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NEWTOM 3G CBCT TOMOGRAFİ CİHAZI DOZ DEKLARASYONU
( CBCT = Cone Beam Volumetric Tomografy )

Technique
Effective
Dose in
uSv - 1990
ICRP
tissue
weights
Dose as
multiple
of single
Panoramic
Dose
(ICRP-1990)
Dose in
days of
per capita
background
dose
Dose in
terms of
% medical
CT
equivalent
Dose in
terms of
% annual
per capita
background
dose
NewTom3G - Full (12”) FOV*
45
7
4
2,1%
1,2%
NewTom3G - chin tilt & Thyroid Shield*
28
4
3
1,3%
0,8%
CB Mercuray - F (12”) FOV 10 mA-100 kV*
477
74
48
22,7%
13,2%
CB Mercuray - P (9”) FOV*
289
45
29
13,8%
8,0%
CB Mercuray - I (6”) FOV (maxillary)*
169
26
17
12,0%
4,7%
CB Mercuray - I (6”) FOV w/ chin tilt*
125
19
12
5,9%
3,5%
i-CAT - Full (12”) FOV*
135
21
13
6,4%
3,7%
i-CAT - chin tilt & thyroid shield*
57
9
6
2,7%
1,6%
Panormic (OrthoPhos Plus DS)†
6
1
1
0,3%
0,2%
CT Maxillo-Mandibular‡
2100
385
243
100,0%
58,3%
CT Maxillary‡
1400
164
103
100,0%
38,9%
*Ludlow JB, Davies-Ludlow LE, Brooks, SL, Howerton B. Dosimetry of 3 CBCT Units for Oral and Maxillofacial Radiology. Abstract accepted for 15th International Congress of the International Association of Dento-Maxillo-Facial Radiology, Cape Town, South Africa June 2005.
† Ludlow JB, Davies-Ludlow LE, Brooks, SL. Dosimetry of two extraoral direct digital imaging devices: NewTom cone beam CT and Orthophos Plus DS panoramic unit. Dentomaxillofacial Radiology 2003;32:229-34
‡ Ngan DC, Kharbanda OP, Geenty JP, Darendeliler MA. Comparison of radiation levels from computed tomography and conventional dental radiographs. Aust Orthod J. 2003;19:67-75

 

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