Question82:-Effective dose of a typical barium enema examination in mSv is
‏3-:ھ‎
‎8:-5
‎"67
‎D:-9
‎Correct Answer:- Option-C
Question83:-Advantages of thermoluminescent dosimeters are all except
A:-They can be reused
B:-They can be used to measure both shallow and deep doses
C:-They can be used to monitor eye doses
D:-They can measure dose rates
Correct Answer:- Option-D
Question84:-Which of the following statement is true regarding the grid ?
i. Interspace is filled with Aluminium
ii. Interspaces are usually thicker than the lead strips
iii. The grid ration is the ratio between the height of lead strips and the distance between them
iv. Reduces the scatter dose to the patient

A:-Only i is correct

B:-i and ii are correct

C:-i, ii and iii are correct

D:-All are correct

Correct Answer:- Option-C
Question85:-Effective focal spot is influenced by

A:-Target angle

B:-Target size

C:-Filament angle

D:-All of the above

Correct Answer:- Option-A

Question86:-The technique of radiography in which the part to be visualized remains stationary during exposure while
overlying structures produce unsharp images due to its motion is called

A:-Computed tomography
:-Autotomography
C:-Orthopantamography
D:-Stationary radiography
Correct Answer:- Option-B
Question87:-Which of the following statement is true ?
A:-Optimisation is benefit vs risk determination
B:-Justification is benefit vs risk determination
C:-A pregnant patient can not have radionuclide imaging
D:-Lead apron used in intervention radiology is 0.35 mm lead equivalent
Correct Answer:- Option-B
Question88:-Scattered radiation reaching the film can be reduced by which of the following ?
i. A high tube kV
ii. A moving grid
iii, Using tubes with high heat rating
iv. Using cones and cylinders
A:-i and iii
and iv
C:-All of the above
D:-None of the above
Correct Answer:- Option-B
Question89:-Advantage of high kV radiography is
A:-Scattered radiation is increased
B:-Greater exposure latitude
C:-Increasing the electrical loading of X-ray tube
D:-Radiation dose to the patient is reduced
Correct Answer:- Option-D
Question90:-Advantages of compressing the breast tissue in mammography is all except
A:-It reduces the total volume of breast
B:-It reduces the proportion of scattered radiation reaching the breast