Oral Radiology

Question 1

Question 2

Which of the following has the shortest wavelength (highest energy)?

A. X-rays

B. Infrared

C. UV

D. Gamma

E. Microwave

***GOT A PRACTICE Q***

Answer 2

D. Gamma

Question 3

Which of the following are examples of particles from radioactive decay?

(Select all that apply)

A. alpha particles

B. beta particles

C. gamma particles

D. delta particles

Answer 3

A. alpha particles

B. beta particles

Question 4

Which of the following is the Primary source of X-ray photons?

A. Bremsstrahlung

B. Characteristic

Answer 4

A. Bremsstrahlung

Question 5

Which of the following generates a continuous spectrum of energy?

A. Bremsstrahlung

B. Characteristic

Answer 5

A. Bremsstrahlung

Question 6

Which of the following emits a photon of specific energy?

A. Bremsstrahlung

B. Characteristic

Answer 6

B. Characteristic

Question 7

Which of the following converts produces photons?

A. Cathode (-)

B. Anode (+)

Answer 7

B. Anode

Question 8

Which of the following converts produces electrons?

A. Cathode (-)

B. Anode (+)

***GOT A PRACTICE Q***

Answer 8

A. Cathode (-)

Question 9

Which of the following components of the X-ray tube provides filtration?

A. Cathode

B. Glass

C. Aluminum

D. Lead

Answer 9

C. Aluminum

Glass = insulation

Aluminum = filtration

Lead = collimation

Question 10

Which of the following components of the X-ray tube provides insulation?

A. Cathode

B. Glass

C. Aluminum

D. Lead

Answer 10

B. Glass

Question 11

Which of the following components of the X-ray tube provides collimation?

A. Cathode

B. Glass

C. Aluminum

D. Lead

Answer 11

D. Lead

Question 12

Which of the following is responsible for the Contrast of a radiograph?

A. Intensity

B. Energy

Answer 12

B. Energy

Question 13

Which of the following is responsible for the Density (darkness) of a radiograph?

A. Intensity

B. Energy

Answer 13

A. Intensity

hint: density and intensity rhyme

Question 14

Which of the following is the setting of an X-ray machine that is most frequently changed?

A. Exposure time

B. Tube Current

C. Tube potential

D. Filtration

E. Collimation

***BOARDS***

Answer 14

A. Exposure time

Question 15

Which of the following affects BOTH intestity and energy?

A. Exposure time

B. Tube Current

C. Tube potential

D. Filtration

E. Collimation

Answer 15

C. Tube potential

Question 16

Answer 16

Question 17

The greatest decrease in radiation to a patient is achieved by ________.

A. Exposure time

B. Tube Current

C. Tube potential

D. Filtration

E. Collimation

***BOARDS***

Answer 17

E. Collimation

Question 18

The greatest decrease in radiation to a patient is achieved by ________.

A. Exposure time

B. Tube Current

C. Rectangular collimation

D. Filtration

E. Circular collimation

***BOARDS***

Answer 18

C. Rectangular collimation

Question 19

Answer 19

Question 20

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Question 21

_______ is the shadow behind an image.

A. Umbra

B. Penumbra

Answer 21

A. Umbra

Umbra = shadow behind image

Penumbra = side shadow

Question 22

Answer 22

Question 23

Answer 23

Question 24

Cells that are more _____ are more radiosensitive.

***BOARDS***

Answer 24

Mitotically active

Cells that are highly metabolically active / radiosensitive = sperm cells, GI cells, skin cells (epithelial cells) and bone marrow (hematopoietic cells)

Question 25

Which of the following is the most radiosensitive? (select all that apply) A. Nerve cells B. Heamtopoietic cells C. Muscle cells D. Epithelial cells **\*\*\*BOARDS\*\*\***

Answer 25

B. Heamtopoietic cells D. Epithelial cells

Question 26

What do each of the following acronyms stand for in regards to radiology? * **ALARA** * **ALADA**

Answer 26

Question 27

Question 28

The _____ is what converts the invisible image to a visible image in regards to radiography.

Answer 28

**The developer solution** **"if the final image is coming out really light, chances are that your developer solution isn't doing its job properly (its probably old and needs to be replaced)"**

Question 29

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Question 30

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Question 31

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Question 32

Which of the following is the best film to visualize **condyles**? A. Cephalometic B. Cone Beam Computed Tomography (CBCT) C. Water's View D. Towne's View E. Submentovertex View **\*\*\*BOARDS\*\*\***

Answer 32

D. Towne's View

Question 33

Which of the following is the best film to visualize **paranasal sinuses**? A. Cephalometic B. Cone Beam Computed Tomography (CBCT) C. Water's View D. Towne's View E. Submentovertex View **\*\*\*BOARDS\*\*\***

Answer 33

C. Water's View

Question 34

Which of the following is the best film to visualize **implant planning**? A. Cephalometic B. Cone Beam Computed Tomography (CBCT) C. Water's View D. Towne's View E. Submentovertex View **\*\*\*BOARDS\*\*\***

Answer 34

B. Cone Beam Computed Tomography (CBCT)

Question 35

Which of the following is the best film to visualize basilar skull and zygomatic **fractures**? A. Cephalometic B. Cone Beam Computed Tomography (CBCT) C. Water's View D. Towne's View E. Submentovertex View **\*\*\*BOARDS\*\*\***

Answer 35

E. Submentovertex View

Question 36

Which of the following is the best film to visualize **Assymetry**? A. Lateral Cephalometric B. Cone Beam Computed Tomography (CBCT) C. Posterior-Anterior Cephalometric D. Towne's View E. Submentovertex View

Answer 36

C. Posterior-Anterior Cephalometric

Question 37

Which of the following is the best film to visualize the relationship of **teeth and jaws**? A. Lateral Cephalometric B. Cone Beam Computed Tomography (CBCT) C. Posterior-Anterior Cephalometric D. Towne's View E. Submentovertex View

Answer 37

A. Lateral Cephalometric

Question 38

Which of the following is the most common radiographic error? A. Elongation B. Cone cut C. Underexposed D. Overexposed E. Double exposure

Answer 38

**A. Elongation**

Question 39

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