Radiology 2 and 3 part 2

Question 1

Enamel

Answer 1

outer covering the crown

Question 2

Apical

Answer 2

Toward the tip of the root tooth

Question 3

Rostral

Answer 3

towards the nose

Question 4

Caudal

Answer 4

towards the rear

Question 5

Coronal

Answer 5

Toward the tip of the crown

Question 6

Cementum

Answer 6

outer covering of the root

Question 7

Buccal

Answer 7

The cheek

Question 8

Labial

Answer 8

the lip

Question 9

Lingual

Answer 9

the tongue

Question 10

What is the dental formula for the adult cat

Answer 10

2x (I3/3, C1/1, P3/2, M1/1) =30 teeth

Question 11

What is the dental formula for the adult dog

Answer 11

2X (I3/3, C1/1, P4/4, M2/3) =42 teeth

Question 12

What is the parallel technique and for what teeth is it used?

Answer 12

The parallel technique = placing the dental film directly behind and parallel to the tooth and then directing the x-ray beam perpendicular to the film.
including the mandibular third premolars (3P3 or 307/407)

Question 13

Describe the bisecting angle technique. What artifacts do we see when the x-ray beam is not aimed at the bisecting angle?

Answer 13

to split the difference between pointing the beam at the tooth angle and the film angle. Simply speaking, the bisecting angle is aiming the cone halfway between the tooth and film.

We may see elongation or foreshortening with improper angle.

Question 14

What is SLOB an abbreviation for and for what tooth is this rule utilized?

Answer 14

SLOB- Same lingual, opposite buccal. It is used for the maxillary fourth premolar to distinguish the roots.

Question 15

SLOB-

Answer 15

Same lingual, opposite buccal.

Question 16

Echogenicity

Answer 16

Appearance of tissues on ultrasound

Question 17

Hyperechoic

Answer 17

brighter because increased wave reflections

Question 18

Anechoic

Answer 18

lacking echos

Question 19

Hypoechoic

Answer 19

darker fewer soundwaves

Question 20

Isoechoic

Answer 20

two tissues the same echosity

Question 21

What is attenuation?

Answer 21

Loss of sound wave energy as it traverses the tissue or the medium due to absorption, reflection, or scattering.

Question 22

List at least 3 benefits to using ultrasonography for imaging.

Answer 22

Non-invasive, no radiation, real-time imaging.

Question 23

Describe how ultrasound works from the ultrasound probe through to the image on the computer screen.

Answer 23

Transducer sends sound, echoes return, computer makes image.

Question 24

What are the differences between B mode, M mode, and doppler?

Answer 24

B” represents brightness.

M” is interpreted as motion.

Doppler is used to image the flow of blood and other liquids while measuring their velocity.

Question 25

When performing a cardiac examination, what would be the ideal transducer to choose?

Answer 25

A phased sector array probe

Question 26

For CT scanning, what is the difference with conventional scanning vs helical scanning?

Answer 26

Conventional – Slices one by one Helical – Continuous spiral scan

Question 27

All of the following that utilize ionizing radiation

Answer 27

Dental radiography Computerized tomography Abdominal x-rays PET with CT

Question 28

What considerations need to be made before entering the MRI room?

Answer 28

Remove metal, check implants, use safe equipment.

Question 29

How in simple basic description, does the MRI work?

Answer 29

Magnet aligns atoms, signals create image.

Question 30

Which of the following is a true statement?

Answer 30

CT and MRI require anesthesia

Question 31

Why might contrast be utilized for CT or MRI scans?

Answer 31

To highlight infection, tumors, or vascular disease.