Radiation Biology And Physics → Radiations→ Dentist

01-Which of the following can be diagnosed by radiograph alone?

Periodontal pocket

Periodontal Abscess

Anatomical root length

Bifurcation involvment

Correct! Wrong!

02-Digital radiography differs from conventional in:

X-rays not used

Rays other than X-rays are used

Radiation receptors are different

No hard copy is formed

Correct! Wrong!

03-The percentage of magnification acceptable in normal Cephalogram is?

3-4

5-7

8-10

7-12

Correct! Wrong!

04-In radionucleide imaging the most useful radiopharmaceutical for skeletal imaging is:

Gallium 67 (67Ga)

Technetium-sulphur colloid (99mTC-SC)

Technetium (99m TC)

Technetium-99m linked to Methylene disphosphonate (99m Tc-MDP)

Correct! Wrong!

05-All of the following are true about radiovisiography except?

It reduces x-ray exposure by 80%

It gives more fine detail than the silver halide crystal X-ray film

Instant image

Easy storage and retrieval

Correct! Wrong!

06-The maximum penetration among the following is seen with which ray:

Alpha

Beta

Gamma

Electron beam

Correct! Wrong!

07-What contrast is needed for proper radiographic image in a heavy bony built person:

Increase in MA

Increase in kVp

Increase exposure time

Increased developing time

Correct! Wrong!

08-The principal reason for placing an aluminum filter in the primary beam of radiation is to:

Reduce exposure time

Reduce the development time of films

Reduce radiation to the skin of patient

Obtain greater definition of images of teeth

Correct! Wrong!

09-In the following illustration of a radiograph, facial and lingual object (. and ) are super imposed. when the central ray is directed from farther posteriorly, the radiograph appears as follows which of the following statements about the location of the objects are true: A The object is located lingually B The object is located facially C The object is located lingually D The * object is located facially

a & c

a & d

b & c

b & d

Correct! Wrong!

10-A patient with a history of radiation therapy requires special consideration because:

The vascularity of bone may be disrupted

Salivary function may be disrupted

Plaque accumulation greater than normal can be expected

The potential for periodontal disease is greatly increased

Correct! Wrong!

Radiation Biology And Physics

01-Which of the following can be diagnosed by radiograph alone?

02-Digital radiography differs from conventional in:

03-The percentage of magnification acceptable in normal Cephalogram is?

04-In radionucleide imaging the most useful radiopharmaceutical for skeletal imaging is:

05-All of the following are true about radiovisiography except?

06-The maximum penetration among the following is seen with which ray:

07-What contrast is needed for proper radiographic image in a heavy bony built person:

08-The principal reason for placing an aluminum filter in the primary beam of radiation is to:

10-A patient with a history of radiation therapy requires special consideration because:

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Radiation Biology And Physics

01-Which of the following can be diagnosed by radiograph alone?

02-Digital radiography differs from conventional in:

03-The percentage of magnification acceptable in normal Cephalogram is?

04-In radionucleide imaging the most useful radiopharmaceutical for skeletal imaging is:

05-All of the following are true about radiovisiography except?

06-The maximum penetration among the following is seen with which ray:

07-What contrast is needed for proper radiographic image in a heavy bony built person:

08-The principal reason for placing an aluminum filter in the primary beam of radiation is to:

10-A patient with a history of radiation therapy requires special consideration because:

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