[The radiation loading of the crystalline lens and thyroid during high-resolution computed tomography of the teeth].
The radiation dose to the ocular lens and thyroid gland during high resolution CT of the jaw was measured in a head phantom and in 9 patients. The dose for the lens and thyroid gland resulting from 10 cuts was 0.7 and 0.9 mGy, respectively. By shielding the thyroid gland against scatter a reduction of 20% is possible. Radiation exposure is considerably higher than during conventional dental x-ray examinations. Compared with CT examinations of the head and neck region, radiation exposure of both organs is about the same.
Schüller
H
H
Radiologische Klinik, Universität Bonn.
Köster
O
O
Ewen
K
K
D006801:Humans; D007908:Lens, Crystalline / Q000528:radiation effects*; D008961:Models, Structural; D011829:Radiation Dosage; D011835:Radiation Protection; D013819:Thermoluminescent Dosimetry; D013961:Thyroid Gland / Q000528:radiation effects*; D014057:Tomography, X-Ray Computed / Q000009:adverse effects* / Q000295:instrumentation / Q000379:methods; D014070:Tooth / Q000000981:diagnostic imaging*
Untersuchung zur Strahlenbelastung von Augenlinse und Schilddrüse bei der hochauflösenden Computertomographie der Zähne.