SM_168b: Imaging of GI Tract Flashcards
Describe basic CT imaging terminology
Basic CT imaging terminology
- Hyeprdense (bright): calcium, blood, solid tumor, contrast
- Hypodense (dark): simple fluid, solid, fat
- Enhancing (post contrast CT): solid tumor inflammation
Describe basic ultrasound imaging terminology
Basic ultrasound imaging terminology
- Anechoic (black): simple fluid
- Hypoechoic (dark): not simple fluid or mass
- Echogenic (bright): calcium, air, tumor
Rule for radiation exposure is ____
Rule for radiation exposure is ALARA
____ studies best evaluate mucosa and motility of esophagus, stomach, duodenum, intestine, and colon
Barium studies studies best evaluate mucosa and motility of esophagus, stomach, duodenum, intestine, and colon
Common indications for CT in imaging of GI tract are ____, ____, and ____
Common indications for CT in imaging of GI tract are bowel obstruction, inflammation, and tumor evaluation
- Use IV and oral contrast
Liver imaging involves use of ____, ____, and ____
Liver imaging involves use of ultrasound, triphasic liver CT, and MRI liver exams
- MRI has best soft tissue characterization for evaluation of the hepatic parenchyma
___ has best soft tissue characterization for evaluation of hepatic parenchyma
MRI has best soft tissue characterization for evaluation of hepatic parenchyma
Gallbladder imaging is best accomplished with ____ followed by ____
Gallbladder imaging is best accomplished with ultrasound followed by MRI
Pancreatic pathology is best evaluated by ____ and ____
Pancreatic pathology is best evaluated by triphasic CT and pancreas MRI
____ can interfere with evaluation of pancreas on ultrasound exams
Bowel gas can interfere with evaluation of pancreas on ultrasound exams
Hollow organs of the GI tract are ____, ____, ____, and ____
Hollow organs of the GI tract are esophagus, stomach, small intestine, and colon
This is the ____
This is the esophagus
Shown are the ____ and ____
Shown are the stomach and small bowel
Shown are the ____ and ____
Shown are the duodenal bulb and small bowel
Barium with serial X-rays is used primarily to assess ____
Barium with serial X-rays is used primarily to assess bowel motility
Shown are the ____ and ____
Shown are the small bowel and colon
Describe the anatomy
Anatomy
Shown are the ____, ____, and ____
Shown are the stomach, jejunum, and ileum
Describe the anatomy
Anatomy
Describe the anatomy
Anatomy
Describe the anatomy
Anatomy
Describe the anatomy
Anatomy
Describe the anatomy
Anatomy
Colon is evaluated via a ____
Colon is evaluated via a barium enema
(X-rays, barium, air via rectal tube)
Gallbladder is best evaluated by ____
Gallbladder is best evaluated by ultrasound
Shown are a normal ____ and ____
Shown are a normal gallbladder and liver
This is a normal ____
This is a normal liver
Describe the anatomy
Anatomy
Pancreas ultrasound often has limited visualization due to ____ and ____
Pancreas ultrasound often has limited visualization due to difficulty for sound waves to penetrate obese patients and overlying bowel gas from the stomach
- Often go onto CT or MRI
This is the ____
This is the pancreas
____ is the best study for bowel obstruction
CT abdomen / pelvis is the best study for bowel obstruction
Describe the anatomy
Anatomy
Describe the anatomy
Anatomy
___ is the imaging modality for RUQ pain
Ultrasound is the imaging modality for RUQ pain
____ is the imaging modality for suspected small-bowel obstruction
CT abdomen and pelvis with contrast is the imaging modality for suspected small-bowel obstruction
