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Lower GI Radiography
Lower GI positioning
| Question | Answer |
|---|---|
| Included in the large intestine but not the colon | Cecum and rectum |
| Location of the appendix | RLQ |
| ~Length of the large intestine | 5' |
| Terminal opening of the large intestine | Anus |
| Term for large intestinal sacculations | Haustra |
| Pathology that causes a cobblestone appearance to the colon, caused by ulcers | Ulcerative colitis |
| Pre-cancerous saclike projections into the lumen of the bowel | Polyps |
| Blind pouch of the rectum | Rectocele |
| Exam that will best demonstrate a rectocele | Defecography |
| May present as a napkin-ring or apple core lesion | Colon cancer |
| Telescoping, most common in infants | Intussusception |
| Contraindications to BaSO4 | Perforation, large bowel obstruction, pregnancy |
| Type of contrast used for defecography | Thick barium paste |
| Stages evaluated during the DP | Resting and straining |
| Can a BE be performed following a colonoscopy | Yes, as long as a biopsy was NOT done during the colonoscopy |
| BE prep | 24-48 hour cathartic bowel prep |
| Position for placement of the enema tip | Sims |
| Type of tip utilized | rectal (air-contrast) retention tip |
| Do you inflate the tip once it is in place | No, the tip should be inflated under fluoro guidance |
| Most common negative contrast media | Air |
| Drug physician may order to control colonic spasm | Glucagon |
| Most important aspect of preparing the enema bag | CLAMPING IT |
| Surgical formation of an anastomosis between 2 portions of the colon | Colostomy |
| Location of the Barium when the patient is supine | Ascending and descending colon |
| Location of the Barium when the patient is prone | Transverse colon and loops of sigmoid colon |
| Best demonstrates the right colic flexure | RAO or LPO |
| Best demonstrates an elongated rectosigmoid area | AP/PA axial sigmoid, LPO/RAO double angle sigmoid "butterfly" |
| Best demonstrates the left colic flexure | LAO or RPO |
| Images done for a double contrast BE, but not single | Decubs, XTL rectum |
| Shortest portion of the small bowel | Duodenum |
| Junction of the duodenum and jejunum | Duodenojejunal flexure |
| Smoothest, thinnest portion of the small bowel | Ileum |
| Patient prep for a small bowel | NPO after midnight |
| Preferred position for SB images | Prone |
| Pathology that may present as a string sign | Crohns |
| Cessation of peristalsis | Paralytic ileus |
| Double contrast small bowel study | Enteroclysis |
Created by:
EHodgis
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