Q.1 Radiation dose of CT scan of Head and Neck is equivalent to :

A. 50 chest x-rays

B. 100 chest x-rays

C. 150 chest x-rays

D. 200 chest x-rays

Q2. How many pixels are required to resolve one line pair ?

A. 1

B. 2

C. 3

D. 4

Q3.First Direct Digital Imaging System(RVG) was introduced in the year :

A. 1980

B. 1984

C. 1988

D. 1982

Q4. Size of a Pixel in CCD is approximately:

A. 10 microns

B. 20 microns

C. 30 microns

D. 40 microns

Q5. Radiation effective dose of CBCT is:

A. 13 µSv

B. 1-8 µSv

C. 36-50 µSv

D. 5-16 µSv

Q6. Most commonly used imaging for assessment of implant:

A. Intra oral periapical radiograph

B. Lateral Cephalogram

C. Panoramic radiograph

D. Dentascan