#acr

Gastrointestinal Tumor (GIST) on CT ScanAbdomen CT shows a mass with internal cystic/ necrotic changes is seen between the left liver lobe and gastric lesser curvature originating from the stomach wall.Image source: Case courtesy of Mohammad T. Niknejad, Radiopaedia, rID: 97920#radiology #FOAMrad #RadEd #RSNA #ACR

Sigmoid Volvulus: The Coffee bean sign on X rayThe image shows markedly dilated loop of colon with a coffee-bean shape. Its apex points toward the right upper quadrant. Lucency at the right edge of the dilated bowel most likely represent compressed ascending colon.Image source: Case courtesy of Wael Nemattalla, Radiopaedia, rID: 10633#radiology #FOAMrad #RadEd #RSNA #ACR

The Evans IndexA normal Evans index is between 0.20 and 0.25.An index between 0.25 and 0.30 indicates possible or early ventriculomegaly.A ratio of >0.30 indicates definite ventriculomegaly. The ratio can be higher in a normal healthy elderly individual and varies with age and sex.Image source: Case courtesy of Frank Gaillard, Radiopaedia, rID: 165931#Radiology #FOAMrad #RadEd #RSNA #ACR

The Overview of IntussusceptionAn ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound.Doppler ultrasound demonstrates preserved blood flow suggesting presence of viability and can be reduced.Image source: EPOS#Radiology #FOAMrad #RadEd #RSNA #ACR

The Humpton Hump SignWedge-shaped peripheral consolidation noted in the right middle zone suggesting pulmonary embolism.There is blunting of the right costophrenic angle consistent with pleural effusion#Radiology #FOAMrad #RadEd #RSNA #ACR

Split Pleura Sign on CT ScanContrast-enhanced transverse CT scan shows empyema between thickened parietal (arrowheads) and visceral (arrow) pleural layers: the split pleura sign.Image source: RSNA#Radiology #FOAMrad #RadEd #RSNA #ACR

The Coffee bean sign on X rayThe image shows markedly dilated loop of colon with a coffee-bean shape. Its apex points toward the right upper quadrant. Lucency at the right edge of the dilated bowel most likely represent compressed ascending colon.Image source: Case courtesy of Wael Nemattalla, Radiopaedia, rID: 10633#Radiology #FOAMrad #RadEd #RSNA #ACR