Question 1

How much is the body rotated for the PA oblique projection of the stomach and duodenum?

Accepted Answer

The body is typically rotated 40 to 70 degrees for the PA oblique projection of the stomach and duodenum to properly visualize the anatomy.

Question 2

Which of the following planes is centered to the grid for the lateral projection of the esophagus?

Accepted Answer

The answer of Which of the following planes is centered...

Question 3

What is the recommended general body position for a radiographic series of the esophagus?

Accepted Answer

The recumbent position is recommended for a radiographic series of the esophagus to better visualize the esophagus and detect any abnormalities such as reflux or hiatal hernia.

Question 4

What is the respiration phase for all radiographic exposures of the stomach and intestines?

Accepted Answer

The answer of What is the respiration phase for all...

Question 5

Which of the following are essential oblique projections of the stomach and duodenum?
1)AP projection, LPO
2)PA projection, RAO
3)PA projection, LAO

Accepted Answer

The answer of Which of the following are essential oblique...

Question 6

Which of the following best describes the administration of barium for an esophagram being performed for esophageal varices?

Accepted Answer

When performing an esophagram for esophageal varices, the patient is instructed to exhale, swallow the barium, and hold their breath out. This technique helps to distend the esophagus and visualize any varices present. Inhaling during administration could cause the barium to enter the trachea and lungs, which could be dangerous for the patient.

Question 7

Food and fluid should be withheld for how many hours before a stomach examination?

Accepted Answer

Food and fluid should be withheld for 8 hours before a stomach examination to ensure an empty stomach and reduce the risk of aspiration during the procedure.

Question 8

At which level is the IR centered for a PA projection of the stomach and duodenum?

Accepted Answer

The IR should be centered at the level of L1/L2 for a PA projection of the stomach and duodenum to include the entire stomach and duodenal loop.

Question 9

What is the degree of body rotation for the PA oblique projection of the esophagus?

Accepted Answer

The answer of What is the degree of body rotation...

Question 10

Which of the following are advantages of using the recumbent position for images of the esophagus?
1)Varices better filled
2)Easier to swallow barium
3)More complete contrast filling, especially proximal part

Accepted Answer

The recumbent position for images of the esophagus provides advantages such as better filling of varices and more complete contrast filling, especially in the proximal part. It does not necessarily make it easier to swallow barium. Therefore, options 1 and 3 are the correct choices. Option 2 is incorrect.

Question 11

Which drug may be given to the patient before a double-contrast examination of the stomach to relax the gastrointestinal tract?

Accepted Answer

Glucagon is a medication that can be given before a double-contrast examination of the stomach to relax the gastrointestinal tract. This helps to reduce spasms and improve the visibility of the stomach lining during the exam. Heparin is a blood thinner and would not be used for this purpose. Demerol is a pain reliever and oral chlorhydrate is not a commonly used medication.

Question 12

What is the recommended oblique projection and position for the best demonstration of the esophagus?

Accepted Answer

The PA (posteroanterior) projection is preferred for the esophagus because it allows the esophagus to be superimposed over the spine, making it easier to see. The RAO (right anterior oblique) position is preferred over the LAO (left anterior oblique) position because it allows the esophagus to be projected away from the spine, providing a better view of the entire length of the esophagus. Therefore, PA, RAO is the recommended oblique projection and position for the best demonstration of the esophagus.

Question 13

A PA projection of the stomach and duodenum is often performed using a 14 * 17 inch (35 * 43 cm) IR. Which of the following describes the plane that is centered to the grid for this projection?

Accepted Answer

The midsagittal plane is centered to the grid for a PA projection of the stomach and duodenum to ensure proper alignment and visualization of these structures.

Question 14

Which of the following are the essential projections for an esophagus series?
1)AP or PA
2)Lateral
3)PA oblique

Accepted Answer

The essential projections for an esophagus series typically include AP or PA, lateral, and PA oblique to provide comprehensive views of the esophagus.

Question 15

The routinely used methods of examining the stomach include _____ contrast.
1)no
2)single
3)double

Accepted Answer

Single and double contrast methods are routinely used in radiographic examinations of the stomach to provide detailed images for diagnostic purposes.

Question 16

How much lower should the IR be positioned when the upright position is used for projections of the stomach?

Accepted Answer

When the patient is in the upright position, the stomach tends to drop lower due to gravity, so the IR should be positioned 3 to 6 inches lower to ensure the stomach is adequately included in the projection.

Question 17

The patient "prep" for a morning stomach examination is food and fluid are withheld:

Accepted Answer

The standard patient prep for a morning stomach examination is to fast after midnight. This usually means no food or fluid intake for at least 6-8 hours before the exam. In some cases, a longer fast may be required, but 12-24 hours without food or fluid is not typical for this type of exam.

Question 18

A PA projection of the stomach and duodenum can be performed using a 10 * 12 inch (24 * 30 cm) IR. Which of the following describes the plane that is centered to the grid for this projection?

Accepted Answer

The PA projection of the stomach and duodenum is centered to a sagittal plane passing halfway between the midline and the lateral border of the abdomen. Option D describes this plane accurately.

Question 19

Which of the following are advantages of using the double-contrast technique for examination of the stomach?
1)Fewer images are required.
2)Small lesions are not obscured.
3)The mucosal lining of the stomach can be more clearly visualized.

Accepted Answer

The double-contrast technique enhances the visualization of the stomach's mucosal lining and helps in detecting small lesions by providing a clearer and more detailed image.

Question 20

The degree of body rotation for the PA oblique projection of the stomach will depend on the body habitus. The greatest degree of rotation would be used for which body habitus?

Accepted Answer

The degree of body rotation for the PA oblique projection of the stomach will depend on the body habitus, with the greatest degree of rotation being required for hypersthenic patients who have a large, broad body build with a short torso and thick abdominal wall. This rotation is necessary to move the stomach out of the way of the superimposed bowel gas and to ensure that the pyloric canal is visible on the radiograph. Sthenic patients would require less rotation than hypersthenic patients, while asthenic and hyposthenic patients would require the least degree of rotation.

Quiz 17: Digestive System: Alimentary Canal