Question78:-Which technology is used in Linear accelerator to accelerate electrons ?
A:-Laser
B:-Electric current
C:-Magnet
D:-Microwave
Correct Answer:- Option-D
Question79:-What percentage of X-ray beam is contributed by characteristic radiation ?
A:-30 - 48
B:-10 - 28
08-15
D:-55 - 65
Correct Answer:- Option-B
Question80:-Which is the type of interaction between X-rays and matter that do not produce ionisation ?
A:-Pair production
B:-Photoelectric effect
C:-Coherent scattering
D:-Compton scattering
Correct Answer:- Option-C
Question81:-Among the following, which is NOT the end product of photoelectric effect ?
A:-Photo electron
B:-Characteristic radiation
C:-Positive ion
D:-Proton
Correct Answer:- Option-D
Question82:-One gray is___rads.
A:-1000
B:-10000
C:-10
D:-100
Correct Answer:- Option-D
Question83:-Permanent sterility for men occur at what range of exposure to radiation ?
A:-9 - 10 GY
B:-10 - 15 GY
C:-5 - 8 GY
D:-15 - 20 GY
Correct Answer:- Option-A
Question84:-To provide adequate radiation protection what should be he thickness of the wall of X-ray room ?
A:-25 cm brick with plaster
B:-15 cm brick with plaster
C:-10 cm concrete
D:-4 mm lead equivalent
Correct Answer:- Option-A
Question85:-All of the following are MR angiography techniques EXCEPT
A:-Time of flight
B:-Diffusion
C:-Phase contrast
D:-Contrast enhanced MRI
Correct Answer:- Option-B
Question86:-MCU is an investigation for visualisation of
A:-Uterus and fallopian tubes
B:-Bladder and urethra
:-Oesophagus
D:-Kidneys and ureter
Correct Answer:- Option-B
Question87:-In double contrast barium enema when will be introduce air
A:-When barium column reaches rectum
B:-When barium column reaches hepatic flexure
C:-When barium column reaches splenic flexure
D:-When barium column reaches ascending colon