Occupational radiation exposure to interventional radiologists: a prospective study.

This study investigates the occupational radiation dose to interventional radiologists and the operator-controlled factors that may affect dose. Thirty interventional radiologists wore radiation badges over and under lead aprons for 2 months and answered a questionnaire. The relationships between dose and caseload, case mix, experience, optional fluoroscopy features, lead apron type, and additional lead shielding were evaluated. Mean projected yearly dose (PYD) over lead was 49.1 mSv (1 mSv = 100 mrem) but was 66.6 mSv for persons performing 1,000 or more cases per year (P = .027). Mean PYD under lead was 0.9 mSv but was 1.3 mSv for persons with 0.5-mm lead coverage and 0.4 mSv for those with 1.0-mm lead coverage (P = .002). No other significant correlation was found. Conclusions are that caseload and apron thickness are the primary determinants of total body dose, that over-lead dose is high enough to warrant additional lead shielding for the head and neck, and that a double-thickness apron lowers under-lead dose by two-thirds. The large difference between under-lead and over-lead doses suggests that use of a collar badge alone for monitoring purposes is not predictive of total-body effective dose for this group of radiation workers.

[1]  S. Balter,et al.  Radiation Exposure to the Operator Performing Cardiac Angiography With U-Arm Systems , 1978, Circulation.

[2]  R. C. Riley,et al.  Exposure of radiologists during special procedures. , 1972, Radiology.

[3]  R. Gould,et al.  Improved radiation protection for physicians performing cardiac catheterization. , 1982, The American journal of cardiology.

[4]  K. Faulkner,et al.  Estimation of effective dose equivalent to staff in diagnostic radiology. , 1988, Physics in medicine and biology.

[5]  M. Taylor,et al.  Permissible dose from external sources of ionizing radiation. , 1957, Department of the Army technical bulletin. TB MED.

[6]  R. Sievert,et al.  Book Reviews : Recommendations of the International Commission on Radiological Protection (as amended 1959 and revised 1962). I.C.R.P. Publication 6. 70 pp. PERGAMON PRESS. Oxford, London and New York, 1964. £1 5s. 0d. [TB/54] , 1964 .

[7]  F. Mettler,et al.  The radiologist and angiographic procedures. Absorbed radiation dose. , 1987, Investigative radiology.

[8]  H. W. Julius,et al.  Exposure of the radiologist to scattered radiation during angiography. , 1975, Radiology.

[9]  A. Lunderquist,et al.  Personnel exposure to radiation at some angiographic procedures. , 1981, Radiology.

[10]  L. Taylor.  X-Ray Protection , 1931 .

[11]  Eric Ziegl,et al.  Statistical Methods for the Analysis of Biomedical Data , 1989 .

[12]  K Faulkner,et al.  An investigation of the radiation dose to staff during cardiac radiological studies. , 1985, The British journal of radiology.

[13]  J. Gray,et al.  Radiation hazard to operating room personnel during operative cholangiography. , 1980, Archives of surgery.

[14]  Henry I. Kohn,et al.  Health Effects of Exposure to Low Levels of Ionizing Radiation (BEIR V) , 1990 .

[15]  Webster Ew.  EDE for exposure with protective aprons. , 1989 .

[16]  T. Whittingham.  The ultrasonic biparietal diameter, expressed in time units. , 1971, The British journal of radiology.

[17]  C. R. Richmond.  ICRP Publication 23 , 1985 .

[18]  F. Marshall,et al.  Monitoring radiation exposure to medical personnel during percutaneous nephrolithotomy. , 1986, Urology.

[19]  L. Brateman.  A plea for sensible film badge placement in diagnostic radiology. , 1989, Health physics.

[20]  Icrp.  1990 Recommendations of the International Commission on Radiological Protection , 1991 .

[21]  D. Jones,et al.  Radiation dose to personnel during percutaneous renal calculus removal. , 1985, AJR. American journal of roentgenology.

[22]  J. Fabrikant.  Basic radiation protection criteria: NCRP Report No. 39. Recommendations of the National Council on Radiation Protection and Measurement. National Council on Radiation Protection and Measurements, Washington, D.C. (1971). , 1973 .

[23]  F. R. Begg,et al.  Radiation exposure to angiographer during coronary arteriography using the U arm image amplifier. , 1975, Catheterization and cardiovascular diagnosis.

[24]  D. Baker.  Radiology, is there an occupational hazard? , 1988, American Industrial Hygiene Association journal.

[25]  M. Goldblatt.  Medical X-Ray Protection up to Two Million Volts , 1949 .