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. 1996 Nov;201(2):576-8.
doi: 10.1148/radiology.201.2.8888264.

Radiation dosimetry at CT fluoroscopy: physician's hand dose and development of needle holders

R Kato  1 , K Katada, H Anno, S Suzuki, Y Ida, S Koga
Affiliations

Radiation dosimetry at CT fluoroscopy: physician's hand dose and development of needle holders

R Kato et al. Radiology. 1996 Nov.

Abstract

The radiation dose to physicians' hands without and with use of needle holders was determined at 10 computed tomography (CT) fluoroscopy-guided transthoracic needle biopsies. As measured with ionization chambers (tube voltage, 80 kVp; tube current, 30 mA), the mean absorbed dose rate without and with holders was 1.14 mGy/sec +/- 0.02 (standard deviation) and 0.019 mGy/sec +/- 0.001, respectively. The mean duration of CT fluoroscopy was 59 seconds in 10 biopsies performed with a holder and 82 seconds in 10 biopsies performed without a holder (difference not statistically significant). The needle holders did not cause any artifacts that interfered with the biopsy procedure.

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