著者

八木 浩史 安友 基勝 高島 宏輔

出版者

一般社団法人 日本医学物理学会

雑誌

放射線医学物理 (ISSN:09188010)

巻号頁・発行日

vol.19, no.4, pp.218-230, 1999 (Released:2012-09-24)

参考文献数

11

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It is very important which the special xray equipment and photosensitive materials merely are prepared but also their maximum ability are shown for mammography which is taken photography of breast tissue having a few absorbed difference and requires showing the detail of change to a morbid state.Especia lly, the physical properties of film are influenced on developing conditions, namely, developing temperature, developing time and developer. In this study, the physical properties were investigated by using some developing conditions.In the results, it has been confirmed, which the temperature dependencies on physical properties of films for mammography are different with developing time and developer.Furthermore, it has been confirmed, which it is very important wh en the maximum ability of the films for mammography is required, the suitable developing temperature must be investigated by using the automatic processor of each institution, that is, by using the developing time and developer of each institution.

著者

八木 浩史 北村 怜子 猿渡 理恵 土居 奈津子 山根 英里子

出版者

公益社団法人日本放射線技術学会

雑誌

日本放射線技術學會雜誌 (ISSN:03694305)

巻号頁・発行日

vol.59, no.6, pp.729-736, 2003-06-20

被引用文献数

5

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The half-value layer (HVL) of an X-ray beam for film-screen mammography is considered an important parameter for image quality and patient dose. Thus, HVL must be measured in accordance with The Manual of Accuracy for Mammography printed by the Japanese Society of Radiological Technology. The manual prescribes exactly the geometry of measurement, chamber position of measurement in the field, selection of chamber, and so on. However, the measurement of HVL is difficult in the actual clinical setting. This study examined the results of failure to perform the measurement of HVL in accordance with the manual for measuring HVL in the clinical setting. The investigation indicated that serious problems do not arise when measuring HVL for routine quality control even if the chamber in the field is not always set according to the manual and if a chamber for radiotherapy or diagnosis is used that is not recommended for soft X-ray by the manual.

著者

八木 浩史 安友 基勝 高島 宏輔

出版者

Japan Society of Medical Physics

雑誌

放射線医学物理 (ISSN:09188010)

巻号頁・発行日

vol.19, no.4, pp.218-230, 1999-12-01

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It is very important which the special xray equipment and photosensitive materials merely are prepared but also their maximum ability are shown for mammography which is taken photography of breast tissue having a few absorbed difference and requires showing the detail of change to a morbid state.<BR>Especia lly, the physical properties of film are influenced on developing conditions, namely, developing temperature, developing time and developer. In this study, the physical properties were investigated by using some developing conditions.<BR>In the results, it has been confirmed, which the temperature dependencies on physical properties of films for mammography are different with developing time and developer.<BR>Furthermore, it has been confirmed, which it is very important wh en the maximum ability of the films for mammography is required, the suitable developing temperature must be investigated by using the automatic processor of each institution, that is, by using the developing time and developer of each institution.