Test 3 Lab

SID for Esophagus & UGI exams

40 inches

kVp for barium

110-120 kVp

kVp for gastrografin

70-80 kVp

Exposure time for recumbent exams

0.2 sec or less

Exposure time for erect exams

0.1 sec or less

RAO of Esophagus: CR

Perpendicular entering at T5-T6 and 2” to elevated side

PA of Esophagus: CR

Perpendicular entering at T5-T6 at MSP

Right Lateral of Esophagus: CR

Perpendicular at level of T5-T6 at MCP

For esophagus exam the exposure is made…

while patient is drinking

degree of obliquity for RAO of esophagus

35-40 degrees

RAO of UGI: CR

Perpendicular entering 1”-2” above lower rib magin at L1 and L2, midway between sagittal plane and lateral border of elevated side

Right Lateral of UGI: CR

Perpendicular entering 1”-2” above lower rib margin at L1-L2, midway between MCP and anterior surface of body

LPO of UGI: CR

Perpendicular to midway between zyphoid process and lower margin of ribs, midway between sagittal plane and lateral margin of abdomen

PA of UGI: CR

Perpendicular entering 1”-2” above lower rib margin at L1 - L2, midway between sagittal plane and left lateral border of abdomen

Degree of obliquity for RAO of UGI

40-70 degrees

Peristalsis is most active in what postion?

RAO of UGI

Degree of obliquity for LPO of UGI

30-60 degrees

Breathing instructions for UGi exams

exposure made at the end of expiration

If we were to do AP of UGI instead of PA, where would we center?

midway between zyphoid process and lower magin of ribs

For RAO & PA of UGI barium is in the ________ and air is in the __________ of stomach

body/pylorus; fundus

For Right Lateral Position of UGI barium is in the _________ and air is in the _________

body; fundus of stomach

For LPO and AP of UGI barium is in the ________ and air is in the _________ of stomach

fundus; body/pylorus

Breathing for Large Intestine

exposure made at the end of expiration

AP Projection & AP Post Evac of Large Intestine: CR

Perpendicular entering at iliac crest

AP Axial (Tilt) of Large Intestine: CR

30-40 degrees cephalix entering 2” inferior to ASIS (35 degrees)

For AP Axial (Tilt) of Large Intestine we drop SID to…

33 inches

Purpose of the AP Axial (Tilt) of Large Intestine

straightens out the rectosigmoid portion

If the AP Axial (Tilt) of Large Intestine is done PA, it would be called…

PA Axial (Butterfly) and would be done caudal

Left Lateral of Large Intestine: CR

Perpendicular to MCP at ASIS

For the Left Lateral of the Large Intestine we want to see…

the rectum and sigmoid areas

AP Oblique (RPO & LPO) of Large Intestine: CR

Perpendicular at iliac crest and 2” toward elevated side

The AP Oblique (RPO) of Large Intestine will show…

the splenic flexure/ left colic flexure & descending colon

The AP Oblique (LPO) of Large Intestine will show…

the hepatic flexure/ right colic flexure, ascending colon, cecum, & sigmoid

Right & Left Lateral Decubs of Large Intestine: CR

Horizontal and perpendicular to IR at iliac crest

The Right Lateral Decub of the Large Intestine will show…

the medial side of the ascending colon and lateral side of descending colon (looking at air inflated portions)

The Left Lateral Decub of the Large Intestine will show…

the medial side of the descending colon and the lateral side of the ascending colon (looking at air inflated portiolns)

AP Post Evac of Large Intestine is done to…

check for residual contrast in the colon