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RADT 465: Image Eval

ARRT Registry Review Covering Image Acquisition & Evaluation

QuestionAnswer
Recorded detail is __________ related to SID. Directly (Saia, Lange Q&A, pg. 196, 233).
Grid interspace material is made of ______________ and _______ ______. Aluminum, plastic fiber (Saia, Lange Q&A, pg. 196, 233).
Decreasing field size from 14X17 inches to 8X10 inches, with no other changes, will _____________ the amount of ___________ generated within the part. Decrease, scatter (Saia, Lange Q&A, pg. 197, 234).
What is the component of a CR imaging plate that records the radiologic image? Photostimulable phosphor (Saia, Lange Q&A, pg. 197, 234).
The luminescent light emitted by the PSP is transformed into the image seen on the CRT by the ________. ADC (analog digital converter) (Saia, Lange Q&A, pg. 197, 235).
The term windowing describes the practice of changing the image ____________ and/or ___________ scale. Brightness, contrast (Saia, Lange Q&A, pg. 198, 235).
Give 3 examples of appropriate methods of minimizing motion unsharpness. Suspended respiration, short exposure time, and good patient instruction (Saia, Lange Q&A, pg. 198, 236).
Using fixed mAs and a variable kV, each centimeter increase in patient thickness requires what kV adjustment? Increase kV by 2 (Saia, Lange Q&A, pg. 199, 236).
Unopened boxes of radiographic film should be stored away from radiation and in the _________ position. Vertical (Saia, Lange Q&A, pg. 199, 236).
Compared with a low-ratio grid, a high-ratio grid will absorb more ____________ and _____________ radiation. Scattered, primary (Saia, Lange Q&A, pg. 200, 237).
As the laser beam size decreases, the CR _______________ will increase. Resolution (Saia, Lange Q&A, pg. 201, 238).
As the crystal size decrease in a ______ system, it will cause an increase in CR resolution. PSP (Saia, Lange Q&A, pg. 201, 238).
Having a patient will congestive heart failure, an ___________ in exposure factors will be required. Increase (Saia, Lange Q&A, pg. 201, 238).
Misalignment of the tube-part-IR relationship results in ____________________. Shape distortion (Saia, Lange Q&A, pg. 203, 240).
Using a short SID with a large field size is likely to ..... Increase the anode heel effect (Saia, Lange Q&A, pg. 203, 240).
The direction of electron travel in the x-ray tube is ____________ to ___________. Cathode, anode (Saia, Lange Q&A, pg. 205, 242).
For the same FOV, spatial resolution will be improved by using a __________ matrix. Larger (Saia, Lange Q&A, pg. 205, 242).
By placing the patient in a ________ position it will reduce the production of scatter. Prone (Saia, Lange Q&A, pg. 205, 242).
The technologist can reduce scatter by using the smallest possible ___________ ________. Field size (Saia, Lange Q&A, pg. 205, 242).
By using a _______ kV, you can compensate for the effect of very dissimilar tissue densities. High (Saia, Lange Q&A, pg. 205, 242).
_______ _________ is the absorption of useful radiation by a grid. Grid cutoff (Saia, Lange Q&A, pg. 206, 243).
Elongation and foreshortening are examples of _________ ____________. Shape distortion (Saia, Lange Q&A, pg. 206, 243).
During CR imaging, the latent image present on the PSP is changed to a computerized image by the _______. ADC (analog digital converter) (Saia, Lange Q&A, pg. 206, 244).
Pneumonia requires a ___________ in exposure factors. Increase (Saia, Lange Q&A, pg. 207, 245).
A 15% decrease in kV accompanied by a 50% increase in mAs will result in a ________ scale of contrast. Shorter (Saia, Lange Q&A, pg. 207, 245).
Focal spot blur is greatest toward the __________ end of the x-ray tube. Cathode (Saia, Lange Q&A, pg. 207, 246).
mAs is __________ related to patient dose. Directly (Saia, Lange Q&A, pg. 207, 246).
What is the correct order of radiographic film processing? Developer, fixer, washer, dryer (Saia, Lange Q&A, pg. 209, 247).
________________ is the reduction of x-ray photon intensities as the photons pass through materials. Attenuation (Saia, Lange Q&A, pg. 209, 248).
Diagnostic x-rays are generally associated with _________ frequency and ____________ wavelength. High, short (Saia, Lange Q&A, pg. 210, 248).
Created by: asexsonlyl