Radiographic Interp. 14 (Specialized Imaging)

Front 1

MRI stands for what?

Back 1

magnetic resonance imaging

Front 2

Conventional tomography is also called __ __ radiography

Back 2

body section

Front 3

True or False, cross sectional imaging allows viewing of an object without overlapping of structures

Back 3

True

Front 4

In conventional tomography, objects outside the place of interest appear how?

Back 4

blurred out

Front 5

What two things are commonly analyzed with conventional tomography in the mouth?

Back 5

TMJ and a section of bone for implant analysis

Front 6

In conventional tomography, the tube and film move in (the same/opposite) directions

Back 6

opposite

Front 7

The thickness of tissue in the focal plane is called ___

Back 7

tomographic layer

Front 8

T or F, panoramic technique is a form of tomography

Back 8

T

Front 9

Looking at the TMJ from the side is in the ___ plane

Back 9

sagittal

Front 10

Looking at the TMJ from the front of a patient's face is called a ___ plane

Back 10

coronal

Front 11

True or False, tomographs tend to be 99% stable with magnification

Back 11

False, they will magnify an object

Front 12

Which has a higher radiation dose, panos or tomography?

Back 12

tomography

Front 13

A patient with gagging problems would be (super pissed/probably fine) with a tomograph

Back 13

probably fine

Front 14

Which has higher radiation, tomography or medical CT?

Back 14

medical CT

Front 15

Tomography is (hard/easy) to use

Back 15

easy

Front 16

If you inject contrast material into the TMJ and view it with tomography, you are performing a TMJ ____

Back 16

arthrography

Front 17

What might you use a TMJ arthrography for?

Back 17

disk position assessment, morphology, document something prior to surgery

Front 18

True or False, TMJ arthrography is minimally invasive

Back 18

false, very invasive

Front 19

A CT will take cross sectional data and then do what with it?

Back 19

reconstruct it

Front 20

T or F, with CT technology, x-rays are used just like any conventional intraoral or extraoral radiographic technique

Back 20

T

Front 21

Computed Tomography uses (a single shot/many rotations) to capture an image

Back 21

many rotations

Front 22

Computed Tomography have (higher/lower) radiation than conventional tomography

Back 22

higher

Front 23

Other than cost and radiation dose, what is the other main disadvantage of computed tomography?

Back 23

streak artifacts from metals

Front 24

Computed tomography produces (2/3) dimensional images

Back 24

3

Front 25

True or False, computed tomography shows harsh superimposition of structures

Back 25

False, none!

Front 26

What do CBCT and CBVT stand for?

Back 26

cone bean computed tomography

cone beam volumetric tomography

Front 27

CBCT uses how many 360degree rotations around the patient's head?

Back 27

1

Front 28

In a CBCT, the beam is shaped like what object?

Back 28

cone

Front 29

CBCT is limited to what region of the head?

Back 29

maxillofacial

Front 30

True or False, in most machines, the scan time for CBCT is 40 sec or less

Back 30

True

Front 31

CBCT allows for 2 and 3-D, T or F?

Back 31

T

Front 32

Compared to medical CT, a CBCT has (higher/lower) cost and radiation dosage

Back 32

lower

Front 33

CBCT only works on head and neck, T or F?

Back 33

T

Front 34

MRIs give (good/poor) soft tissue contrast

Back 34

good

Front 35

What types of waves are used in an MRI?

Back 35

radiowaves

Front 36

Which of these cannot be taken into an MRI room?

A. cotton shirt
B. cardiac pacemaker
C. credit cards
D. plastic GI Joe toys
E. watches

Back 36

B C and E cannot be taken in

Front 37

Which is best for soft tissue eval of the disk?

A. Conventional tomography
B. MRI
C. CBCT

Back 37

MRI

Front 38

What system uses vibration frequencies in the range of 1 to 20 MHz?

Back 38

ultrasonography or sonography

Front 39

The transducer in ultrasonography is made of ___ crystal

Back 39

piezoelectric

Front 40

What does the transducer do in ultrasonography?

Back 40

converts electrical impulses to high-frequency sounds waves

Front 41

True or False, human disease can exist without any specific anatomical change

Back 41

True

Front 42

What is the only means of assessing physical changes that are a direct results of biochemical alterations?

Back 42

nuclear medicine

Front 43

What are the radioactive materials that are injected into a patient called?

Back 43

radiotracers (or radionuclide-labeled tracers)

Front 44

signals from patient are recorded with ___ cameras in nuclear medicine

Back 44

gamma

Front 45

This is a cross section through what structure?

Back 45

TMJ

Front 46

This is a cross section through what structure?

Back 46

Jaw at location of a tooth of interest

Front 47

What view is this?

Back 47

Sagittal

Front 48

These cross sections are in the ___ view

Back 48

buccal-lingual

Front 49

Which image is sagittal and which is coronal?

Back 49

left, sagittal

right, coronal

Front 50

Is this patient's mouth open or closed?

Back 50

closed

Front 51

Is this patient's mouth open or closed?

Back 51

open

Front 52

What is wrong with this TMJ?

Back 52

the condylar head has degenerated a bit

Front 53

True or False, this condylar head appears too flat and thus is not normal

Back 53

True

Front 54

The RO fluid is contrast media, used in a TMJ ____

Back 54

arthrography

Front 55

This image was taken with what technology?

Back 55

Computed Tomography

Front 56

What view is this?

Back 56

coronal

Front 57

What view is this?

Back 57

sagittal

Front 58

What view is this?

Back 58

coronal

Front 59

This image was taken with what technology?

Back 59

MRI

Front 60

This image was taken with what technology?

Back 60

Ultrasonography

Front 61

This image is generated using what technique?

Back 61

nuclear medicine