ARRT- Mock Exam Top latest complete solution

The brightness gained by an image intensification tube is the product of which of the following? A. Minification gain times tube distance B. Minification gain times flux gain C. Flux gain times mA D. mA time’s kVp time’s tube-to-table distance - B (Minification gain is a result of the focusing of the electron beam to a smaller output phosphor. Flux gain is the result of accelerating the electron beam through a series of electrostatic lens. Multiply the two together to get the brightness gained.) This AP radiograph of the hip was done using automatic exposure control (AEC). What could have made it come out underexposed? A. mA set too low B. Small focal spot used C. Back-up time too short D. kVp too high - C (AEC is designed to reproduce a predetermined density. Changing mA, kVp and focal spot size should still produce the correct density. However, if the back-up time is too short, it will terminate the exposure before the ionization device does.) The skull and spine make up which of the following? A. True skeleton B. Bony skeleton C. Axial skeleton D. Appendicular skeleton - C (The limbs, shoulder girdle, and pelvic girdle make up the appendicular skeleton) During retrograde urography contrast media is administered in which of the following ways? A. Intravenously B. Via a cystoscope C. Via a ureteral catheter D. Intramuscularly - C (Retrograde means backwards, or against the flow. During a retrograde urography examination, the urologist use a cystoscope to view the bladder and then places one or two ureteral catheters into the ureter(s) and injects contrast media backwards into the renal pelvis.) With digital imaging, radiographers can avoid the possibility of repeats by overexposing the patient. This practice is referred to as: A. digital danger. B. patient indexing. C. exposure creep. D. x ray over-load. . - C (Overexposing patients is a problem with digital radiography because it often goes unnoticed if the exposure indicator numbers are not being monitored) The margin of error a radiographer has in setting his/her technical factors and still obtaining a diagnostic quality image is known as what? A. Luck B. Technical margin C. Exposure latitude D. Error area - C (Exposure latitude is the range of technical factor settings that will produce a diagnostic quality radiograph. For example, if 40 mAs will produce a perfect density, anything between 30 mAs - 50 mAs will produce a diagnostic quality image. This 20 mAs range is the margin of error or exposure latitude.)