cbct 2013

Obiectivele cursului:

1. Principiile tehnice ale CBCT

2. CBCT versus dental CT

3. Sisteme CBCT si caracteristici

4. Modalitati de examinare in CBCT

5. Aplicatii clinice in patologia dento-maxilo-faciala

CBCT ≠ CT

1972 – Hounsfield CT spirala CT multislice 2001 - CBCT

CBCT – CT clasic 1999 in Europa 2001 in US

Detector

‘

Detector

Imaginea CBCT

CBCT vs. CT clasic Captura radiatiilor X

medical CT scanners utilizeaza un singur rand sau o serie de detectori solizi liniari (4, 8, 12, 32 , 64)

Cone Beam CT utilizeaza o suprafata 2D patratica de detectori

CBCT vs. CT clasic

Cone Beam CT scanner produce o achizitie in volum a datelor, urmand ca software-ul aparatului se realizeza o reconstructie a datelor volumerice in sectiuni axiale, 2D

- imagini 2D – MPR - imagini 3D - volume rendering si surface

reconstruction

CBCT vs. CT

medical CT scanner produce un set consecutiv de sectiuni

Cone Beam CT scanner produce o achizitie in volum a datelor, urmand ca software-ul aparatului se realizeza o reconstructie a datelor volumerice in sectiuni axiale, 2D

CBCT vs. CT clasic MDCT scanners echipamente de dimensiuni

mari – in spitale si centre de diagnostic mari

Cone Beam scanners – echipamente mici, compacte, dedicate centrelor de diagnostic maxilo-facial;

CBCT vs. CT clasic

Anatomia si structura osului osoase

Anatomia si structura osoasa si a partilor moi

Doze comparative CBCTvs.CT

Caracteristicile sistemului CBCT

Tipuri de detectori Marimea campului de scanare (FOV) Rezolutia – dimensiunea voxelului Timpul de achizitie Doza efectiva Design

Tipuri de detectori CBCT Image intensifier

system /CCD/CMOSRezolutie spatiala mai

bunaDistorsiune periferica Acuratete mai

scazuta a masuratorilor

rezolutia de contrast mai scazuta

Zgomotul imaginii crescut

Flat panel detector mai nou introdusiDistorsiune periferica

redusaNecesita o doza mai

mare

Algoritmi de reconstructie a imaginii Feldkamp algoritm

primul introdus in practica Utilizat de majoritatea CBCT

existente pe piata Usor de implementat Acuratete crescuta pentru

regiunile centrale ale imaginii

Distorsiune crescuta in regiunile periferice in plan transversal (axial)

Rezolutie scazuta la periferie in plan longitudinal

Iterative reconstruction methods

Recent introdusa

Distorsiune redusa inclusiv in zonele periferice

Reducerea artefactelor Necesita calculoare

performante pentru analiza datelor.

Tipul CBCT Producator Pozitia Voxel size (μm)

FOV detector MTF

3D Accuitomo FPD 170, 60, 80

Morita, Japan sezut 0.080.1250.1600.250

40x40mm60x60mm80x80mm100x100mm

FP /CMOS FP14 bit

>2pl/mm

Veraview 3D Morita, Japan (Pano Ceph)

ortostatism 0.125-0.2 100x8080x8040x4040x8040x50100x50

CMOS FP13 si 14 bit

>2pl/mm

CB Mercuray CB Throne

Hitachi , Japan sezut 0.1-0.4

Auge ZIO Asahi, Japan (Pano/Ceph)

Orostatism 0.1-0.15

NewTom 3G, 5G, VQ

QR, Italy SezutOrtostatismdecubit

0.160.240.3

6-18 cm (D) x 6-16 cm (H)

Amorphous silicon FP 20 x 25 cm

14bit

Scanora 3D Soredex, Finland (Pano)

sezut 0.13-0.35

Galileos Sirona, sezut./orto 0.15-0.30


FOV detector MTF

PaX 300 PaX UNI 3D, PaX Reve 3D

Vatech , Coreea(Pano /Ceph)

Sezut ortostatism

0.080.125

Flat Panel 15 bit

Piccaso Pro , Trio

Vatech , Coreea (Pano Ceph)

Sezut ortostatism

0.2-0.3

Promax 3D Planmeca , Finland (CBCT/Ceph)

ortostatism 0.1-0.2-0.4

20x18mm Flat Panel


sezut 0.13-0.35 20x18 mm CMOS Flat panel

Galileos Sirona, sezut./orto 0.15-0.30 15x15mm Siemens Technology


FOV detector

Kodak 9000, Kodak 9500

Kodak , USA(Pano/ceph)

Ortostatism 0.070.2-0.3

Illuma Imtec USA sezut 0.09-o.2-0.3-0.4

I-CAT Imaging science, USA

sezut 0.125-0.4 4x8mm8x8mm

Amorphous silicon FP

Kavo 3D, Gx GB

Gendex/Kavo Germany

sezut 0.125-0.4

Tipul CBCT Producator doza Focal spot

X ray source

software Caracteristici speciale

3D Accuitomo FPD 170, 60, 80

Morita, Japan 13µSv (4x4 CM 17.5 sec scan)

0.5mm 60-90 kV, 1-10 mA

MAX 8mA (Hi-Fi & Hi-Res Mode)

i-Dixel 2.0/One Data Viewer/One Volume Viewer

Ca mai buna claritate a imaginii de la Morita

Posibil zoom pe o anumita regine de interes

Veraview 3D Morita, Japan (Pano Ceph)

15µSv (4x4 CM 9.5 sec scan)

0.5mm60-80 kV, 1-10 mA

i-Dixel 2.0/One Data Viewer/One Volume Viewer

Convex triangle shape of FOV

CB Mercuray CB Throne

Hitachi , Japan

Auge ZIO Asahi, Japan (Pano/Ceph)

NewTom 3G, 5G, VQ

QR, Italy

49 µSv

0.3mm High frequency, constant potential

(DC)Rotating anode:

110 kV; 1-20 mA (Pulsed mode)

NNT™ with free viewer & sharing

app

•Safe Beam™ technology, -doza de radiatie este adaptata densitatii structurii anatomice* Unique "pulse density”

PaX 300 PaX UNI 3D, PaX Reve 3D

Vatech , Coreea(Pano /Ceph)

40.52 - 60.95 µSv0.5mm 50~120kVp/

4~10mA EasyDent/Ez3D

* Tehnologie de reducere a artefactelor* Posibilitate de alegere a FOV


X ray source


Piccaso Pro , Trio

Vatech , Coreea (Pano Ceph)

Promax 3D Planmeca , Finland (CBCT/Ceph)

12 µSv (Child) - 150 µSv (Adult)

* Automatically adjusts volume sizes for children* Improved artifact removal (IAR) for high constrast object compensation* Compatible with Mac OS computers* 3D face photograph (ProFace)* 3D Impression scan


Galileos Sirona,


X ray source


Kodak 9000, Kodak 9500

Kodak , USA(Pano/ceph)

Illuma Imtec USA *

I-CAT Imaging science, USA

40-110µSv 0.5mm 120kV, 3-7mA pulsed

Icat Vision

Kavo 3D, Gx GB

Gendex/Kavo Germany

Recosntructii 3D a structurilor osoase si a partilor moi

NT-II 9”

NT-FP

Implantologie

Implantologie - Sabloane cu markeri radioopaci

DICOM 3 3rd party software. Please call for details.

Implantologie

3-D Implant Planning

DICOM 3 3rd party software. Please call for details.

CBCT post-implantar

2. Incluzia dentara

Incluzia dentara

1.3 inclus

3. ortodontie

3-DVR™ (3-D Volume Rendering Software)

ortodontie

DICOM 3 3rd party software. Please call for details

RepositionReposition

Chirurgia ortognatica

DICOM 3 3rd party software. Please call for details

Sinus lift - preop

postop

4. Diformitati cranio-faciale

5. Traumatisme maxilo-faciale

5. Traumatisme maxilo-faciale- Le Fort II


Zigomatico-maxilara

Oase nazale

6. ATM- anchiloza

7. ATM – disfunctia ATM

8. Osteomielite

Comunicare oro-antrala

9. Tumori osoase -ameloblastom

Tumori osoase- displazie fibro-chistica

Tu sinus maxilar

Osteosarcom maxilar CT/CBCT

LIMFOM mandibular

10. Tumori cu invazie osoasa

Invazie tumorala osoasa

11. Hipoplazie sinusala

Hipoplazie sinusala

Sinuzite

cbct 2013

Documents

introdus in practica

ctmedical ct scanner

3520x18 mmcmos flat

detectori solizi liniari