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Large Intestine 3
RAD 135 Exam 2 Part 3
| Question | Answer |
|---|---|
| PA or AP Large Intestine patient position | Prone or Supine, MSP centered to midline, center the IR at the level of the patients iliac crests |
| The CR Enters the MSP at the level of the iliac crests when performing a- | PA or AP Large Intestine Projection |
| For a PA Large Intestine X-Ray, Positioning the patient in a slight ___________ position helps separate redundant and overlapping loops of the bowel by “spilling” them out of the pelvis | Trendelenburg (head lower than feet) |
| Taking 2 AP/PA Large Intestine images may be necessary for _______ patients | Hypersthenic |
| The patient should be positioned __________ when performing a PA Axial (Sigmoid) Large Intestine X-Ray | Prone |
| The patient should be positioned __________ when performing a AP Axial (Sigmoid) Large Intestine X-Ray | Supine |
| The CR should be angled ________ when performing a PA Axial (Sigmoid) Large Intestine X-Ray | 30-40° Caudad |
| The CR should be angled ________ when performing a AP Axial (Sigmoid) Large Intestine X-Ray | 30 - 40° Cephalad |
| The CR should ___________ when performing a PA Axial (Sigmoid) Large Intestine X-Ray | Exit MSP at level of ASIS |
| The CR should ___________ when performing a AP Axial (Sigmoid) Large Intestine X-Ray | Enter MSP 2 inches below ASIS |
| The IR is centered to 2 inches above iliac crests for a _________ projection, while its counterpart is centered at the iliac crest | AP Axial (Sigmoid) Large Intestine |
| PA Oblique Large Intestine (RAO) Patient Position | Elevate left side 35-40° |
| AP Oblique (LPO) Large Intestine Patient Position | Elevate right side 35-40° |
| The CR enters _________ For both an AP and PA Oblique Large Intestine Projection | 1-2 inches lateral to midline on elevated side at level of iliac crests |
| The Elevated side is not always the side of interest of a patient when performing a ___________ X-Ray | PA Oblique Large Intestine (RAO) |
| Left Colic Flexure Splenic Flexure Descending Colon ^ Will all be visualized in an _____ position | LAO/RPO |
| Right Colic Flexure Hepatic Flexure Ascending Colon Sigmoid Colon ^ Will all be visualized in an _____ position | RAO/LPO |
| Why will RAO position best demonstrate the sigmoid colon? | Because the Sigmoid Colon is peritoneal |
| Lateral Large Intestine - Rectum Patient Position | Recumbent right or left lateral (left tends to be more common) IR Centered at the ASIS |
| The CR should _________ when performing a Lateral Large Intestine - Rectum X-Ray | Enter MCP at level of ASIS |
| You will see the Lateral rectum, distal sigmoid, and the L5-S1 joint in a __________ X-Ray | Lateral Large Intestine - Rectum |
| Use your marker to mark the _____ when performing a Right or Left Lateral Decubitus | Up side |
| Recumbent lateral Back or abdomen in contact with grid Body elevated on radiolucent support IR centered to level of iliac crests ^ All describe Patient Position for a_________ X-Ray? | AP/PA Large Intestine Right or Left Lateral Decubitus |
| _________ Shows the medial side of ascending colon and lateral side of descending colon | Right Lateral Decubitus |
| _________ Shows the lateral side of ascending colon and medial side of descending colon | Left Lateral Decubitus |
| In a Left Lateral Decubitus Position, which portions of the colon will be of interest? | The Medial Wall of the Descending Colon |
| In a Right Lateral Decubitus Position, which portions of the colon will be of interest? | The Lateral Wall of the Ascending Colon |
| In a double contrast study, is the barium or the air the part of interest? | Air |
| Does air go up or down? | Up |
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