BE & Large Intestine

Question 1

In which abdominal region does the large intestine originate?

Answer 1

Right iliac

Question 2

Which structure is the proximal part of the large intestine?

Answer 2

Cecum

Question 3

Which part of the large intestine is located between the ascending and descending parts of the colon?

Answer 3

Transverse colon

Question 4

Which structure is located between the ascending colon and the transverse colon?

Answer 4

Right colic flexure

Question 5

Where in the large intestine is the left colic flexure located?

Answer 5

Between the transverse colon and the descending colon

Question 6

Which structure is the pouch like part of the large intestine situated below the junction of the ileum and the colon?

Answer 6

Cecum

Question 7

Where in the large intestine is the sigmoid located?

Answer 7

Between the descending colon and the rectum

Question 8

Which two recumbent oblique positions can be used to demonstrate best an unobstructed image of a barium-filled esophagus between the vertebrae and the heart?

Answer 8

RAO and LPO

Question 9

What is the proper sequence for filling the large intestine with barium when performing a BE?

Answer 9

Rectum, sigmoid, descending colon, transverse colon, and ascending colon

Question 10

Which instructions should be given to the patient if cramping is experienced during filling of the large intestine for a BE?

Answer 10

Concentrate on deep breathing

Question 11

Before the enema tip is inserted during a BE, why should a small amount of barium sulfate mixture be allowed to run into a waste basin?

Answer 11

To remove air from the tube

Question 12

Which procedure should be accomplished when inserting the enema tip for a BE?

Answer 12

Ensure the tip is inserted no more than 3 1/2 - 4 inches

Question 13

For the PA projections during a BE, what is the advantage of placing the X-ray table and patient in a slight trendelenburg position?

Answer 13

To help separate overlapping loops of the distal bowel

Question 14

Which structures of the large intestine are of primary interest with AP axial or PA axial projections during a BE?

Answer 14

Sigmoid and rectum

Question 15

How many degrees and in which direction should the central ray be directed for the PA axial projection during a BE?

Answer 15

30-40 degrees caudal

Question 16

Which structure of the large intestine is of primary interest for the PA oblique projection, RAO position, during BE exam?

Answer 16

Right colic flexure

Question 17

Which two oblique projections can be performed to demonstrate best the left colic flexure during a BE?

Answer 17

PA oblique projection LAO position, AP oblique projection RPO position

Question 18

Which structure of the large intestine is best demonstrated if the patient is rotated 45 degrees from a supine position to move the right side of the abdomen away from the X-ray table during a BE?

Answer 18

Right colic flexure

Question 19

For the right lateral decubitus position as part of a BE, which procedure should be done to ensure that the ascending colon is demonstrated in the image?

Answer 19

Elevate the patient on a radiolucent support

Question 20

Which BE projection requires that a 10x12 inch IR be placed lengthwise and centered to the level of the anterior superior iliac spine (ASIS)?

Answer 20

Lateral projection

Question 21

Which BE projection does not require colic flexures to be included in the image?

Answer 21

Lateral projection