Implant radiology

Question 1

Radiographic Information

Answer 1

• Depth of bone
• Width of bone
• Quality of bone
• Angulation of bone
• Location of vital structures

Question 2

vital strucutres to locate on radio

Answer 2

• Nasal fossa
• Maxillary sinus
• Inferior alveolar canal
• incisive canal

Question 3

IMAGING MODALITIES

Answer 3

• Intraoral Radiography
• Panoramic Radiography
• Computed Tomography
• Cone Beam Computed Tomography

Question 4

optimal technique for intraoral

Answer 4

paralleling technique with long cone to provide most accurate image

Question 5

magnification

Answer 5

long cone technique will reduce this effect

Question 6

benefits and con of intraoral

Answer 6

pros: good spatial resolution, easy, low dose
cons: low FOV

Question 7

pano focal trough

Answer 7

want arch in this space to optmize image properties, specifically in the central plane

Question 8

placing a posterior implant on the max R side may have what issue?

Answer 8

sinus is pneumatized, would need lift

Question 9

pano cons

Answer 9

Unsharpness, Shape Distortion, Magnification all occur outside focal trough
2D image
lower spatial resolution

Question 10

benefits of pano

Answer 10

FOV, fairly accessable, less cost than CBCT

Question 10

benefits of pano

Answer 10

FOV, fairly accessable, less cost than CBCT

Question 11

how could magnification of pano be determined if unkwn

Answer 11

bb technique

Question 12

issue with pano beam and strucutres within bone

example?

Answer 12

beam is angled so strucutures in bone may app in different vertical location based on B/L location of them

Question 13

COMPUTED TOMOGRAPHY

Answer 13

• Rotational movement of beam and detector
• Sequential axial slices
• Computer manipulation of data
• Multiplanar reformatting

Question 14

CT pros

Answer 14

• No superimposition of structures
• Image acquisition in multiple planes
• Hard-tissue and soft-tissue imaging
• Digital image enhancement

Question 15

CT slices

Answer 15

can look through slices of structures, typically in increments such as 1mm

Question 16

CBCT

Answer 16

Cone shaped beam
One flat panel sensor
lower cost and dose compared to medical CT

Question 17

Advantages/Disadvantages over
Medical CT

Answer 17

Less radiation
Lower cost

Image Noise
Poor soft-tissue contrast
Fixed imaging volume

Question 18

why does CBCT have lower soft tissue contrast

Answer 18

More scatter radiation=Poor soft-tissue contrast

Question 19

implant radio modality for inital exam

Answer 19

Pano and PA of interest

Question 20

implant radio modality for preop

Answer 20

CBCT

Question 21

implant radio modality for intraop

Answer 21

PA

Question 22

implant radio modality for postop follow ups

Answer 22

pano with multiple implants placed
asymptomatic: PA
symptomatic: CBCT

Question 23

how can CT slices be useful for planning

Answer 23

can examine state of the ridge, width and undercuts

Question 24

what modality can be used to evaluate a sinus lift or bone graft

Answer 24

CBCT

Question 25

INTERACTIVE SOFTWARE PROGRAMS
IMAGE-GUIDED APPLICATIONS

Answer 25

angle and distance measurement

Question 26

benefits of cross-sectional imaging

Answer 26

can examine state of ridge you want to place implant in.