GI Exam 2

Question 1

what is the degree of angulation for a PA axial large intestine

Answer 1

30-40 degrees caudad

Question 2

what is being visualized in a PA axial

Answer 2

Rectosigmoid colon

Question 3

what is the body rotation for PA Obliques

Answer 3

35-45 degrees

Question 4

name the centering point for the PA Obliques

Answer 4

Level of crest, 1-2’’ lateral from the midline to elevated side

Question 5

what is visualized on PA Obliques

Answer 5

colic flexure on side down
RAO: R. colic flexure; ascending portion; sigmoid colon
LAO: L. colic flexure; descending portion; transverse colon

Question 6

Compare with AP Obliques; which AP Oblique will show the same anatomy of the LAO(PA Oblique)?

Answer 6

RPO: L. colic flexure; descending portion; transverse colon

Question 7

Compare with AP Obliques; which AP Oblique will show the same anatomy of the RAO(PA Oblique)?

Answer 7

LPO: R. colic flexure; ascending portion; sigmoid colon

Question 8

cassette size for lateral?

Answer 8

10x12

Question 9

should the lateral be done in a left or right position

Answer 9

either

Question 10

what is visualized on the lateral

Answer 10

rectum and distal sigmoid colon

Question 11

name the centering for the lateral

Answer 11

level of ASIS at MCP

Question 12

what is body rotation for AP Obliques

Answer 12

35-45 degrees

Question 13

which set oblique is a sponge used with; AP or PA

Answer 13

AP Obliques

Question 14

true or false; centering points for the AP Obliques are the same as PA Obliques

Answer 14

True: Level of crest, 1-2’’ lateral from the midline to elevated side

Question 15

R or L lateral decubitus; when are they used

Answer 15

double contrast studies

Question 16

in a R or L lateral decubitus which is side of interest

Answer 16

side “up”

Question 17

R lateral decub demonstrates what

Answer 17

medial side of ascending colon and lateral of descending colon

Question 18

L lateral decub demonstrates what

Answer 18

lateral side of ascending colon and medial of descending colon

Question 19

name the centering for the R/L decubitus

Answer 19

level of iliac crests at MSP

Question 20

true or false: the body should be elevated for the decubitus positions

Answer 20

true

Question 21

for the ventral/dorsal decubitus positions; where would you center

Answer 21

level of the crests at MCP

Question 22

vental decub

Answer 22

posterior portions of the colon

Question 23

dorsal decub

Answer 23

anterior portions of the colon

Question 24

true or false: for uprights the IR is centered higher

Answer 24

False! its lower to compensate for gravity

Question 25

where could the upright film be centered

Answer 25

ASIS

Question 26

with hypersthenic patients how should you image their intestines

Answer 26

two 14x17 cassettes crosswise per projection (except for obliques)

Question 27

what position is the patient in for the Chassard-lapine method

Answer 27

PT is bent over and holds their ankles

Question 28

what doees the Chassard-Lapine method show

Answer 28

rectum; recto-sigmoid junction; and sigmoid; anterior and posterior surfaces of the lower potion of the bowel

Question 29

true or false the chassard-lapine can be done post or pre evac

Answer 29

true

Question 30

where is the chassard-lapine position centered

Answer 30

level of greater trochanters

Question 31

what happens with a colostomy

Answer 31

terminal part of the colon is brought to the anterior surface of the abdomen and an artificial opening (stoma) is made through the skin

Question 32

true or false: a BE can be done through a colostomy stoma

Answer 32

true

Question 33

when is defecography used

Answer 33

to evaluate defecation dysfunction