Oral Radiology....1

1. Father of radiology?

Carlson

Roentgen

Smith

Nuggler

2. In characteristic radiation ?

Atom is unionized

Atom is ionized

No effect

None

3. Target Anode is made up of?

Molybdenum

Copper

Tungston

None

4. Tungston target is embedded in ?

Molybdenum

Copper

Chromium

Any

5. Cells with least metabolic activity?

Most sensitive to radiation

Least sensitive to radiation

No sensitivity

None

6. Dental X rays beams are usually collimated to a circle of ?

1 inch

2.75 inches

4 inches

Any

7. Increased Kvp leads to?

Increased contrast

Decreased contrast

No effect on contrast

None

8. Least sensitive to radiation?

Bone marrow

Endocrine glands

Nerve tissue

All

9. Long cone open cylinder technique is used as adjunct parelleling technique to?

To prevent distortion of image

To prevent elongation of image

To prevent shortening of image

None

10. Which scattering produces more film fog?

Thompson scattering

Photoelectric effect

Compton effect

Coherent scattering

11. All or none effect is related to?

Chronic effect

Deterministic effect

Somatic effect

Stochastic effect

12. Which of the fillowing increases radiation exposure?

High KVP

Low KVP

High speed film

All

13. Which one is more ionizing?

X ray

Beta ray

Alpha ray

Gamma ray

14. X rays produced mainly due to?

Bremsstrahlung radiation

Characteristic radiation

Both

None

15. Which leads to reduced patient exposure?

Increased mA

Increased Kvp

Use of grids

All

16. Radiation dose if 7-15 GY cause?

Prodrimal symptoms

Mild hematopoietic systems

Gastrointestinal symptoms

All

17. Inherent character of X ray film are?

Defenition contrast and resolution

Defenition density resolution

Defenition,contrast density

All

18. Total filtration for 70Kvp is? ?

2.5 mm

1.5 mm

1mm

2 mm

19. Compared to round collimator rectangular collimator reduces exposure?

15%

30%

60%

45%

20. Mean exposure of radiation from OPG ?

80mR

90mR

100mR

300 mR

Oral Radiology....1

1. Father of radiology?

2.

What first name or nickname would you like us to use?

2. In characteristic radiation ?

3. Target Anode is made up of?

4. Tungston target is embedded in ?

5. Cells with least metabolic activity?

6. Dental X rays beams are usually collimated to a circle of ?

7. Increased Kvp leads to?

8. Least sensitive to radiation?

9. Long cone open cylinder technique is used as adjunct parelleling technique to?

10. Which scattering produces more film fog?

11. All or none effect is related to?

12. Which of the fillowing increases radiation exposure?

13. Which one is more ionizing?

14. X rays produced mainly due to?

15. Which leads to reduced patient exposure?

16. Radiation dose if 7-15 GY cause?

17. Inherent character of X ray film are?

18. Total filtration for 70Kvp is? ?

19. Compared to round collimator rectangular collimator reduces exposure?

20. Mean exposure of radiation from OPG ?