Image Analysis Chapter 12

1. For a PA oblique esophagus projection (RAO position) with accurate positioning,

a. the patient is rotated until the midcoronal plane is at a 35- to 40-degree angle with the IR.

b. the central ray is centered to the esophagus at the level of T6 to T7.

c. an 11- 14-inch (28- 35-cm) IR is used.

d. the patient drinks barium before the exposure only.

A

PP. 489-490

2. A PA esophagus projection that demonstrates the esophagus to the right of the vertebral column

a. will also demonstrate the right SC joint superimposed by the vertebral column.

b. was obtained with the patient rotated into an RAO position.

c. was obtained with the shoulders at equal distances from the IR.

d. was obtained with the right side of the chest positioned at a greater OID than the left side.

D

PP. 489-490

3. The quality of the mucosal coating on a stomach image depends on the

1. properties of the barium suspension.

2. volume of the barium and gas.

3. frequency of the washing.

4. amount of secretions in the stomach.

a. 1 and 2 only

b. 3 and 4 only

c. 1, 2, and 3 only

d. 1, 2, 3, and 4

D

P. 494

4. For a sthenic PA oblique stomach and duodenum projection (RAO position), the

1. patient is rotated until the midcoronal plane is at a 70-degree angle with the IR.

2. central ray is centered 1 to 2 inches superior to the lower rib margin.

3. central ray is perpendicular.

4. central ray is centered to the fundus.

a. 1 and 4 only

b. 2 and 3 only

c. 3 and 4 only

d. 1, 2, 3, and 4

B

PP. 495-496

5. A hypersthenic PA oblique stomach and duodenum projection (RAO position) with accurate positioning will demonstrate

1. barium in the fundus.

2. the left lumbar zygapophyseal joints in the posterior third of the vertebral bodies.

3. the long axis of the stomach foreshortened with a closed lesser curvature.

4. the pylorus in the center of the exposure field.

a. 1 and 4 only

b. 1, 2, and 3 only

c. 2, 3, and 4 only

d. 1, 2, 3, and 4

C

PP. 495-496

6. The air contrast is demonstrated in the ____ on a PA stomach and duodenum projection.

a. fundus

b. pylorus

A

PP. 494-495

7. For an asthenic right lateral stomach and duodenum projection,

1. barium will be seen in the pylorus, duodenal bulb, and descending duodenum.

2. the central ray is centered to the pylorus.

3. the central ray is directed at a level 2 inches (5 cm) superior to the sthenic habitus centering.

4. the stomach's lesser curvature will be closed.

a. 1 and 2 only

b. 2 and 3 only

c. 2 only

d. 1 and 4 only

A

P. 498

8. For a PA small intestine projection,

1. a marker indicating the time that has elapsed since the last image was obtained is demonstrated on the image.

2. the timing of the images begins after the patient ingests the contrast.

3. images are obtained until the barium reaches the right colic flexure.

4. the shoulders and ASISs are positioned at equal distances from the imaging table.

a. 1 and 3 only

b. 2 and 4 only

c. 2, 3, and 4 only

d. 1, 2, 3, and 4

B

P. 501

9. A PA small intestine projection demonstrates a greater distance from the right pedicles to the spinous processes than from the left pedicles to the spinous processes. Such a projection

1. will also demonstrate a wider right pelvic ala.

2. was obtained with the patient's left side positioned farther from the imaging table than the right side.

3. was obtained with the patient in an RAO position.

4. should be obtained only for the first image in the series.

a. 1 only

b. 1 and 2 only

c. 2 and 3 only

d. 2, 3, and 4 only

A

P. 504

10. Adequate large intestine distention and mucosal covering has been obtained when

a. the mucosal folds are demonstrated.

b. a thin coating of barium covers the mucosal surface.

c. the barium pool is limited to half the intestinal diameter.

d. the barium is pooled in the dependent surface.

B

P. 504

11. An AP large intestine projection with accurate positioning demonstrates

1. the spinous processes aligned with the midline of the vertebral bodies.

2. symmetrical iliac ala.

3. superimposition of the ascending and descending limbs of the colic flexure.

4. the fourth lumbar vertebra in the center of the exposure field.

a. 1 and 2 only

b. 3 and 4 only

c. 1, 2, and 3 only

d. 1, 2, 3, and 4

D

PP. 507-508

12. A PA large intestine projection demonstrates a right iliac ala that is narrower than the left one. Such a projection

1. also demonstrates a shorter distance from the left pedicle to the spinous process than from the right pedicle to the spinous process.

2. also demonstrates an increase in ascending and descending left colic limb superimposition.

3. was obtained with the patient rotated toward the right side.

4. was obtained with the patient's left ASIS positioned at a greater OID than the right ASIS.

a. 1 only

b. 2 and 4 only

c. 3 and 4 only

d. 2, 3, and 4 only

D

PP. 507-508

13. A left lateral rectum projection demonstrates the right femoral head anterior to the left femoral head. Such a projection

1. also demonstrates the right femoral head superior to the left femoral head.

2. is obtained by positioning the posterior pelvic wings perpendicular to the IR.

3. demonstrates a magnified right femoral head.

4. is made optimal by rotating the right hip posteriorly.

a. 1 and 3 only

b. 3 only

c. 2 and 4 only

d. 3 and 4 only

D

PP. 508-509

14. For an AP-PA large intestine projection (lateral decubitus position),

1. uniform density is obtained by positioning the thick end of the compensating filter toward the imaging table.

2. an arrow or word marker is placed on the IR to indicate the side positioned adjacent to the imaging table.

3. the shoulders, posterior ribs, and posterior pelvis are positioned at equal distance to the imaging table.

4. the central ray is centered to the midsagittal plane at the level of the iliac crest.

a. 1 and 4 only

b. 2 and 3 only

c. 4 only

d. 1, 2, 3, and 4

C

P. 509

15. A PA oblique large intestine projection (RAO position) with accurate positioning demonstrates

1. the rectosigmoid segments without superimposition.

2. a narrowed right iliac ala.

3. the entire large intestine.

4. decreased superimposition (when compared with a PA projection) of the right colic flexure limbs.

a. 2 and 3 only

b. 1 and 4 only

c. 1, 2, and 3 only

d. 1, 2, 3, and 4

D

PP. 509-511

16. For a PA axial oblique large intestine projection (RAO position), the

1. patient is rotated until the midcoronal plane is at a 35- to 45-degree angle with the imaging table.

2. central ray is angled 30 to 40 degrees caudally.

3. central ray is centered to exit at the ASIS and 2 inches (5 cm) to the left of the spinous processes.

4. 11- 14-inch (28- 35-cm) IR is placed crosswise.

a. 1 only

b. 2 and 3 only

c. 1, 2, and 3 only

d. 1, 2, 3, and 4

C

PP. 509-511

17. A PA axial oblique large intestine projection (RAO position) demonstrates an obscured right SI joint and closed left obturator foramen. Such a projection

1. was obtained with the patient rotated more than the required amount.

2. also demonstrates the inferior aspect of the left acetabulum superior to the distal rectum.

3. was obtained with the central ray angled less than the required amount.

4. was obtained with the patient rotated less than the required amount.

a. 1 only

b. 1 and 2 only

c. 1, 2, and 3 only

d. 4 only

A