Mosby Radiology Review Questions, with Correct Solutions, A+

Density may be defined as: A. Darkness on a Radiographic Image B. A combination of contrast and recorded detail C. The light areas of a radiographic image D. Differences in dark areas on a radiographic image - Darkness on a Radiographic Image The Radiographic image is formed by: A. Exit rays striking the image receptor B. Laser light C. Cosmic rays D. Electrons and heat - Exit rays striking the image receptor The primary controlling factors of density are: A. kVp and SID B. mAs and window level C. SID and OID D. OID and FSS - mAs and window level Which of the following describes the relationship between mAs and density? A. Density is directly proportional to mAs B. Density is inversely proportional to mAs C. Density is directly proportional to mAs2 D. mAs controls the number of electrons boiled off the anode and the number of x-rays produced - Density is directly proportional to mAs The number of electrons boiled off the cathode and consequently the number of xrays produced are controlled by: A. kVp B. SID C. mAs D. OID - mAs The law stating that any combinations of mA and time that produce the same mAs value will produce the same radiographic density is the: A. inverse square law B. mAs-density law C. reciprocity law D. 15% law - reciprocity law The active portion of a CR IP is(are): A. calcium tungstate B. PSP C. Silver bromide crystals D. rare earth phosphor - PSP mAs directly controls: A. The energy of the x-ray emission spectrum B. The quality and quantity of x-rays produced at the cathode C. The quality and quantity of x-rays produced at the anode D. The quantity of x-rays produced - The quantity of x-rays produced Differences in densities on a radiograph describe: A. Density B. recorded detail C. Log relative exposure D. Contrast - Contrast The primary controlling factor(s) of contrast is(are): A. mAs, which controls the energy of the x-rays produced B. kVp, which primarily controls the quantity of x-rays produced at the target C. Focal spot size, which primarily controls the quality and quantity of x-rays produced D. kVp and Window width - kvp and window width