CH-9 X-Ray Emission Test
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| A. means higher energy X-rays Shorter wavelengths and higher frequencyB. reduces scatterC. refers to the range of OD's from the whitest to the blackest part of the radiographD. The thickness of absorber or homogenous filter that will reduce an X-ray beam to half its original value or intensityE. increased X-ray beam quality or penetrating capability, hence less patient absorptionF. used to radiograph body parts that varies considerably, such asG. Controlling factor of contrast Change of approximately 4% in kVp is required to usually affect the scale of contrast in the 50 to 90 kVp rangeH. FiltrationI. long scale high kVpJ. - The penetrability or penetrating power of an X-ray beam - X-rays with high penetrability are termed high-quality or hard X-rays, and those with low penetrability are of low quality and are called soft X-rays.K. removes some scatter radiation producing radiographs of shorter scale of contrastL. - As kVp is increased, so is X-ray beam quality as well as the half-value layer. - Increased X-ray beam quality results in a more penetrating X-ray beam -kVp is the primary control of x-ray beam quality and therefore beam penetrability.M. Results in X-ray beam with higher energy Greater penetrability Higher beam quality Increased in half-value layerN. the anatomical part appears smaller than normal due to poor alignment of the anatomical part • changes in the tube angle cause elongation but never foreshorteningO. used in some CT scanners to compensate for the shaped of the head or bodyP. results in shorter scale of contrast compared with non-screenQ. the sharpness of appearance of small structures the sharpness of image detail refers to the structural lines or borders of tissues in the image and the amount of blurR. is the imperfect, unsharp shadow surrounding the distinctly sharp are of a shadow called the umbraS. Energy of motionT. Half-value layer |
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