12. The number of rectifying circuits required in high-frequency inverter generator is: CH.1 X-Ray a 0 b. 1 c. 2 d. 3 13

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12 The Number Of Rectifying Circuits Required In High Frequency Inverter Generator Is Ch 1 X Ray A 0 B 1 C 2 D 3 13 1 (95.43 KiB) Viewed 14 times

12. The number of rectifying circuits required in high-frequency inverter generator is: CH.1 X-Ray a 0 b. 1 c. 2 d. 3 13. If a 56-kVp exposure requires 18 mAs for a proper transmitted exposure through a typical adult patient, at 70 kVp the proper mas to achieve an equal exposure is approximately: CH.1 X-Ray One fourth of the original mAs b. One third of the original mas C. One haalf of the original mas d. The same as of the original mas 14. The filtration in mammography units primarily transmits the characteristic x-rays. The very low-energy bremsstrahlung x-rays are filtered because they contribute to and the higher energy bremsstrahlung x-rays are filtered because they contribute to Tube heating, off-focus radiation a a Top view x-shift Image dete Caudal 11 Breast su receptor to lesion depth Cranial Compre paddle X-ravt b. heel effect, focal spot blooming C. radiation dose, loss of contrast d. grid cut-off, septal penetration 15. The Automatic exposure control (AEC) in Mammography is used to control the: a. X-ray scattering b. exposure c. patient movement d. X-ray filtration 16. In Mammography guided biopsy experiment with shift equals to 16 mm, the lesion position is approximately: a. 30 mm b. 35 mm C. 20 mm d. 25 mm 17. As a rule of thumb, standing 1 m from the patient, the fluoroscopist receives from scattered radiation approximately a. 1/1,00 of the exposure incident upon the patient b. 1/1,000 of the exposure incident upon the patient c. 1/1,0000 of the exposure incident upon the patient d 1/1,00000 of the exposure incident upon the patient a فاصل القسم (الصفحة التالية) - *18.Using the X-ray generator switching autotransformer shown, what is the output voltage? a. 480 volt b. 720 volt c. 120 volt d. 240 volt 1 cm 50 C D o ? *19.Using the configuration of radiography magnification shown, what is the maximum object to image distance required to not exceed an edge gradient blurring of 5 mm? a. 15 cm b. 25 cm C. 50 cm d. 75 cm