Question 1

How long should the patient lie in the decubitus position before making the exposure during a mobile decubitus chest examination?&#10;A) 1 minute&#10;B) 2 minutes&#10;C) 3 minutes&#10;D) 5 minutes

Accepted Answer

5 minutes

Question 2

The generators for mobile units have the same kilowatt rating as stationary x-ray equipment.

Accepted Answer

Mobile unit generators typically have lower kilowatt ratings compared to stationary x-ray equipment due to their need for portability and limited power supply.

Question 3

The central ray must be centered within how many inches of the midline of the grid to avoid grid cutoff?&#10;A) 1 inch&#10;B) 1inches&#10;C) 2 inches&#10;D) 2inches

Accepted Answer

1inches

Question 4

During a mobile exposure,the radiographer should be how far from the patient or part being radiographed?&#10;A) 4 feet&#10;B) 5 feet&#10;C) 6 feet&#10;D) 10 feet

Accepted Answer

The radiographer should be at least 6 feet away from the patient or the part being radiographed to minimize exposure to scatter radiation.

Question 5

Which protective attire is worn by the radiographer if a patient has drainage secretion precautions?&#10;A) Gown&#10;B) Shoe covers&#10;C) Gloves&#10;D) Mask

Accepted Answer

The answer of Which protective attire is worn by the...

Question 6

During mobile radiography,the radiographer ideally should be standing at what degree of angle from the primary beam?&#10;A) 0 degrees&#10;B) 45 degrees&#10;C) 90 degrees&#10;D) 45 to 90 degrees

Accepted Answer

Standing at 90 degrees to the primary beam minimizes exposure to scatter radiation, providing the safest position for the radiographer.

Question 7

The single most effective means of radiation protection during mobile radiography is:&#10;A) distance.&#10;B) exposure time.&#10;C) choice of kVp.&#10;D) use of a nongrid technique.

Accepted Answer

Increasing the distance from the radiation source significantly reduces exposure due to the inverse square law, making it the most effective means of protection.

Question 8

Mobile radiographic units can have direct digital capability with wired to the unit or wireless.

Accepted Answer

Mobile radiographic units can be equipped with direct digital capabilities, either through a wired connection to the unit or via wireless technology, allowing for immediate image capture and transfer.

Question 9

Most grids used for mobile radiography have ratios of:&#10;A) 6:1 or 8:1.&#10;B) 8:1 or 10:1.&#10;C) 10:1 or 12:1.&#10;D) 12:1 or 16:1.

Accepted Answer

Most mobile radiography grids have lower grid ratios like 6:1 or 8:1 to allow for more flexibility in positioning and to accommodate the varying distances and angles encountered in mobile settings.

Question 10

During mobile radiography,the least amount of scattered radiation will occur at what angle to the patient or part being radiographed?&#10;A) 45 degrees&#10;B) 50 degrees&#10;C) 70 degrees&#10;D) 90 degrees

Accepted Answer

Scattered radiation is minimized at 90 degrees to the direction of the primary beam, as it is perpendicular to the path of the x-rays.

Question 11

Which position is recommended for a mobile AP chest examination on a critically ill patient?&#10;A) Seated upright at a 90-degree angle&#10;B) Seated upright at a 45-degree angle&#10;C) Supine&#10;D) Left lateral decubitus

Accepted Answer

The answer of Which position is recommended for a mobile...

Question 12

According to federal regulations,the source-to-skin (SSD)distance during mobile radiography may not be less than _____ inches.&#10;A) 10&#10;B) 12&#10;C) 15&#10;D) 24

Accepted Answer

The answer of According to federal regulations,the source-to-skin (SSD)distance during...

Deck 20: Mobile Radiography