Lecture 20: GI Radiology Flashcards
What is the search strategy for image interpretation of the abdomen?
- Solid organs: Liver, spleen, pancreas, adrenal glands, and kidney
- Gallbladder/biliary system
- Lymph node chains: hepatogastric lig, periportal region, mesentery
- Stomach, duodenum, rest of small bowel, colon
- Fat planes, abdominal wall, bones
In a T1-weighted vs T2-weighted MRI, how does fluid show up?
T1: fluid is dark
T2: fluid is bright (best for fluid)
Which structures on CT will show up best at level of T11?
Spleen, stomach, liver, aorta, IVC, inferior aspects of lung well defined
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/144/a_image_thumb.png?1515874299)
Which structures on CT will show up best at level of T12?
- Pancreas, spleen, kidney (particularly left)
- Gallbladder, portal triad
- Bifurcation of celiac trunk, possibly SMA, left renal vein, aorta, IVC
- View of small bowel, stomach
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/149/a_image_thumb.png?1515874418)
Identify this structure; seen best at what level?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/150/q_image_thumb.png?1515874498)
Gastric fundus (stomach)
*Seen best at T11
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/150/a_image_thumb.png?1515874589)
Identify this structure; seen best at what level?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/151/q_image_thumb.png?1515874577)
- Gallbladder
- Seen best at T12
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/151/a_image_thumb.png?1515874598)
Identify this structure; seen best at what level?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/153/q_image_thumb.png?1515874628)
- Colon
- At T12
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/153/a_image_thumb.png?1515874806)
Which structures are seen at level of T12-L1?
- Pancreas, spleen, kidneys (particularly left)
- Gallbladder, portal triad, biliary tree
- SMA, left renal vein, aorta, IVC
- View of small bowel, left colon, duodenum
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/154/a_image_thumb.png?1515874847)
Identify this structure; seen best at which level?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/156/q_image_thumb.png?1515874792)
- SMA
- T12-L1
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/156/a_image_thumb.png?1515874859)
Which strucutres are seen at level of L3-L4?
- Right kidney
- Gallbladder
- View of small bowel, ascending/descending colon, 3rd part of duodenum
- Abdominal and post-abdominal musculature well visulaized
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/162/a_image_thumb.png?1515875042)
Identify this structure; well visualized at what level?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/166/q_image_thumb.png?1515875219)
- Psoas Muscle
- L3-L4
What is the modality of choice for diagnosing problems w/ the Biliary Tree?
- Endoscopic retrograde cholangiopanreatography (ERCP)
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/167/a_image_thumb.png?1515875440)
What is the imaging modality of choice for visualizing the abdominal aortic vasculature?
- Digital subtraction arteriography
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/169/a_image_thumb.png?1515875530)
What is the pathology seen here; causes?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/170/q_image_thumb.png?1515875599)
- Ascites (fluid accumulation in abdomen)
- Liver cirrhosis, salt/water retention, heart failure, cancer
What is a mid-sagittal view in CT useful in identifying?
Useful in assessing the SMA and “Nutcracker” syndrome
![](https://s3.amazonaws.com/brainscape-prod/system/cm/303/753/171/a_image_thumb.png?1515875792)