碘125和钌106眼部敷贴手术中外科医生吸收剂量的测定。
Determination of surgeon's absorbed dose in iodine 125 and ruthenium 106 ophthalmic plaque surgery.
作者信息
Laube T, Flühs D, Kessler C, Bornfeld N
机构信息
Zentrum für Augenheilkunde, Universitätsklinikum Essen, Germany.
出版信息
Ophthalmology. 2000 Feb;107(2):366-8; discussion 368-9. doi: 10.1016/s0161-6420(99)00050-0.
OBJECTIVE
Validation of dosimetry and exposition time to an ophthalmic surgeon during radioactive plaque operations.
DESIGN
Experimental study in which videotaped operations and dosimetric measurements were used to model dosimetry.
METHODS
We used thermoluminescence detectors for high sensitivity readings in radiation fields. Typical intersurgical mobility was videotaped and distances to the plaque was evaluated.
MAIN OUTCOME MEASURE
Estimated radiation received by surgeons.
RESULTS
All simulated plaque operations have a maximum dose rate of 6 mGy per minute (value in the inner eyeball). Mean dose rate is 2 mGy per minute (average of approximately all measurements). The surgeon's fingers receive a dose from 2 to 6 mSv from plaque operation.
CONCLUSIONS
Results suggest that radioactive plaque operations are safe for the surgeon but that the time for plaque handling should be minimized. A surgeon should not exceed 100 to 200 operations per year.
目的
验证放射性敷贴手术中眼科医生的剂量测定及暴露时间。
设计
采用录像手术和剂量测定测量来模拟剂量测定的实验研究。
方法
我们使用热释光探测器在辐射场中进行高灵敏度读数。对典型的手术间移动进行录像，并评估到敷贴的距离。
主要观察指标
外科医生所接受的估计辐射量。
结果
所有模拟的敷贴手术最大剂量率为每分钟6毫戈瑞（眼球内部的值）。平均剂量率为每分钟2毫戈瑞（大约所有测量值的平均值）。外科医生的手指在敷贴手术中接受的剂量为2至6毫希沃特。
结论
结果表明放射性敷贴手术对外科医生是安全的，但敷贴操作时间应减至最短。外科医生每年手术不应超过100至200例。
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