WafaaFraih/rocov2-mri-20250831-190356 · Datasets at Hugging Face

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	Head CT demonstrating left parotiditis.
	Computed tomography of the chest showing the right breast nodule with irregular margins
	Thoracic CT scan showing perihilar pulmonary lymphadenomegaly
	5.1 cm x 3.4 cm x 4 cm multiloculated hepatic abscess in the inferior posterior aspect of the right lobe
	Repeat CT abdomen and pelvis showing resolution of collection with no new abscess
	Computed tomography of the head on Day 0 shows mild to moderate hydrocephalus with the presence of a right posterior parietal VP shunt tube that traverses the right lateral ventricle.
	Computed tomography of the head on Day 22 shows dilated left lateral ventricle with parenchymal hemorrhage in the right frontal lobe (black arrows) and intraventricular hemorrhage (white arrow) despite ventriculostomy tubes.
	Preop CT showing left orbital floor fracture
	Postop 22-month CT scan (sagittal): Posteriorly the graft seated in a sound bone
	Enhanced magnetic resonance imaging of head revealed bilateral cerebral and cerebellar hemispheres abnormal meningeal enhancement.
	Enhanced magnetic resonance imaging of spinal cord delineated multiple enhancement nodules in spinal cord, cauda equina, and cristae membrane (arrow).
	Sagittal T2-SPAIR image illustrating the "fluid sign (arrow)" in the acute osteoporotic compression fracture.
	CT demonstrating partially obstructed airway.CT: computed tomography.
	CT demonstrating the minimum diameter of the patient's airway.CT: computed tomography.This CT image demonstrates the minimum luminal airway dimension found which was 8 mm x 3 mm.
	Atrial septal defect.
	Single umbilical artery seen on axial section.
	Abdominopelvic ultrasound scan showed ectopic kidneys at the hemi-pelvis, fused in their upper poles, normal size and texture of the kidneys with normal corticomedullary differentiation, no stones or obstructive changes
	Computed tomography urography. The right kidney is ectopically placed in the pelvis, measures 9.6 cm bipolar length, and is medially and inferiorly faced. The left kidney is also ectopically placed in the pelvis, measures 9.3 cm in bipolar length, is mal-rotated as the pelvis faces upward and laterally, both kidneys are partially fused at their upper poles
	Previous CT scan of abdomen showing two pseudocysts in the pancreatic tail (white arrows).
	New CTA of abdomen showing huge variegated hematoma (yellow arrows) suggesting recent hemorrhage.CTA, CT with angiography
	Chest CT scan revealed fibrosis within the irregular strip located in dorsal anasal segment of lower lobes.
	CT chest showing ground-glass opacities with bilateral minimal pleural effusion.
	Abdominal CT. Abdominal CT shows a mass communicated with the small intestinal lumen (white arrow), and the outer and inner margins of the mass are irregular. A lymph node involvement is observed in the adjacent mesentery (red arrow)
	Abdominal CT. After enhancement, abdominal CT shows a small low-density lesion in the seventh segment of the liver (black arrow)
	Chest CT. Chest CT shows an irregular contours mass in anterior mediastinum with mild heterogenetic enhancement (white arrow)
	A slide from CT abdomen that shows that the patient is very thin with large ascites and very large liver.
	CT of the abdomen showing hepatomegaly
	Carpentier type 3B: restrictive leaflet motion—systole (closure): ischaemic mitral regurgitation.
	Brain MRI Flaire image showing hyperintensities in basal ganglias
	Abdominal computed tomography shows an enterolith (white arrow) measuring 3 cm in the proximal afferent loop.
	Cervical Spine MRISagittal MRI of the cervical spine demonstrated nodular contrast enhancement of the lesion at the cervicomedullary junction.
	Cervical Spine MRI showing rapid enlargement. Sagittal MRI of the cervical spine demonstrated substantial and rapid enlargement of the contrast enhancing lesion at the cervicomedullary junction.
	Radiological image (axial cuts)Axial cut, soft tissue window contrast computed tomography of the neck showing a heterogeneously enhancing lesion of both sides of the supraglottis extending to the right pyriform sinus (lower arrow) invading the thyroid cartilage (upper arrow).
	Chest computed tomography (axial view) with cystic lesion in the pericardium (arrows).
	Computed tomography; Transverse section: 6 cm defect involving the right atrium and the right inferior pulmonary vein, which appears markedly enlarged
	MRI of the patient showed a soft/hard tissue mass (37 mm × 30 mm × 42 mm) in the anterior/posterior compartment of the left lower leg.
	Bone scintigraphy. Increased uptake in bilateral distal tibia, calcaneum, and midfoot bones corresponding to prior MRI findings, are in keeping with infective/inflammatory changes. No suspicious focus of increased radiotracer uptake is seen in the rest of the skeletal system to suggest disease involvement.
	CT imaging of the abdomen revealed a small air collection within the wall of the ileum (red arrow); however, the finding was not clear.
	The small air collection within the wall of the ileum was more clearly defined as a smooth‐layered air collection (red arrow) using the lung window setting.
	CT scan showing lesion in right hemimandible.
	An asymptomatic patient who had underwent two level fusion at C3-C4, and C4-C5. A sagittal section magnetic resonance imaging scan showed minimal indentation at C2-C3, and C6-C7 levels, suggestive of radiological adjacent segment pathology.
	Sagittal section magnetic resonance imaging scan showing indentation at C3-C4 level, suggestive of adjacent segment pathology, in a case featuring three level fusions at C4-C7 and only axial neck pain.
	MRI left hip T1T1 MRI image encircled, showing osteonecrosis in the femoral headband-like lesion.MRI: Magnetic resonance imaging
	“Prone Breast CT Slice.” Slice of prone breast treatment plan, demonstrating an intended reduction in absorbed dose near the breast board/skin interface.
	Ductus arteriosus in TOF-PA arising proximally from the underside of the aortic arch inserting onto the proximal part of the LPA. Significant stenosis of the LPA is present. The tip of a JR catheter passed transvenously into the aorta via the VSD is engaged in the ampulla for adequate visualization
	Fluoroscopic barium study demonstrating oral contrast agent progression through the small bowel at 5 h after ingestion. Dilated bowel loops can be visualized throughout the abdomen, and transit time is delayed. Impression—high-grade distal small bowel obstruction.
	Dilated multiple loops of proximal small bowel with collapsed distal loops of small bowel consistent with small bowel obstruction (case 1).
	Computed tomography. Post-operative 2 years computed tomography at portal phase showing multicentric recurrence of hepatocellular carcinoma in the liver.
	Normal upper abdominal CT scan with intravenous contrast medium. Gastric pouch (long arrow), staple line crossing the gastric body and defunctioning the distal stomach (short arrow). Note the undistended gastric remnant and normal calibre small bowel.
	Upper abdominal CT scan with IV contrast enhancement 10 days post bypass procedure, showing a large irregular abscess containing gas and semi-solid material in the upper abdomen (short arrows). Note the upper margin of the gastric staple line (long arrow). The collection was drained percutaneously but a further laparotomy was required to repair a leak at the gastro-jejunostomy site.
	Upper gastrointestinal contrast study performed several weeks after bypass surgery. The gastric staple line has broken down and contrast enters the defunctioned stomach (arrows). Note the gas filled fundus/gastric pouch (asterix).
	Upper abdominal CT examination in a patient approximately three months after bariatric gastric bypass, performed for upper abdominal pain. There are abnormal liver appearances with multiple small well defined areas of low attenuation (long arrows) together with a larger more confluent area with a typical ‘geographical’ appearance peripherally in the right lobe (short arrows). These changes were due to patchy fatty infiltration.
	CT of the abdomen showing a fatty mass (arrow) at the center of the transplant kidney.
	Axial reformatted CT chest with IV contrast demonstrating a cavitary lesion with internal dependent debris and an air-fluid level in the right upper lobe apical and anterior segment measuring 5.7 × 5.7 × 5.8 cm (yellow arrow).CT: computed tomography; IV: intravenous
	Mycoplasma pneumonia: area of consolidation (lung hepatization) with blurred margins and disappearance of pleural line. Adjacent to the affected area, evidence of normal A-lines, i.e., hyperechoic horizontal lines deeper than visible pleural line, parallel and equidistant from one another that are able to exclude the presence of lung pathologies in the scanned area.
	The CT scan done at the time of presentation. The image shows herniated abdominal viscera with oral contrast in the left hemithorax (black arrow)CT: computed tomography
	The second event of stent thrombosis. Coronary angiogram is showing good distal flow (thrombolysis in myocardial infarction III) after stent implantation in proximal left anterior descending artery with overlapping proximal part of the previous stent (arrow).
	Axial contrast enhanced MRI: extensive JA with a typical pattern of spread into the cancellous bone of the basisphenoid along the vidian canal (white dotted line); on the contralateral side, black arrows indicate the right vidian nerve. Moreover, the lesion spreads deeply into the pterygomaxillary fossa toward the masticatory muscles, with anterior displacement of the posterior maxillary wall (white arrowheads). Asterisks indicate the foramen ovale bilaterally. TM: temporalis muscle; MM: masseter muscle.
	CT chest on presentation.
	MRI image showing the presence of dorsal pancreatic duct (right) and ventral pancreatic duct (left) that drains into the major papilla
	Well-defined solid homogeneous mediastinal mass in chest CT scan of case 1.
	Smooth, semilunar filling defect in upper esophagus of case 1 after barium swallow which shown by arrow.
	Abdominal CT scan. An axial contrast‐enhanced computed tomography (CT) image of the abdomen shows an inhomogeneous, large, nonenhanced hypodense lesion measuring 13.6 × 11.6 × 20 cm, occupying most of the right liver with exophytic components encroaching the upper right suprarenal region and displacing the right kidney inferiorly
	Pretreatment computed tomography revealed a metastatic bone tumor in the ninth thoracic vertebral arch.
	Axial source image from an intracranial magnetic resonance angiogram reveals abnormal arterial signal elevation in the left more than right cavernous sinuses consistent with a carotid cavernous fistula, as indicated by the arrow.
	Frontal view from a left common carotid artery angiogram demonstrates multiple arterial feeders from the left internal carotid artery and external carotid artery to the high flow indirect carotid cavernous fistula (single arrow). There is arterialization of the bilateral cavernous sinuses, circular sinus, and left superior ophthalmic vein (double arrows)."Left" indicates the patient's left side.
	Left common carotid artery angiogram after the initial transvenous embolization reveals a dense coil pack in the medial aspect of the left cavernous sinus with reduced flow across the circular sinus. There is still a prominent arterialized venous pouch laterally (arrow) and arterialization of the left superior ophthalmic vein."Left" indicates the patient's left side.
	Lateral view selective microcatheter venography shows the microcatheter tip placed precisely in the residual arterialized venous pouch (arrow). Coils were placed from this position up to the junction with the superior ophthalmic vein (double arrow) as the microcatheter was slowly withdrawn."Left" indicates the patient's left side.
	Digital subtraction angiography of popliteal artery.
	Digital subtraction angiography of popliteal artery with cystic adventitial disease in focus.
	Postthyroidectomy airway.
	Sagittal view of the lumbar spine MRI showing a cystic lesion in the anterior epidural space with high signal intensity on T2-weighted image.
	Brain CT scan taken after the occurrence of seizure shows minimal intracerebral hematoma and fluid collection (arrow) in the left side.
	Brain CT slice caudal to Fig. 2, bony cleft is visible (arrow).
	Transesophageal echocardiography. The injection of bolus of agitated saline in a forearm vein confirmed a small PFO, with spontaneous shunt. Note the small amount of bubbles (less than 5) in the left atrium.
	Photograph of computed tomography-scan abdomen shows hypoattenuating tumor of the ascending colon (green arrow).
	A transverse view of the CT scan showing a subdiaphragmatic collection (red arrow).CT: Computed tomography.
	A sagittal view of the CT scan showing a subdiaphragmatic collection (red arrows).CT: Computed tomography.
	Simplified schematic drawing of central structures involved in the processing of vestibular and thermal information reaching the insular cortex as multisensory region via the thalamus. Intrainsular connections between vestibular (blue) and somatosensory signals (yellow) might lead to homeostasis and might be the basis for vestibular–somatosensory interaction (red arrow).
	CT chest showing a mediastinal haematoma with active contrast extravasation.
	The atlas was rotated on one articular process with 3-5 mm anterior displacement, compatible with type II subluxation in patient's computed tomography
	Axial CT image of the brain without contrast was unremarkable.
	MRI of lateral position taken preoperatively showed a stable retrolisthesis of lumbar 3 after a previous internal fixation. Patient was a male, 50 years old. Arrow pointed the L3 retrolisthesis. MRI = magnetic resonance imaging.
	Cardiac MRI first-pass perfusion imaging showing mass originating on the atrial septum and extending along the atrial aspect of the anterior mitral valve leaflet.
	Coronary artery disease in a left breast cancer patient without cardiovascular risk factors treated with chemotherapy and radiotherapy. A long lesion with severe stenosis in the mid-distal portion of the circumflex artery (orange arrow). The left anterior descending artery (yellow arrows) also has a diffuse disease and severe stenosis (95%) in the mid-distal segment. Image courtesy of Dr. Andrés Daniele. “Ángel Roffo” Oncology Institute Buenos Aires, Argentina.
	Figure 1: Contrast study showing right sided stomach and duodenal obstruction.
	A follow-up enhanced CT scan after embolization two weeks later shows a large post-hemorrhagic pseudocyst formation (arrow).
	A follow-up enhanced CT scan after embolization performed 16 weeks later shows a decrease in size of the post-hemorrhagic pseudocyst as well as gradual atrophy of the right lobe of the liver (arrow).
	Irregular lobulated mass in anterior segment of left upper lobe, peripheral floccule inflammation, djacent pleural thickening adhesion, local traction
	Enhanced CT.Notes: This enhanced CT shows a 13 cm right renal tumor that invades the pancreas (arrows), duodenum (arrowheads), and inferior vena cava (asterisk). The second part of the duodenum shows stenosis because of the protruding right renal tumor.Abbreviation: CT, computed tomography.
	Enhanced CT at 5 weeks after starting treatment with axitinib.Notes: Tumor degeneration is observed (black triangle). The lumen of the second part of the duodenum (arrowheads) is wider, due to tumor shrinkage compared with the pretreatment state. Three arrows show the head of the pancreas, and the asterisk shows inferior vena cava.Abbreviation: CT, computed tomography.
	In the case 1, multiple bone metastases were suspected by a positron emission tomography-computed tomography in the pelvic bone (SUVmax = 2.94).
	Case 3 was suspected of right recurrent nerve lymph node metastasis by preoperative positron emission tomography-computed tomography (SUVmax = 3.00).
	Preoperative magnetic resonance imaging with enhancement. Coronal view of a T2-weighted fat-suppressed image.
	Axial CT scan showed a huge left sacral expansive lesions with marginal sclerosis(S1-2)
	Still frame image of the RCA in the right anterior oblique (RAO) projection. The RCA is seen arising from the left coronary cusp prior to taking a usual course through the atrioventricular groove.
	Magnetic resonance cholangiopancreatography (MRCP).The cystic duct and common bile duct are markedly distended with a smooth and short narrowing (solid arrow) at the distal aspect. No biliary stone is identified. The main pancreatic duct (dotted arrow) is not involved. Along the distal common duct, there is an area of ill-defined increased T2-weighted signal. The adjacent duodenal wall (*) shows prominently increased T2-weighted signal that reflects oedema which can be reactive to an infiltrative disease.
	Computed tomography (CT) of the chest confirms a large right pleural effusion with collapse of the middle and lower lobe.The bulging nodular hypoenhancing mass (*) in the right lower lobe is suspicious for primary bronchogenic malignancy.
	Whole-body positron emission tomography with fluorine-18 fluorodeoxyglucose (FDG). Intense FDG uptake in the ascending colon and mild focal metabolic activity in the left internal jugular region and diffuse increased FDG activity related to splenic lesions associated with splenomegaly.
	Computed tomography scan of the thorax showing a large lobulated mass in the right upper lobe, measuring 3.3×1.6 cm.

Head CT demonstrating left parotiditis.

Computed tomography of the chest showing the right breast nodule with irregular margins

Thoracic CT scan showing perihilar pulmonary lymphadenomegaly

5.1 cm x 3.4 cm x 4 cm multiloculated hepatic abscess in the inferior posterior aspect of the right lobe

Repeat CT abdomen and pelvis showing resolution of collection with no new abscess

Computed tomography of the head on Day 0 shows mild to moderate hydrocephalus with the presence of a right posterior parietal VP shunt tube that traverses the right lateral ventricle.

Computed tomography of the head on Day 22 shows dilated left lateral ventricle with parenchymal hemorrhage in the right frontal lobe (black arrows) and intraventricular hemorrhage (white arrow) despite ventriculostomy tubes.

Preop CT showing left orbital floor fracture

Postop 22-month CT scan (sagittal): Posteriorly the graft seated in a sound bone

Enhanced magnetic resonance imaging of head revealed bilateral cerebral and cerebellar hemispheres abnormal meningeal enhancement.

Enhanced magnetic resonance imaging of spinal cord delineated multiple enhancement nodules in spinal cord, cauda equina, and cristae membrane (arrow).

Sagittal T2-SPAIR image illustrating the "fluid sign (arrow)" in the acute osteoporotic compression fracture.

CT demonstrating partially obstructed airway.CT: computed tomography.

CT demonstrating the minimum diameter of the patient's airway.CT: computed tomography.This CT image demonstrates the minimum luminal airway dimension found which was 8 mm x 3 mm.

Atrial septal defect.

Single umbilical artery seen on axial section.

Abdominopelvic ultrasound scan showed ectopic kidneys at the hemi-pelvis, fused in their upper poles, normal size and texture of the kidneys with normal corticomedullary differentiation, no stones or obstructive changes

Computed tomography urography. The right kidney is ectopically placed in the pelvis, measures 9.6 cm bipolar length, and is medially and inferiorly faced. The left kidney is also ectopically placed in the pelvis, measures 9.3 cm in bipolar length, is mal-rotated as the pelvis faces upward and laterally, both kidneys are partially fused at their upper poles

Previous CT scan of abdomen showing two pseudocysts in the pancreatic tail (white arrows).

New CTA of abdomen showing huge variegated hematoma (yellow arrows) suggesting recent hemorrhage.CTA, CT with angiography

Chest CT scan revealed fibrosis within the irregular strip located in dorsal anasal segment of lower lobes.

CT chest showing ground-glass opacities with bilateral minimal pleural effusion.

Abdominal CT. Abdominal CT shows a mass communicated with the small intestinal lumen (white arrow), and the outer and inner margins of the mass are irregular. A lymph node involvement is observed in the adjacent mesentery (red arrow)

Abdominal CT. After enhancement, abdominal CT shows a small low-density lesion in the seventh segment of the liver (black arrow)

Chest CT. Chest CT shows an irregular contours mass in anterior mediastinum with mild heterogenetic enhancement (white arrow)

A slide from CT abdomen that shows that the patient is very thin with large ascites and very large liver.

CT of the abdomen showing hepatomegaly

Carpentier type 3B: restrictive leaflet motion—systole (closure): ischaemic mitral regurgitation.

Brain MRI Flaire image showing hyperintensities in basal ganglias

Abdominal computed tomography shows an enterolith (white arrow) measuring 3 cm in the proximal afferent loop.

Cervical Spine MRISagittal MRI of the cervical spine demonstrated nodular contrast enhancement of the lesion at the cervicomedullary junction.

Cervical Spine MRI showing rapid enlargement. Sagittal MRI of the cervical spine demonstrated substantial and rapid enlargement of the contrast enhancing lesion at the cervicomedullary junction.

Radiological image (axial cuts)Axial cut, soft tissue window contrast computed tomography of the neck showing a heterogeneously enhancing lesion of both sides of the supraglottis extending to the right pyriform sinus (lower arrow) invading the thyroid cartilage (upper arrow).

Chest computed tomography (axial view) with cystic lesion in the pericardium (arrows).

Computed tomography; Transverse section: 6 cm defect involving the right atrium and the right inferior pulmonary vein, which appears markedly enlarged

MRI of the patient showed a soft/hard tissue mass (37 mm × 30 mm × 42 mm) in the anterior/posterior compartment of the left lower leg.

Bone scintigraphy. Increased uptake in bilateral distal tibia, calcaneum, and midfoot bones corresponding to prior MRI findings, are in keeping with infective/inflammatory changes. No suspicious focus of increased radiotracer uptake is seen in the rest of the skeletal system to suggest disease involvement.

CT imaging of the abdomen revealed a small air collection within the wall of the ileum (red arrow); however, the finding was not clear.

The small air collection within the wall of the ileum was more clearly defined as a smooth‐layered air collection (red arrow) using the lung window setting.

CT scan showing lesion in right hemimandible.

An asymptomatic patient who had underwent two level fusion at C3-C4, and C4-C5. A sagittal section magnetic resonance imaging scan showed minimal indentation at C2-C3, and C6-C7 levels, suggestive of radiological adjacent segment pathology.

Sagittal section magnetic resonance imaging scan showing indentation at C3-C4 level, suggestive of adjacent segment pathology, in a case featuring three level fusions at C4-C7 and only axial neck pain.

MRI left hip T1T1 MRI image encircled, showing osteonecrosis in the femoral headband-like lesion.MRI: Magnetic resonance imaging

“Prone Breast CT Slice.” Slice of prone breast treatment plan, demonstrating an intended reduction in absorbed dose near the breast board/skin interface.

Ductus arteriosus in TOF-PA arising proximally from the underside of the aortic arch inserting onto the proximal part of the LPA. Significant stenosis of the LPA is present. The tip of a JR catheter passed transvenously into the aorta via the VSD is engaged in the ampulla for adequate visualization

Fluoroscopic barium study demonstrating oral contrast agent progression through the small bowel at 5 h after ingestion. Dilated bowel loops can be visualized throughout the abdomen, and transit time is delayed. Impression—high-grade distal small bowel obstruction.

Dilated multiple loops of proximal small bowel with collapsed distal loops of small bowel consistent with small bowel obstruction (case 1).

Computed tomography. Post-operative 2 years computed tomography at portal phase showing multicentric recurrence of hepatocellular carcinoma in the liver.

Normal upper abdominal CT scan with intravenous contrast medium. Gastric pouch (long arrow), staple line crossing the gastric body and defunctioning the distal stomach (short arrow). Note the undistended gastric remnant and normal calibre small bowel.

Upper abdominal CT scan with IV contrast enhancement 10 days post bypass procedure, showing a large irregular abscess containing gas and semi-solid material in the upper abdomen (short arrows). Note the upper margin of the gastric staple line (long arrow). The collection was drained percutaneously but a further laparotomy was required to repair a leak at the gastro-jejunostomy site.

Upper gastrointestinal contrast study performed several weeks after bypass surgery. The gastric staple line has broken down and contrast enters the defunctioned stomach (arrows). Note the gas filled fundus/gastric pouch (asterix).

Upper abdominal CT examination in a patient approximately three months after bariatric gastric bypass, performed for upper abdominal pain. There are abnormal liver appearances with multiple small well defined areas of low attenuation (long arrows) together with a larger more confluent area with a typical ‘geographical’ appearance peripherally in the right lobe (short arrows). These changes were due to patchy fatty infiltration.

CT of the abdomen showing a fatty mass (arrow) at the center of the transplant kidney.

Axial reformatted CT chest with IV contrast demonstrating a cavitary lesion with internal dependent debris and an air-fluid level in the right upper lobe apical and anterior segment measuring 5.7 × 5.7 × 5.8 cm (yellow arrow).CT: computed tomography; IV: intravenous

Mycoplasma pneumonia: area of consolidation (lung hepatization) with blurred margins and disappearance of pleural line. Adjacent to the affected area, evidence of normal A-lines, i.e., hyperechoic horizontal lines deeper than visible pleural line, parallel and equidistant from one another that are able to exclude the presence of lung pathologies in the scanned area.

The CT scan done at the time of presentation. The image shows herniated abdominal viscera with oral contrast in the left hemithorax (black arrow)CT: computed tomography

The second event of stent thrombosis. Coronary angiogram is showing good distal flow (thrombolysis in myocardial infarction III) after stent implantation in proximal left anterior descending artery with overlapping proximal part of the previous stent (arrow).

Axial contrast enhanced MRI: extensive JA with a typical pattern of spread into the cancellous bone of the basisphenoid along the vidian canal (white dotted line); on the contralateral side, black arrows indicate the right vidian nerve. Moreover, the lesion spreads deeply into the pterygomaxillary fossa toward the masticatory muscles, with anterior displacement of the posterior maxillary wall (white arrowheads). Asterisks indicate the foramen ovale bilaterally. TM: temporalis muscle; MM: masseter muscle.

CT chest on presentation.

MRI image showing the presence of dorsal pancreatic duct (right) and ventral pancreatic duct (left) that drains into the major papilla

Well-defined solid homogeneous mediastinal mass in chest CT scan of case 1.

Smooth, semilunar filling defect in upper esophagus of case 1 after barium swallow which shown by arrow.

Abdominal CT scan. An axial contrast‐enhanced computed tomography (CT) image of the abdomen shows an inhomogeneous, large, nonenhanced hypodense lesion measuring 13.6 × 11.6 × 20 cm, occupying most of the right liver with exophytic components encroaching the upper right suprarenal region and displacing the right kidney inferiorly

Pretreatment computed tomography revealed a metastatic bone tumor in the ninth thoracic vertebral arch.

Axial source image from an intracranial magnetic resonance angiogram reveals abnormal arterial signal elevation in the left more than right cavernous sinuses consistent with a carotid cavernous fistula, as indicated by the arrow.

Frontal view from a left common carotid artery angiogram demonstrates multiple arterial feeders from the left internal carotid artery and external carotid artery to the high flow indirect carotid cavernous fistula (single arrow). There is arterialization of the bilateral cavernous sinuses, circular sinus, and left superior ophthalmic vein (double arrows)."Left" indicates the patient's left side.

Left common carotid artery angiogram after the initial transvenous embolization reveals a dense coil pack in the medial aspect of the left cavernous sinus with reduced flow across the circular sinus. There is still a prominent arterialized venous pouch laterally (arrow) and arterialization of the left superior ophthalmic vein."Left" indicates the patient's left side.

Lateral view selective microcatheter venography shows the microcatheter tip placed precisely in the residual arterialized venous pouch (arrow). Coils were placed from this position up to the junction with the superior ophthalmic vein (double arrow) as the microcatheter was slowly withdrawn."Left" indicates the patient's left side.

Digital subtraction angiography of popliteal artery.

Digital subtraction angiography of popliteal artery with cystic adventitial disease in focus.

Postthyroidectomy airway.

Sagittal view of the lumbar spine MRI showing a cystic lesion in the anterior epidural space with high signal intensity on T2-weighted image.

Brain CT scan taken after the occurrence of seizure shows minimal intracerebral hematoma and fluid collection (arrow) in the left side.

Brain CT slice caudal to Fig. 2, bony cleft is visible (arrow).

Transesophageal echocardiography. The injection of bolus of agitated saline in a forearm vein confirmed a small PFO, with spontaneous shunt. Note the small amount of bubbles (less than 5) in the left atrium.

Photograph of computed tomography-scan abdomen shows hypoattenuating tumor of the ascending colon (green arrow).

A transverse view of the CT scan showing a subdiaphragmatic collection (red arrow).CT: Computed tomography.

A sagittal view of the CT scan showing a subdiaphragmatic collection (red arrows).CT: Computed tomography.

Simplified schematic drawing of central structures involved in the processing of vestibular and thermal information reaching the insular cortex as multisensory region via the thalamus. Intrainsular connections between vestibular (blue) and somatosensory signals (yellow) might lead to homeostasis and might be the basis for vestibular–somatosensory interaction (red arrow).

CT chest showing a mediastinal haematoma with active contrast extravasation.

The atlas was rotated on one articular process with 3-5 mm anterior displacement, compatible with type II subluxation in patient's computed tomography

Axial CT image of the brain without contrast was unremarkable.

MRI of lateral position taken preoperatively showed a stable retrolisthesis of lumbar 3 after a previous internal fixation. Patient was a male, 50 years old. Arrow pointed the L3 retrolisthesis. MRI = magnetic resonance imaging.

Cardiac MRI first-pass perfusion imaging showing mass originating on the atrial septum and extending along the atrial aspect of the anterior mitral valve leaflet.

Coronary artery disease in a left breast cancer patient without cardiovascular risk factors treated with chemotherapy and radiotherapy. A long lesion with severe stenosis in the mid-distal portion of the circumflex artery (orange arrow). The left anterior descending artery (yellow arrows) also has a diffuse disease and severe stenosis (95%) in the mid-distal segment. Image courtesy of Dr. Andrés Daniele. “Ángel Roffo” Oncology Institute Buenos Aires, Argentina.

Figure 1: Contrast study showing right sided stomach and duodenal obstruction.

A follow-up enhanced CT scan after embolization two weeks later shows a large post-hemorrhagic pseudocyst formation (arrow).

A follow-up enhanced CT scan after embolization performed 16 weeks later shows a decrease in size of the post-hemorrhagic pseudocyst as well as gradual atrophy of the right lobe of the liver (arrow).

Irregular lobulated mass in anterior segment of left upper lobe, peripheral floccule inflammation, djacent pleural thickening adhesion, local traction

Enhanced CT.Notes: This enhanced CT shows a 13 cm right renal tumor that invades the pancreas (arrows), duodenum (arrowheads), and inferior vena cava (asterisk). The second part of the duodenum shows stenosis because of the protruding right renal tumor.Abbreviation: CT, computed tomography.

Enhanced CT at 5 weeks after starting treatment with axitinib.Notes: Tumor degeneration is observed (black triangle). The lumen of the second part of the duodenum (arrowheads) is wider, due to tumor shrinkage compared with the pretreatment state. Three arrows show the head of the pancreas, and the asterisk shows inferior vena cava.Abbreviation: CT, computed tomography.

In the case 1, multiple bone metastases were suspected by a positron emission tomography-computed tomography in the pelvic bone (SUVmax = 2.94).

Case 3 was suspected of right recurrent nerve lymph node metastasis by preoperative positron emission tomography-computed tomography (SUVmax = 3.00).

Preoperative magnetic resonance imaging with enhancement. Coronal view of a T2-weighted fat-suppressed image.

Axial CT scan showed a huge left sacral expansive lesions with marginal sclerosis(S1-2)

Still frame image of the RCA in the right anterior oblique (RAO) projection. The RCA is seen arising from the left coronary cusp prior to taking a usual course through the atrioventricular groove.

Magnetic resonance cholangiopancreatography (MRCP).The cystic duct and common bile duct are markedly distended with a smooth and short narrowing (solid arrow) at the distal aspect. No biliary stone is identified. The main pancreatic duct (dotted arrow) is not involved. Along the distal common duct, there is an area of ill-defined increased T2-weighted signal. The adjacent duodenal wall (*) shows prominently increased T2-weighted signal that reflects oedema which can be reactive to an infiltrative disease.

Computed tomography (CT) of the chest confirms a large right pleural effusion with collapse of the middle and lower lobe.The bulging nodular hypoenhancing mass (*) in the right lower lobe is suspicious for primary bronchogenic malignancy.

Whole-body positron emission tomography with fluorine-18 fluorodeoxyglucose (FDG). Intense FDG uptake in the ascending colon and mild focal metabolic activity in the left internal jugular region and diffuse increased FDG activity related to splenic lesions associated with splenomegaly.

Computed tomography scan of the thorax showing a large lobulated mass in the right upper lobe, measuring 3.3×1.6 cm.

Datasets:

WafaaFraih
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rocov2-mri-20250831-190356

ROCOv2 - MRI

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