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train/ROCOv2_2023_train_000602.jpg
Control of chest-x-ray after cast rejection revealed complete left lung aeration.
train/ROCOv2_2023_train_000603.jpg
Preoperative horizontal MRI scan indicating the location (white arrow) of the adenocarcinoma of the right palatomaxillary region. [L]: left side; [R]: right side; [A]: anterior aspect; [P]: posterior aspect.
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Contrast-enhanced computed tomography image showing a 3-cm mass on the left lateral side of the urinary bladder. Perivesical invasion was not seen.
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Aneurysms visualized by echocardiography. Echocardiographic parasternal short axis view reveals two fusiform aneurysms of the left anterior descending coronary artery. The proximal aneurysm (A1) measures 8.7 mm, and the distal (A2) measures 9.0 mm. The aorta (Ao) and main pulmonary artery (PA) are seen in cross section...
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Embolization of the caudal pole of the left kidney. Perfusion of blood vessels in the cranial pole of the left kidney is visualized using contrast angiography.
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Figure 1:CT scan of chest showing obstruction of left main bronchus with resultant collapse of left lung and mediastinal shift.
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Scoliosis located at lumbar segment. The arrow indicates the scoliosis.
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A dorsal plane post‐contrast CT of the RPL is shown. The musculature distal to and surrounding the stifle are swollen with a marked lack of contrast enhancement (*), suggestive of limb ischemia. There is contrast attenuation noted within the proximal femoral artery demarcated by “<” suggestive of thrombosis
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Computed tomography scan of the neck: The arrow indicates a soft tissue between the trachea and innominate artery.
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Zones of superior mesenteric artery: angiographic view was excluded
train/ROCOv2_2023_train_000613.jpg
Portable cardiac ultrasound from a 54-year-old male with syncope and hypotension, obtained during early systole. LV = left ventricle, RV = right ventricle, LA = left atrium. Echo-free space (effusion) 37 mm (vertical dashed line).
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MRI liver showing a central large heterogenous mass inseparable and encasing the main portal vein and biliary ductal confluence suggestive of cholangiocarcinoma
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The transthoracic echocardiogram revealed an aneurysmatic left sinus of Valsalva, with a remarkable turbulent flow moving from the proximal aortic root to the right outflow tract.
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MRI of the right hand, T1 weighted image showing a well-defined multilobulated mass.
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Left axillary mass at presentation.
train/ROCOv2_2023_train_000618.jpg
Preoperative MRI T2 image.A coronal MRI image shows bone marrow edema surrounding the right physis (arrow), but there were no findings suggesting pre-slip on the left (arrow of the thick dotted line).
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Chest radiograph showing a right pneumothorax.
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Chest radiograph showing a recurrent right pneumothorax.
train/ROCOv2_2023_train_000621.jpg
Transvaginal ultrasound showing endometrial foci on rectovaginal septum.
train/ROCOv2_2023_train_000622.jpg
The abdominal precontrast CT scan. This scan revealed a mass that was measured about 3 cm at the hilum of the right kidney (arrow). CT = computed tomography.
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The abdominal postcontrast enhanced CT scan. This scan revealed no obvious enhancement of the mass, but showed a clear demarcation of the tumor from its surrounding normal tissues and a regular shape of the tumor (arrow). CT = computed tomography.
train/ROCOv2_2023_train_000624.jpg
X-ray showing destruction and amputation of fingers in a child suffering from congenital insensitivity to pain with anhydrosis
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Preoperative coronal computed tomography image. A pure ground-glass opacity nodule (white arrow) is located in the right apical segment that is supplied by a tracheal bronchus.
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Axial CT slice at the level of the tracheal bronchus demonstrating the locations of A1a + b, V1a, and V2a + b.
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Initial gated non-cardiac computed tomographic angiogram. A gated non-cardiac axial contrast-enhanced computed tomographic scan of the sinuses of Valsalva is shown. Aortic motion artefact blurs the aortic wall anteriorly and posteriorly (arrowheads). This is the plane of aortic translocation during the cardiac cycle. T...
train/ROCOv2_2023_train_000628.jpg
Transesophageal echocardiogram. Transesophageal echocardiographic scan of the aortic root showing the open leaflets of the aortic valve (arrowheads) and the dissection flap just above the valve and within the sinuses of Valsalva (arrows).
train/ROCOv2_2023_train_000629.jpg
A giant synovial cyst incidentally found in the right hip of a 67-year-old woman during a routine computed tomography scan in the follow-up of a colorectal cancer in complete remission. For better characterization of the lesion, MRI was performed. Sagittal PD-WI shows a smooth, large multiloculated cyst, communicating ...
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Heterogeneous popliteal cyst in an 89-year-old woman with known total knee arthroplasty presenting with a palpable mass. Sagittal T2-weighted MRI shows a few septa and hypointense internal debris in an otherwise common Baker’s cyst. Despite the severity of artifact due to metallic hardware, it is still possible to appr...
train/ROCOv2_2023_train_000631.jpg
Anterior cruciate ligament ganglion cyst incidentally found in a 58-year-old woman during an MRI scan performed in the setting of a knee sprain. Sagittal FS PD-WI shows an enlarged anterior cruciate ligament due to a multiloculated cystic lesion (arrows) embedded within its fibers. ACL, anterior cruciate ligament
train/ROCOv2_2023_train_000632.jpg
Intraosseous ganglion cyst of the tibia incidentally depicted in a 40-year-old man who underwent an MRI scan due to intermittent, subacute non-specific knee pain. Sagittal FS PD-WI shows a metaepiphyseal, large, multiloculated cystic lesion of the tibia, which communicates with the articular surface through a thin stal...
train/ROCOv2_2023_train_000633.jpg
Posteroanterior radiographic view of the wrist at the time of initial evaluation that shows no abnormality in the scaphoid.
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A lateral view of the wrist at the time of initial evaluation without radiographic abnormality of the scaphoid.
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A scaphoid view obtained 6 weeks after presentation without radiographic evidence of a scaphoid waist fracture.
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An oblique radiographic view obtained 6 weeks after presentation with no radiographic abnormality of the scaphoid.
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A lateral radiographic view obtained at 6 weeks after initial presentation showing a normal appearing scaphoid.
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A large cardiac myxoma (60 × 35 mm in diameter) with a stem attached to the septum of the atrial wall, which prolapsed into the left ventricle during the diastolic phase.
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Post-operative MRI showed a large cerebral haemorrhagic infarction in the right occipital lobe.
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CT-scan of the chest showing a well-circumscribed mass in the right lung basis (arrow).
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CMR cine run in the sagittal plane reconfirms the thick-walled parachute mass (arrows) tethered to the tip of AML and LA inferoposterior region. Systolic flow into the mass and significant MR are also evident. LA: left atrium, LV: left ventricle, AML: anterior mitral leaflet, and MR: mitral regurgitation.
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CMR transverse plane image of the LA mass showing its circular shape in cross-section. LA: left atrium; RA: right atrium.
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MRI screening of brain showing single focal well-circumscribed hyperintense lesion (arrow) in T2 sequence at right subcortical frontal region (at gray white interface).
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Angiographic image demonstrating hypervascular tumor.
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Planar Tc-99m MAA scan demonstrating high LSF (76%).
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Lateral view of the cervical radiograph showing atlantoaxial subluxation in the flexion position.
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Computed tomography (CT) chest axial plane showing diffuse randomly distributed ground-glass nodules (blue arrows) involving bilateral lungs consistent with military tuberculosis. Implantable cardioverter defibrillator leads seen (yellow arrows)
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Transesophageal echocardiogram at mid esophageal level showing mass in the right atrium attached to the lead
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X-ray chest showing anterior mediastinal mass
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Computed tomography thorax showing inhomogeneously enhancing mass lesion involving the entire right hemithorax
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In contrast to the clinical picture, this Axial CT scan image, performed during an inadvertent Valsalva manoeuvre, shows only minimal left enophthalmos (highlighted by the broken lines).
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T1 weighted MRI scan showing right sided herniation of brain contents through the orbital bony structural abnormality with proptosis of the globe.
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Abdominal CT scan showing an infrarenal atheroscleroting aortic aneurysm of 38 mm with periaortitis.
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CT brain without contrast revealing colpocephaly (arrow) and absence of the corpus callosum.
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Preoperative magnetic resonance imaging study demonstrates the lesion to be a large, lobulated, pedunculated, heterogeneous focal mass without galea aponeurotica involvement.
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Magnetic resonance imaging of the head and neck region. Sagittal magnetic resonance image (T1-TSE) after contrast showing a pediculated 6.6 x 17.4 x 10 mm muscle-isointense lesion with a moderate uptake of contrast agent at the level of the second and third cervical vertebrae
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Computed tomography showing small focal lesion (arrow) originally suspected to be a neoplastic lesion
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Fluoroscopic study of 5-cm narrowing at the small intestine.
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Chest x-ray on the day of admission showed mild bilateral patchy airspace opacities, nonspecific but compatible with a reported history of coronavirus disease 2019 (COVID-19) infection (red arrows)
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Sagittal MRI T1 fat suppression protocol with contrast, performed on admission (pre-operatively)
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Sagittal MRI T1 fat suppression protocol with contrast performed 1 month after surgical drainage and antibiotic therapy
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Probable overdiagnosis. An 80 year old woman, former smoker, with a history of a left upper lobectomy for a stage I adenocarcinoma, has an 11 mm (arrow) ground glass opacity in the right upper lobe. The nodule has not changed in over 3-years and is currently being followed with annual CT. If this is a cancer it is like...
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Computed tomographic scan shows a metastatic liver tumour (arrow)
train/ROCOv2_2023_train_000664.jpg
Right phthisical eye.
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Lobulated soft tissue mass covering the anterior segment of left eye.
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Figure 1: double bubble sign
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Two-dimensional echocardiogram in our patient demonstrating prominent trabeculations and deep intratrabecular recesses (marked by arrows).
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Color doppler echocardiogram demonstrating blood flow in the deep intertrabecular space (white arrow). Also, blue marking on the left ventricular wall showing noncompacted layer measuring 9.6 mm and yellow marking showing compacted layer measuring 4.4 mm with resulting ratio of noncompacted to compacted layer >2 at the...
train/ROCOv2_2023_train_000669.jpg
Apical four-chamber view of echocardiography demonstrating the end diastolic ratio of noncompacted layer 18.7 mm (yellow marking) and compacted layer 7.2 mm (blue marking) with resultant ratio of >2.
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Ultrasonography (USG) image showing the internal bumper (white arrow) seen within the rectus abdominis muscle (thin black arrow). Thick black arrow showing the gastric wall, and yellow arrow showing the tract through which the internal bumper had migrated.
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Magnetic resonance cholangiopancreatography shows typical filling defects in the distal common bile duct due to compression of the extrinsic cavernomatous transformation (white arrow).
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Initial CTAP showing LLL mass-like consolidation measuring 4.1 x 3 cm. CTAP: computed tomography of the abdomen and pelvis; LLL: left lower lung; cm: centimeter
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PET/CT showing fluorodeoxyglucose (FDG) avid 4.5 x 4.2 x 3.6 cm LLL mass (red arrow) with max standardized uptake value (SUV) of 12 and FDG avid intramedullary metastasis in the lateral right 7th rib. PET/CT: positive emission tomography/computed tomography; FDG: fluorodeoxyglucose; LLL: left lower lung; SUV: standardi...
train/ROCOv2_2023_train_000674.jpg
PET/CT showing focal uptake of FDG by a 1.8 cm round and hypodense lesion (red arrow) in the body-tail of the pancreas (max SUV of 11)PET/CT: positive emission tomography/computed tomography; FDG: fluorodeoxyglucose; cm: centimeter; SUV: standardized uptake value 
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PET/CT showing FDG avid 1.2 x 3.8 x 2.1 cm mediastinal LN station 7 (red arrow) metastatic atypical carcinoid (max SUV of 12.7) and a hypermetabolic left breast mass (blue arrow) with a maximum SUV of 13PET/CT: positive emission tomography/computed tomography; FDG: fluorodeoxyglucose; cm: centimeter; LN: lymph node; SU...
train/ROCOv2_2023_train_000676.jpg
PET/CT showing FDG avid 2.9 x 1.8 x 1.8 cm hilar LN at station 11L-12L (red arrow) metastatic atypical carcinoid (max SUV 12.6)PET/CT: positive emission tomography/computed tomography; FDG: fluorodeoxyglucose; cm: centimeter; LN: lymph node; SUV: standardized uptake value
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MRI brain sagittal view with numerous contrast-enhancing lesions (white arrows) within cerebral hemisphere measuring between 2-14 mm, the largest lesion being 12 x 13 x 14 mm within the superior left frontal lobe with mild surrounding vasogenic edema (red circle)MRI: magnetic resonance imaging; mm: millimeter
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Lateral X-ray of a foot. Lateral X-ray of the foot shows destruction of the talonavicular joint with narrowing of the joint space.
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The fixation of arthrodesis by two memory staples on X-ray. Radiograph shows the healed arthrodesis three years after the procedure.
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Integrated [11C]choline PET/CT shows a single LNM in the right iliac region. The LNM was confirmed histopathologically after secondary resection. (Source: Clinic of Nuclear Medicine and Institute of Clinical Radiology, University Hospital Muenster, Germany).
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The resected regions in mandible and maxilla. AR/ AL: from the mandibular symphysis to the mental foramen; BR/ BL: from the mental foramen to the anterior of ramus; CR/ CL: the mandibular ramus. DR/ DL: from the incisive foramen to the medial wall of maxillary sinus; ER/ EL: the residual alveolar bone.
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Paranasal sinuses computed tomography demonstrated bilateral otomastoiditis with interval development of severe left maxillary sinus mucosal disease.
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Computed tomography of the lungs showing micronodules
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Brain and orbit computed tomography scan showing no abnormality in the orbital regions
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Anteroposterior left ACJ radiograph demonstrating Rockwood V ACJ dislocation.
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Anteroposterior left ACJ radiograph at three months after LARS July 2016 implantation demonstrating relapse of ACJ dislocation and heterotopic ossification medial to the medial clavicular screw.
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Anteroposterior left ACJ radiograph two months after re-do LARS implantation showing anatomically reduced ACJ.
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Cardiac magnetic resonance. Cardiac magnetic resonance showing an area of increased signal intensity compatible with myocardial fatty substitution.
train/ROCOv2_2023_train_000689.jpg
Cardiac magnetic resonance. Cardiac magnetic resonance showing right ventricle dilatation with increased wall thinning.
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Celiac angiogram. The celiac angiogram shows a pseudoaneurysm (arrow) of the proper hepatic artery located next to the origin of the gastroduodenal artery, which is occluded by the chemotherapy infusion catheter (arrowheads). The right hepatic artery is missing after hemihepatectomy.
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Completion celiac angiogram. In the completion celiac angiogram the common hepatic artery is occluded by the microcoils (arrows). The liver is supplied uniquely by the patent portal vein.
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Contrast-enhanced abdominal CT. The left liver lobe is hypertrophied after extended right hemihepatectomy. There is an arterial pseudoaneurysm (arrow) close to the hepato-enteric anastomosis. A hypervascular metastasis is depicted on the same cut (arrowheads).
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Celiac angiogram. Celiac angiogram with pseudoaneurysm of a left segmental artery (arrow) and disseminated metastases (arrowheads).
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Completion hepatic arteriogram. Coils in the segmental artery III (arrowheads) after embolisation. Due to hepatic redistribution the embolized segmental artery is opacified distally to the coils. A hepatic chemotherapy infusion catheter had been inserted into the gastroduodenal artery (arrow).
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Preoperative magnetic resonance imaging of L1 and S1–S2 reveals bone destruction and vertebral abnormalities. Red arrows indicate L1 (upper arrow) and S1-S2 (lower arrow) lesions in MRI
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US image, with the projection of the needle position, and the local anesthetic spread between the RA muscle and posterior leaflet of RAS. EO: external oblique muscle; IO: internal oblique muscle; TA: transverse abdominis muscle.
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ASIS (anterior superior iliac spine) laterally, and muscles of the abdominal wall medially.
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US image, with the projection needle, with the tip located in the plane between the IO and TA muscles. ASIS: anterior superior iliac spine.
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US image with needle position projection. The tip is located deeper than the TA muscle, laterally to the lateral border of the QL muscle.
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US image, with needle projection. Its tip is located on the posterior-lateral border of the TA muscle, posterior to the QL muscle.
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Coronal contrast enhanced CT image shows multiple abdominal hypodense lesions within liver (orange arrowhead) and lesser omentum (blue arrowhead) and peritoneum and above the bladder (green arrowhead).
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Axial contrast enhanced CT image nicely shows the hypodense lesions with water density and multiple smaller cysts at the periphery of the larger cysts (daughter cysts, arrowheads).