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The development of the portable x-ray equipment for dentistry.

便携式牙科X射线设备的开发。

基本信息

批准号：
09671930
负责人：
SUZUKI Yosuke
金额：
$ 2.11万
依托单位：
Ohu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

项目摘要

The purpose of this research is to establish an X-ray examination which is safe and useful for the home dental treatment. A portable X-ray equipment was developed in order to reduce the dose of patients, dentists and assistant persons using a X-ray CCD sensor. A protection shade attached to the irradiation cone of the portable X-ray equipment was developed with clear protection material such as KYOWAGLAS-XA. It could shade from the scattered X-rays of the patient. The irradiation cone was changed to a clear material one so that the positioning of X-ray projection was accomplished easily and safely. A hold device of the X-ray CCD sensor was also developed. It was assembled with two extensible arms and mounting devices. Using this hold device, the X-ray examination could be performed accurately and safely without any dose of assistant person . The maximum dose of dentist was 3.12μSv/sec (0.936μSv/examination) at the distance of 1m from the patient using this portable X-ray equipment. The maximum estimated dose of dentist was 6.75mSv a year by the exposure of 15, 000 tines at the distance of 20cm from the patient. The maximum dose of assistant person or family was 0.9μSv at the distance of 1 m from patient a year by the exposure of 50 times behind the protection shade. As a future subject it seemed that the reduction of the weight of the X-ray head is necessary for the portability.

本研究的目的是建立一种对家庭牙科治疗安全且有用的 X 射线检查方法。为了减少使用 X 射线 CCD 传感器的患者、牙医和助手的剂量，开发了便携式 X 射线设备。使用KYOWAGLAS-XA等透明保护材料开发了附着在便携式X射线设备的照射锥上的保护罩。它可以遮挡患者散射的 X 射线。照射锥体改为透明材料照射锥体，使X射线投影定位轻松、安全。还开发了X射线CCD传感器的保持装置。它由两个可伸缩臂和安装装置组装而成。使用该保持装置，无需任何助手即可准确、安全地进行X射线检查。使用这种便携式X射线设备，距离患者1m处，牙医的最大剂量为3.12μSv/秒（0.936μSv/检查）。牙医每年最大估计剂量为 6.75mSv，15, 000 个尖齿在距患者 20cm 的距离处照射。助手或家属在距患者1m处一年最大照射剂量为0.9μSv，在防护罩后照射50次。作为未来的课题，为了便于携带，减轻X射线头的重量似乎是必要的。