[e-mail]

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Dental Digital Radiography
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07-31211012755
yukkwa_at_kmu.edu.tw
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Understanding 1. Overall knowledge on
digital image 2. Dental digital radiographic
systems 3. Advantages disadvantages of dental
digital imaging 4. Cone beam
computerized tomography 5. Fraudulent
management of digital images 6. ???????????
3
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References
1. Parks ET, et al. J Contemp Dent Pract
2002423-39
2. White Pharoah Oral radiology principle
interpretation, 5th edition, Chapter 12, p.
227-244
3. ??? Quick Master of web design. Part 6,
Lesson 2, p.178-189
4. Schleyer TKL et al. The technologically
well-equipped dental office. JADFA
200313430-41
5. Adkeniz BG Guneri P. Int Endod J
200437214-220
6. Brooks SL, Miles DA. Advances in diagnostic
imaging in dentistry. Dent Clinic North Am
19933791-111
7. http//www.learndigital.net
8. Kaohsiung Medical University, Oral Pathology
9. Chen SK Macdonald R. Chin Dent J 2003221-8
10. Van der Stelet PF. Dent Clin North Am
200044237-48
11. Cha YJ et al. Incidental findings in the
maxillofacial area with 3-dimensional
cone-beam imaging. Am J Orthod Dentofacial Orthop
20071327-14.
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Classification of Digital Image
Digital Image
Bitmap Image (? ? ?)
Vector Image (? ? ?)
??????????
????? ??(pixel)
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????(pixel)?????????
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Classification of Digital Image
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Classification of Digital Image
Ref. 3
7
? ? ? ? ? ?
BMP ?? ?? ??? ANGEL, DENTSPLY
TIFF ?? ?? ?? SINORA, TROPHY, DENTSPLY
GIF 256? ?? ????
JPEG ?? ?? ANGEL, DENTSPLY
DICOM ?? ?? ?? PACS (Picture Archiving Communication System)
Digital Imaging COmmunication in Medicine
(DICOM)
National Electrical Manufacturers Association/Amer
ican College of Radiology
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? ? ? ?? ? ? ? ? ?
Ref. 9
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Terminology
Ref. 1
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Terminology
Ref. 1
11
What is a digital image ?
Analog signal converter
Refs. 1, 6, 10
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What is a digital image ?
More effective use of radiation
Digital
Information
Conventional X-ray
Dose
Ref. 10
13
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???? (?????)
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Ref. 1
14
Solid State Detector, SSD Charge-Coupled
Device (CCD)
The first system (1984) RadioVisioGrapy (RVG)
- Invented by Dr. Frances Mouyens Manufactured by
Trophy Radiologie (Vincennes, France)
600dpi
Ref. 1
15
Solid State Detector, SSD Charge-Coupled
Device (CCD)
X-ray capture efficiency increase resolution
increase
A
www.airtechniques.com/products/detailview2.aspx?id
90
B
1pixel utilizes 3 electrodes
Basic structure of CCD
Ref. 2
16
Photo Stimulable Phosphor System
(PSP)/(IPS)/(SPS)
600dpi
The PSP consists of a polyester base coated with
a crystalline halide emulsion a
europium-activated barium fluorohalide compound
(BaFBrEu2) that converts X-ray radiation into
stored energy, which is released as blue
fluorescent light when scanned with a helium-neon
laser beam. The emitted light is captured and
intensified by a photomultiplier tube then
converted into digital data.
Ref. 1
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Photo Stimulable Phosphor System
(PSP)/(IPS)/(SPS)
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Different intraoral image sensors
Ref. 2
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Ref. 1
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Digital extraoral radio-graphic unit
Dental Digital Imaging System
Image Detectors
Photo Stimulable Phosphor System (PSP)/ (IPS)
/(SPS)
Solid State Detector, SSD Charge-Coupled
Device (CCD)
Wireless-
latent image
Digital intraoral radiographic unit
Optic cable
Instant image
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Ref. 4, manufacturer datasheet
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Scan X System
Manufacturer datasheet
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Scan X System
Scanning times
Manufacturer datasheet
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Disadvantages of drum scanner
Manufacturer datasheet
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Advantages of VistaScan
Manufacturer datasheet
25
Scan X System
Manufacturer datasheet
26
Scan X System
Intra-oral
Panorama/Ceph
Manufacturer datasheet
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Scan X System
ScanX Intraoral
www.airtechniques.com/ products/detailview2.a spx?
id88
ScanX Duo
www.airtechniques.com/ products/detailview2.a spx?
id112
www.airtechniques.com/products/detailview2.aspx?id
86
In-Line Erase
Manufacturer datasheet
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Scan X System
ScanX Cleaning Sheets A quick and convenient way
to keep the ScanX dust free. ! Sheets are cut
and specially sized for use in each scanner. !
Run through the scanner just like imaging plates.
www.airtechniques.com/pdf/ScanX_CleaningSheets_Lit
_9922_237.pdf
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Scan X
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Commercial available Products
Ref. 7
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Commercial available Products
Ref. 7
32
Dental Digital Imaging System
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Ref. 4, Microsoft Picture Archives
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Dental Digital Imaging System
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Microsoft Picture Archives
34
Cone Beam CT - KMUOP
???CBCT???X???????????,????????????????,????????X?
?,?????CT???????????,?????2.2???2.5??
Kaohsiung Medical University, Oral Pathology
Department
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Principle of Cone Beam CT
X-ray source
System rotation axis X-ray-Detectors
X-ray cone beam
Anatomic volume
Plane of detector
Projection of the volume on the plane of detector
Detector element
Manufacturer datasheet
36
Principle of Cone Beam CT
??3D???????????????? ??X???????,????????? ????????
????
Manufacturer datasheet
37
Conventional Spiral CT
Cone Beam CT
X-ray Source
X-ray Source
Fan of X-ray
Cone of X-ray
Detector
Detector
????????????????? CB-CT????1???????????Volume
Data????Multi-Slice?,?X?Y?Z?????????,??Voxel??????
,????????????????????,???,?????????????,??????
????????? (MPR Multi Planar Reconstruction),?3D?
?????,???????????
Manufacturer datasheet
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FOV Field Of View
Principle of Cone Beam CT
FOV Field of View
12cm
7cm
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Principle of Cone Beam CT
CBCT????????? D (Dental) Mode
FOV???51.2mm,????100?m I (Implant) Mode
FOV???102.4 mm,????200?m P (Panoramic) Mode
FOV ???150.0mm,????293?m F (Facial) Mode
FOV???192.5mm,????376?m
????X???9.6????????360? ???????????(512?5l2?5l2
Matrix)
Manufacturer datasheet
40
Images of Cone Beam CT
2D Image Diagnosis
Panoramic Image
Periapical Image
Manufacturer datasheet
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3D Image Diagnosis
Images of Cone Beam CT
Manufacturer datasheet
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MPR - Multi-Planar Reconstruction
Images of Cone Beam CT
Manufacturer datasheet
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Thickness and Interval
Images of Cone Beam CT
Thickness 10mm
Interval 10mm
Manufacturer datasheet
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Radiation dose of Cone Beam CT
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Radiation Dose of Cone Beam CT
This type of cone beam CT (NewTom 9000) can
produce an image with significantly less
radiation than traditional CT because it uses an
image intensifier this is particularly important
for children. The absorbed dose from a full
volume scan is 36.9 to 50.3 ?Sv (Ref. 11)
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Principle of Cone Beam CT
Manufacturer datasheet
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Images of Cone Beam CT
Manufacturer datasheet
48
Images of Cone Beam CT
Manufacturer datasheet
49
Images of Cone Beam CT
Manufacturer datasheet
50
Images of Cone Beam CT
Manufacturer datasheet
51
Images of Cone Beam CT
Ref. 7
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Images of Cone Beam CT
Ref. 7
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Images of Cone Beam CT
Ref. 7
54
Commercial available products for Cone Beam CT
Ref. 7
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Fraudulent management of digital images (1)

Ref. 5
56
Fraudulent management of digital images (2)
Ref. 5
57
Fraudulent management of digital images (3)
Ref. 5
58
Fraudulent management of digital images (4)
Ref. 5
59
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Thanks For Your Kind Attention
Microsoft Picture Archives
60
Summaries
Knowing 1. Overall knowledge on digital
image 2. Dental digital radiographic systems
3. Advantages disadvantages of dental
digital imaging 4. Cone beam computerized
tomography 5. Fraudulent management of digital
images 6. ???????????