Stovall M
Department of Radiation Physics, The University of Texas M.D. Anderson Cancer Center, Houston, USA.
Otolaryngol Head Neck Surg. 1996 Nov;115(5):395-8. doi: 10.1177/019459989611500505.
Nasopharyngeal implants of radium sources were used in the 1940s and 1950s to treat children with otitis media and military personnel who had aerotitis media. Individuals received one or more treatments, typically for a total of 30 to 50 milligram-hours (mgh). Documentation of treatment parameters, including source strength and treatment times, allows estimation of organ doses in these patients. For example, for 40 mgh, radiation-absorbed doses to adjacent organs in an adult are estimated as follows: brain, 3; pituitary gland, 16; salivary glands, 8.5; and thyroid gland, 1.4 cGy. For a child 6 years of age, the doses for 40 mgh are: brain, 4; pituitary gland, 27; salivary glands, 11; and thyroid gland, 3.1 cGy. beta-Particles, in addition to gamma-rays, produce a high dose within a few millimeters of the source, but beyond 10 mm the dose is due to gamma-rays alone.
20世纪40年代和50年代，人们使用镭源鼻咽植入物来治疗患有中耳炎的儿童和患有航空性中耳炎的军人。患者接受一次或多次治疗，通常总剂量为30至50毫克小时（mgh）。治疗参数的记录，包括源强度和治疗时间，有助于估算这些患者的器官剂量。例如，对于40 mgh的剂量，成人相邻器官的辐射吸收剂量估计如下：脑，3；垂体，16；唾液腺，8.5；甲状腺，1.4 cGy。对于6岁的儿童，40 mgh的剂量为：脑，4；垂体，27；唾液腺，11；甲状腺，3.1 cGy。除了伽马射线外，β粒子在源的几毫米范围内产生高剂量，但在10毫米以外，剂量仅由伽马射线产生。
