front 1 List the four primary image quality factors | back 1 Density Contrast Detail Distortion |
front 2 The amount of blackness on a processed radiograph is called | back 2 Density |
front 3 What exposure factor primarily controls radiographic density | back 3 mAs |
front 4 True/False For an underexposed radiograph, the mAs must be increased by a factor of four to produce a visible change in radiographic density. | back 4 False |
front 5 A radiograph of the knee reveals that it is overexposed and must be repeated. The original technique used was 10 mAs. What change will improve the image during the repeat exposure? | back 5 Decrease to 5 mAs |
front 6 The primary controlling factor for radiographic contrast is: | back 6 kV |
front 7 Low contrast gives | back 7 long scale (110 kV, 10 mAs) |
front 8 High contrast gives | back 8 short-scale (50 kV, 800 mAs) |
front 9 True /False kV is a secondary controlling factor for radiographic density. | back 9 True |
front 10 True/False A low kV technique (50 kV) produces a long-scale contrast. | back 10 False |
front 11 A radiograph of the elbow reveals that it is over exposed. The technologist wants to adjust kV rather than mAs for the repeat exposure. This is contrary to common practice. The original analog exposure factors were 70 kV and 5 mAs. What new kV setting would reduce radiographic density by one-half? | back 11 60 kV and 5 mAs |
front 12 What techniques or devices will reduce the amount of scatter radiation striking the IR? | back 12 Collimnation Grids Lower kV |
front 13 True/False Recorded detail or spacial resolution is optimal with a long object image receptor distance (OID) and a short SID. | back 13 False |
front 14 What best controls involuntary cardiac motion artifact? | back 14 shortening the exposure time |
front 15 What spacial resolution factors increase resolution and geometric sharpness? | back 15 small focal spot increase in SID decrease in OID |
front 16 Rather than rely on the anode heel effect, what can be used to equalize density of specific anatomy? | back 16 Compensating filter |
front 17 Which type of compensating filter is recommended for an AP projection of the shoulder? | back 17 boomerang |
front 18 which type of compensation filter is recommended for an axiolateral hip projection? | back 18 wedge |
front 19 which type of grid cutoff is created if the CR and the face of the grid are not perpendicular to each other? | back 19 off-level |
front 20 which of the following projections require the use of a grid? PA Hand AP Abdomen Axial calcaneus (heel) AP Elbow | back 20 AP Abdomen |
front 21 The misrepresentation of an object's size or shape projected on a radiograph is called: | back 21 Distortion |
front 22 To minimize radiographic distortion how should SID and OID be manipulated? | back 22 Greater SID and shorter OID |
front 23 True/False: To best use the anode heel effect, the thinner aspect of the anatomic part should be placed under the cathode aspect of the x-ray tube. | back 23 False |
front 24 The best method to reduce distortion of the joints of the hand is to keep the fingers __________ to the IR. | back 24 Parallel |
front 25 Which of the following factors affects spatial resolution to the greatest degree? Use of a grid kV Focal spot size mAs | back 25 Focal spot size |