Lack of such control may be attributed to which of the following?

The patient’s age Breathing patterns or problems Physical discomfort Fear of the examination Mental instability

Neglecting to use standardized technique charts necessitates estimating the technical exposure factors, which may result in

poor-quality images. repeat examinations. additional and unnecessary exposure of the patient.

Reducing the field size to the anatomic features of interest not only reduces patient exposure but also..

increases completed image quality by decreasing scatter

A properly calibrated automatic exposure control (AEC) is not employed to obtain a uniform selection of technical x-ray exposure factors, well-managed imaging departments?

Make use of standardized technique charts that have been established for each x-ray unit in that facility.

Which of the following procedures results in the lowest radiation effective dose to the patient?

Dual energy X-ray absorptiometry

Which of the following are involuntary motions that cannot be willingly controlled?

-Chills -Tremors -Muscle spasms -Pain -Active withdrawal

Computed radiography, because of its higher exposure latitude, makes grid use on the pediatric population

less necessary than was previously believed.

When a fluoroscopic image is electronically amplified by the use of an image intensification system, which of the following benefits results?

-Saving of time for the radiologist - Patient dose reduction

When using digital fluoroscopy systems, making use of the last image hold feature can

effective dose reduction technique.

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WEEK 11 EXAM 3

Question	Answer
Lack of such control may be attributed to which of the following?	The patient’s age Breathing patterns or problems Physical discomfort Fear of the examination Mental instability
Neglecting to use standardized technique charts necessitates estimating the technical exposure factors, which may result in	poor-quality images. repeat examinations. additional and unnecessary exposure of the patient.
which of the following combinations of technical exposure factors reduce patient radiation dose?	Higher kVp, lower mAs
Reducing the field size to the anatomic features of interest not only reduces patient exposure but also..	increases completed image quality by decreasing scatter
A properly calibrated automatic exposure control (AEC) is not employed to obtain a uniform selection of technical x-ray exposure factors, well-managed imaging departments?	Make use of standardized technique charts that have been established for each x-ray unit in that facility.
Which of the following procedures results in the lowest radiation effective dose to the patient?	Dual energy X-ray absorptiometry
According to the U.S. Public Health Service, the genetically significant dose (GSD) for the population of the United States is approximately	0.20 mSv.
sensing devices most often used to measure skin dose directly.	Thermoluminescent dosimeters
Which of the following are involuntary motions that cannot be willingly controlled?	-Chills -Tremors -Muscle spasms -Pain -Active withdrawal
In standard image intensification fluoroscopy, an x-ray beam half-value-layer (HVL) of 3 to 4.5 mm aluminum is considered acceptable when kVp ranges from	80 to 100.
In digital radiography the number of different shades of gray that can be stored in memory and displayed on a computer monitor is termed	grayscale.
When generator settings are changed from one mA and time combination to another, the most that linearity can vary is	10%.
Computed radiography, because of its higher exposure latitude, makes grid use on the pediatric population	less necessary than was previously believed.
When a fluoroscopic image is electronically amplified by the use of an image intensification system, which of the following benefits results?	-Saving of time for the radiologist - Patient dose reduction
When using digital fluoroscopy systems, making use of the last image hold feature can	effective dose reduction technique.

Created by: Jjpena02

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