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

被引:109
作者
Kato, R
Katada, K
Anno, H
Suzuki, S
Ida, Y
Koga, S
机构
[1] FUJITA HLTH UNIV,SCH HLTH SCI,FAC RADIOL TECHNOL,TOYOAKE,AICHI 47011,JAPAN
[2] FUJITA HLTH UNIV HOSP,DEPT RADIOL,TOYOAKE,AICHI,JAPAN
关键词
computed tomography (CT); guidance; interventional procedures; technology; radiations; exposure to patients and personnel; measurement;
D O I
10.1148/radiology.201.2.8888264
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
The radiation dose to physicians' hands without and with use of needle holders tvas 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.
引用
收藏
页码:576 / 578
页数:3
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