BE & Large Intestine Flashcards
In which abdominal region does the large intestine originate?
Right iliac
Which structure is the proximal part of the large intestine?
Cecum
Which part of the large intestine is located between the ascending and descending parts of the colon?
Transverse colon
Which structure is located between the ascending colon and the transverse colon?
Right colic flexure
Where in the large intestine is the left colic flexure located?
Between the transverse colon and the descending colon
Which structure is the pouch like part of the large intestine situated below the junction of the ileum and the colon?
Cecum
Where in the large intestine is the sigmoid located?
Between the descending colon and the rectum
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?
RAO and LPO
What is the proper sequence for filling the large intestine with barium when performing a BE?
Rectum, sigmoid, descending colon, transverse colon, and ascending colon
Which instructions should be given to the patient if cramping is experienced during filling of the large intestine for a BE?
Concentrate on deep breathing
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?
To remove air from the tube
Which procedure should be accomplished when inserting the enema tip for a BE?
Ensure the tip is inserted no more than 3 1/2 - 4 inches
For the PA projections during a BE, what is the advantage of placing the X-ray table and patient in a slight trendelenburg position?
To help separate overlapping loops of the distal bowel
Which structures of the large intestine are of primary interest with AP axial or PA axial projections during a BE?
Sigmoid and rectum
How many degrees and in which direction should the central ray be directed for the PA axial projection during a BE?
30-40 degrees caudal
Which structure of the large intestine is of primary interest for the PA oblique projection, RAO position, during BE exam?
Right colic flexure
Which two oblique projections can be performed to demonstrate best the left colic flexure during a BE?
PA oblique projection LAO position, AP oblique projection RPO position
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?
Right colic flexure
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?
Elevate the patient on a radiolucent support
Which BE projection requires that a 10x12 inch IR be placed lengthwise and centered to the level of the anterior superior iliac spine (ASIS)?
Lateral projection
Which BE projection does not require colic flexures to be included in the image?
Lateral projection
