Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Radiology > Final Revision > Flashcards

Final Revision Flashcards

(82 cards)

Start Studying
1
Q

Dental Radiography shows:

a. soft tissues
b. hard tissues

A

b. hard tissues

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

BTW is best used for?

A

interproximal caries and bone loss

you CANT see sinus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Best radiograph for fine details is?

A

BTW

-perpendicular to the teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Radiopaque means:

a. dark
b. white

A

b. white

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Radiolucent means:

A

a. dark

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

To identify what kind of periapical radiograph you need to see:

A

which teeth are in the center of the xray

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which of these are radiopaque features?

a. metallic restoration
b. pulp
c. caries
d. LD
e. bone
f. granuloma
g. cyst/tumor
h. lesion
i. AMG
j. enamel
k. cervical burnout
l. mandibular canal
m. dentin
n. RCT
o. periodontal ligament
p. composite
q. foramen

A

a. metallic restoration
e. bone
i. AMG
j. enamel
n. RCT
p. composite
m. dentin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Which of these are radiolucent features?

a. metallic restoration
b. pulp
c. caries
d. LD
e. bone
f. granuloma
g. cyst/tumor
h. lesion
i. AMG
j. enamel
k. cervical burnout
l. mandibular canal
m. dentin
n. RCT
o. periodontal ligament
p. composite
q. foramen

A

b. pulp
c. caries
d. LD
f. granuloma
g. cyst/tumor
h. lesion
k. cervical burnout
l. mandibular canal
o. periodontal ligament
q. foramen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What happens with excessive vertical angulation?

A

shortened image

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What happens with insufficient vertical angulation?

A

elongation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What happens with wrong horizontal angulation?

A

proximal contacts overlap, cone cutting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How to ensure correct vertical angulation?

A

up and down movement of PID

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How deep is normal alveolar crest form DEJ?

A

less than 1.5 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Radiographs can show:

a. thickness of bone
b. depth of bone
c. position of bone

A

c. position of bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What does MRI show?

A

soft tissues,TMJ disorders, salivary gland disease/tumor, metastatic diseases, oral cancer diagnosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What does CBCT show?

A

bone detail, tumor, cysts, joint deficciency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What does CT show?

A

bone detail

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Which cystic lesion is confused with benign odontogenic tumor?

A

Odontogenic Keratocyst (OKC) with Ameloblastoma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Which muscle is attached to external oblique ridge?

A

buccinator muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Which muscle is attached to internal oblique ridge?

A

mylohyoid muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Which are the peculiarities of panoramic radiography?

A
  1. structures are flattened and spread out
  2. real and ghost images -produced by panoramic structures
  3. single and double real images -produced by midline structures
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Can we see temporal process on periapical xray?

A

no only on panoramic xray

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Where can we find hamular notch?

A

between maxillary tuberosity and pterygoid plate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What are the EARLY bone changes?

A
  • crest looses cortication
  • crest fuzzy appearcance
  • crest blunts in anterior teeth
  • 1-3 mm bone loss
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What are the MODERATE bone changes?
- horizontal bone loss - vertical bone loss - osseus defects - 3-5 mm bone loss
26
What are the ADVANCED bone changes?
- furcation involvement - large bony defects - periodontal abscess - bone loss > 5 mm
27
What is caries?
=bacterial disease in mouth
28
Which is the most common bacteria?
S mutans
29
What is plaque?
=a layer of bacteria and saliva
30
Decalcifying area on tooth looks like: a. white b. dark
a. white
31
Xrays are observed better: a. enamel b. dentin c. pulp chamber
a. enamel dentin less pulp chamber even less
32
You can see on x-ray: a. plaque b. caries c. calculus
b. caries | c. calculus
33
Where can we see recurrent caries on a radiograph?
under a restoration
34
What other structures can we see on a maxillary periapical radiograph?
floor of maxillary sinus
35
Periapical abscess vs periapical granuloma
histologically different | radiographically the same
36
Most common type of cyst?
redicular cyst
37
Second most common type of cyst?
dentigerous cyst
38
Where does dentigerous cyst develop?
develops around a crown of an unerupted permanent supernumerary tooth
39
What is the most significant characteristic of a cyst?
- well defined, corticated borders (when we can distinguish healthy tissue from affected tissue) - uniform low density/radiolucent content/blending w/ surroundings (nothing but grey) - pushing instead of invading
40
An acceptable x-ray panoramic must have:
a. all maxillofacial structures well centers in the fil b. all teeth have to show a uniform sharpness -even distributed c. all teeth and structures are magnified -uniform magnification d. occlusal plane represents a smile line
41
Where does radicular cyst grow?
At the root of the tooth
42
What do T1 and T2 images show in MRI?
T1: fat T2: body fluids
43
Dentigerous cyst comes from / Most common feature of a dentigerous cyst?
an inflamed/ IMPACTED TOOTH
44
Medical CT other names:
multislice CT, fan CT, MSCT
45
What is a voxel?
=voxel element; piece of information in a 3D image | ex: MRI, medical CT, CBCT, ultrasound
46
What is a pixel?
=piece of information in a digital image
47
What is the association of pixel with image quality?
the more the pixels, the better the image quality
48
What is the association of voxel with image quality?
the smaller the volume element, the higher the detail
49
Which of the following are malignant diseases? | Which are the characteristic features of malignancies?
- Irregular borders - Mixed appearance - Very aggressive behavior - Moth eaten appearance
50
What kind of double real images do we have?
hard palate, soft palate, airway
51
Which are the characteristic features of malignancies?
- Irregular borders - Mixed appearance/content (not uniform) - Very aggressive behavior -they dont expand; they invade - Moth eaten appearance (difficult to distinguish where borders begin and stop -poorly defined) - Rapid growth
52
What is the difference b/w a CBCT and a CT?
CBCT: uses a cone-shaped area detector that does not require patient movement, used for surigcal plannning, implant placement, cysts/tumors, quicker CT: fan-shaped x-ray beams that rotate while the patient advances, more radiation, slower than CBCT
53
What is the difference b/w an MRI and CT?
MRI: no radiation; uses magnetic field, needs H protons, super slow, soft tissue information CT: ionizing radiation, quick, hard tissue(skeletal) information
54
What is the difference b/w a CBCT and a CT?
CBCT: cone beam, used for surigcal plannning, implant placement, cysts/tumors CT: fan shaped, more radiation
55
What is Magnetic Resonance imaging?
=a non-invasive imaging technology that produces 3D anatomical images
56
Magnetic properties of which atoms are we using to make an MRI?
H protons / H nuclei
57
What is the difference b/w x-ray and an MRI?
x-ray uses ionizing radiation | MRI uses magnetic field
58
If a cystic lesion contains fat or water which MRI should we use?
T2
59
Dentigerous cyst can:
displace a tooth and cause resorption
60
What are the disadvantages of an MRI?
- special facilities: cant be placed near airports and they are big machines - artifacts: if there are metals we need to have plastic b/c magnet can pass through metals - expensive - lengthy examinates (super slow)
61
What is a radicular cyst?
=inflammation started from a dead tooth
62
What kind of cystic lesion is this?
My differential diagnosis is....1....2.....
63
What does benign tumor mean?
=local; doesn't spread to distal locations; doesn't metastasize
64
Ameloblastoma:
- benign tumor - multilocular (numerous small chambers) - may look like a dentigerous cyst or OKC
65
What are the postioning errors on a panoramic radiograph?
chin too far up, chin too far down, patient too fat back, patient too far forward
66
What are the positioning errors on a panoramic radiograph?
chin too far up, chin too far down, patient too fat back, patient too far forward
67
What happens if the chin is too far down?
exaggerated smile
68
What happens if chin is far up?
smaller teeth
69
What happens if patient is too forward?
anterior teeth narrow as fuck
70
What happens if chin is far up?
(exaggerated sadness)
71
What is arrested caries?
=carious lesion separated from the pulp by a thin opaque layer
72
What is root caries?
=carious lesion below CEJ
73
What are the advantages of an MRI?
- excellent soft tissue contrast - high sensitivity in cancer diagnosis - elimination of standard contrast media - direct multi-plannar reformatting
74
What are the contraindications of an MRI?
- patients with pacemakers | - claustrophobic patients
75
Where does an abcess go when it expands?
to cortical bone
76
periapical cyst vs periapical granuloma
may look the same radiographically, but periapical cyst is bigger
77
What is Radicular Cyst?
=cyst resulting from stimulation of epithelial cells which result in PDL by inflammatory products from a non-vital tooth
78
What odontogenic cysts do you know? ``` dentigerous mucous retention odontogenic keratocyst dernoid paradental aneurysmal bone nasiolabial radicular simple bone globulomaxillary calcifying nasopalatine stafne bone lateral periodontal residual ```
``` dentigerous odontogenic keratocyst paradental radicular lateral periodontal residual calcifying ```
79
What non-odontogenic cysts do you know? ``` dentigerous mucous retention odontogenic keratocyst dernoid paradental aneurysmal bone radicular simple bone globulomaxillary nasolabial calcifying nasopalatine stafne bone lateral periodontal residual ```
dernoid globulomaxillary nasolabial nasopalatine
80
What pseudocysts do you know? ``` dentigerous mucous retention odontogenic keratocyst dernoid paradental aneurysmal bone radicular simple bone globulomaxillary nasolabial calcifying nasopalatine stafne bone lateral periodontal residual ```
stafne bone aneurysmal bone mucous retention simple bone
81
What non-odontogenic tumors do you know? ``` ectodermal central odontogenic fibroma benign cementoblastoma pseudotumors CEOT ameloblastoma odontoma ameloblastic fibroma mixed tumors ameloblastic fibro-odontoma mesodermal odontogenic myxoma adenomatoid odontogenic tumor ```
ectodermal mixed tumors mesodermal pseudotumors
82
What odontogenic tumors do you know? ``` ectodermal central odontogenic fibroma benign cementoblastoma pseudotumors CEOT ameloblastoma odontoma ameloblastic fibroma mixed tumors ameloblastic fibro-odontoma mesodermal odontogenic myxoma adenomatoid odontogenic tumor ```
``` central odontogenic fibroma benign cementoblastoma CEOT ameloblastoma odontoma ameloblastic fibroma ameloblastic fibro-odontoma odontogenic myxoma adenomatoid odontogenic tumor ```

Radiology (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions