Upper G.I.
Tract Biphasic-Contrast Exam (cont.)
Method
(cont.)
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Increase kVp to 125 for
single-contrast graded-compression (SCGC) spot filming. Turn patient into
right anterior oblique (RAO) position. Place compression paddle beneath
patient and inflate balloon for graded compression of duodenal bulb. Take
one SCGC spot (4-on-1 film format) of duodenal bulb and one SC spot of
distended proximal duodenal loop.
- Turn x-ray table upright. Use Holzknecht paddle and/or compression cone on fluoroscope to
obtain graded compression of duodenal bulb. Take two SCGC spots (4-on-1
format) of the bulb.
- Then, use compression cone on fluoroscope (or Holzknecht paddle if patient is obese) and take four SCGC spots (4-on-1 film
format) of:
- Gastric antrum (patient LPO)
- Gastric antrum/body (patient LPO or AP)
- Gastric body (patient AP)
- Gastric body/fundus (patient RPO)
- Decrease kVp to 90. Turn patient into LPO position.
Quickly scan the mediastinum to be sure that the esophagus is empty of
barium. Turn the table into horizontal position and resume fluoro. Take two
DC spots (4-on-1 film format) of duodenal bulb and two DC spots of
air-filled duodenal C-loop.
- Observe for spontaneous gastroesophageal reflux as you
turn patient towards you (counter-clockwise if viewed from foot of table)
into RAO position.
- Increase kVp to 125. Have the patient drink several
single swallows of dilute, non-carbonated barium through a straw.
Observe esophageal motility and also look for anatomic lesions. Take one
SC spot (2-on-1 format) of the barium-distended lower esophagus and gastric
cardia during breath-holding and one SC spot of the same area during
Valsalva maneuver to evaluate for a possible sliding hiatal hernia.
- Have the technologist take one overhead film (14" x
17", 125 kVp) of the abdomen with patient in prone position.
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