Underhill T E, Chilvarquer I, Kimura K, Langlais R P, McDavid W D, Preece J W, Barnwell G
Department of Dental Diagnostic Sciences, School of Dentistry, University of Texas Health Science Center, San Antonio.
Oral Surg Oral Med Oral Pathol. 1988 Jul;66(1):111-20. doi: 10.1016/0030-4220(88)90077-1.
The aim of the present study was to generate one consistent set of data for evaluating and comparing radiobiologic risks from different dental radiographic techniques. To accomplish this goal, absorbed doses were measured in fourteen anatomic sites from (1) five different panoramic machines with the use of rare-earth screens, (2) a twenty-film complete-mouth survey with E-speed film, long round cone, (3) a twenty-film complete-mouth survey with E-speed film, long rectangular cone, (4) a four-film interproximal survey with E-speed film, long round cone, and (5) a four-film interproximal survey with E-speed film, long rectangular cone. The dose to the thyroid gland, the active bone marrow, the brain, and the salivary glands was evaluated by means of exposure of a tissue-equivalent phantom, fitted with lithium fluoride thermoluminescent dosimeters (TLDs) at the relevant locations.
本研究的目的是生成一组连贯的数据，用于评估和比较不同牙科放射成像技术的放射生物学风险。为实现这一目标，在14个解剖部位测量了吸收剂量，测量采用了以下方法：(1) 使用稀土增感屏的5台不同全景机；(2) 使用E速胶片、长圆形准直器的20张全口牙片检查；(3) 使用E速胶片、长矩形准直器的20张全口牙片检查；(4) 使用E速胶片、长圆形准直器的4张邻面牙片检查；(5) 使用E速胶片、长矩形准直器的4张邻面牙片检查。通过在相关位置安装氟化锂热释光剂量计（TLD）的组织等效体模进行照射，评估甲状腺、活性骨髓、脑和唾液腺所接受的剂量。
