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Stack #4655510

QuestionAnswer
While standing behind the control-booth barrier, a radiographer makes a radiographic exposure. The x-rays scattered from the patient’s body should ____________________. scatter a minimum of 2 times before reaching any area behind the control-booth barrier.
To ensure that the lifetime risk of occupationally exposed persons remains acceptable, an additional recommendation is that the lifetime effective dose in mSv should not exceed 10 times the occupationally exposed person’s age in years.
_______________ is essentially the radiation output weighted time that the unit is actually delivering radiation during the week. Workload
Which of the following adjustments in technical exposure factors decreases the production of scattered radiation during routine radiographic procedures? Increase kVp and decrease mAs in compensation
If the peak energy of the x-ray beam is 100 kVp, a protective lead apron must be the equivalent to at least which of the following measures? 0.25-mm thickness of lead
Compared to general diagnostic radiography performed in an x-ray room, imaging personnel receive the highest occupational exposure during which of the following procedures? All of the options
For C-arm devices with similar fields of view, the dose rate to personnel located within a meter of the patient is ____________ the dose rate to personnel from ______________. comparable to; routine fluoroscopy.
Which of the following procedures results in the lowest radiation effective dose to the patient? Dual energy X-ray absorptiometry
Because multiple bony areas span the entire body, the radiation dose absorbed by the organ called bone marrow cannot be measured by a direct method; it can only be estimated.
According to the American College of Radiology (ACR), abdominal radiologic examinations that have been requested after full consideration of the clinical status of a patient, including the possibility of pregnancy, need not be postponed or selectively scheduled.
Reducing the field size to the anatomic features of interest not only reduces patient exposure but also increases completed image quality by decreasing scatter.
When 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.
In the event that a pregnant patient is inadvertently irradiated the radiation safety officer or the medical physicist should perform the calculations necessary to determine fetal dose.
________________________ are the sensing devices most often used to measure skin dose directly. Thermoluminescent dosimeters
During a radiographic examination, which of the following combinations of technical exposure factors reduce patient radiation dose? Higher kVp, lower mAs
Created by: bighunt
 

 



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