Anatomy
Where is barium found in the stomach on an AP projection?
fundus
What is the central ray for an AP projection?
level of L1 and midway between midline and left lateral rib margin
What position is the patient in for the AP projection?
supine
What is the room setup?
prepare the contrast medium of choice (depends on the radiologist)
What is our job during the procedure?
to assist the radiologist, set up room, take good history, obtain pre/post images
What is best demonstrated on the lateral projection?
c-loop of duodenum and the retrogastric space
What is the central ray for a lateral projection?
level of L1 and 1-1 1/2 inches anterior MCP
What position is the patient in to obtain a lateral image?
patient is recumbent in right lateral position, flex knees and place arms near their head
What is the image receptor required for a lateral projection of the stomach?
10x12 lengthwise
What is the patient prep?
NPO for at least 8 hours
What is best demonstrated on the RAO projection?
duodenal bulb
What is the central ray for a PA projection?
level of L1 and 1 inch to the left of the vertebral column
What degree of obliquity is required for LPO position?
30-60 degrees from supine
What is the kvp range for a double-contrast study?
90-100
What are some clinical indications?
hiatal hernia, ulcers, gastritis, gastric carcinomas
Where is barium found in the stomach on a PA projection?
body and pylorus
What is the central ray for a RAO projection?
level of L1 and midway between spine and upside lateral border
What degree of obliquity is required from RAO position?
40-70 degrees from prone
What is the kvp range for a single contrast study?
110-125
Stomach position on hypersthenic patient?
high and transverse
Where is barium found in the stomach on a LPO projection?
fundus
How does the central ray change for a hypersthenic patient?
2 inches more superior than sthenic patient
How does the positioning for a hypersthenic patient for the RAO projection change?
more rotation is required
What image receptor is required for a hypersthenic patient for an AP projection?
10x12 crosswise
Stomach position on hyposthenic patient?
low and vertical