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Roentgen discovered x-rays while working with a _____ tube? Crookes An "electron cloud" surrounding the filament of the cathode is referred to as a Space charge Free electrons of X-ray production come from the Filament The creation of the space charge in the X-ray tube produces: thermionic emission The majority of photons in the X-ray beam are created by which process? Bremsstrahlung interactions More than 99% of the energy of the electron stream is converted into: heat the h...

What is angiography? A. radiographic exam of veins B. radiographic exam of arteries C. radiographic exam of vessels D. the study of vascular flow patterns Answer : C What term describes a guide wire in which position of the inside portion can be varied? A. J guide wire B. straight guide wire C. fixed core D. moveable core D How is the measurement of the flow rate of an automatic contrast injector determined? A. contrast amount delivered per time B. Heating device C. contrast vo...

C Radiographs are property of the: a) radiologist b) patient c) health care institution d) referring physician A A patient who is diaphoretic has: a) pale, cool clammy skin b) hot, dry skin c) dilated pupils d) warm, moist skin D Which of the following must be included in the patient's medical record or chart? 1. diagnostic and therapeutic orders 2. medical history 3. informed consent a) 1 and 2 b) 1 and 3 c) 2 and 3 d) 1, 2, and 3 B When a patient with an arm in...

When performing the lateral humerus with the mediolateral projection, which of the following does not apply? 1. position patient with back toward IR 2. oblique the patient 20 to 30 degree, to bring the humerus in contact with IR 3. center the CR midpoint of humerus 4. flex elbow to position epicondyles perpendicular to IR. position the patient with back toward the IR. (they will be facing the IR and obliqued 20 to 30 degrees from PA) Proper positioning for the lateral calcaneus will r...

This is the period of acute radiation syndrome (ARS) that is characterized by the full onsent of systematic illness? Manifest phase How far should the top IR be placed above the level of the shoulders for an AP Humerus Image? 1 1/2 Inches What is the largest carpal bone? Capitate A grid designed such that the angle of lead strips align with the divergence of the beam is called a: Focused Grid Resistance is measured in kilowatts: False What is the central ray position for an AP obl...

Elongation (body part appears longer than normal) is caused by angulation along the ________ axis of the part being imaged. - Long Foreshortening (body part appears shorter than normal) is caused by angulation against the ________ axis of the part being imaged. - Main Grids are constructed of ________ strips separated by ________ interspacers. - 1) Lead 2) Aluminum The height of the lead strips divided by the distance between the lead strips is known as: - Grid Ratio Grid Ratio Form...

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