著者

森 茂雄 後藤 眞二 荒井 郁男

出版者

一般社団法人電子情報通信学会

雑誌

電子情報通信学会技術研究報告. SANE, 宇宙・航行エレクトロニクス (ISSN:09135685)

巻号頁・発行日

vol.100, no.637, pp.33-38, 2001-02-16

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震災時に倒壊した家屋や瓦礫に埋もれた生存者を早期に発見するために, 生存者の存在だけでなく存在位置も推定できる一方法を提案する。本方法はパルスドップラ方式のシステムにより, 生存者の呼吸などによる身体のわずかな動きを探知し, 距離を測定する。複数の地点から生存者までの距離を測定し, 生存者の位置を推定するもので, 試作機による実験結果を示す。

著者

周藤 高 松永 成生 末永 潤 猪森 茂雄 藤野 英世

出版者

一般社団法人 日本脳卒中の外科学会

雑誌

脳卒中の外科 (ISSN:09145508)

巻号頁・発行日

vol.38, no.4, pp.228-234, 2010 (Released:2011-04-29)

参考文献数

23

被引用文献数

3 3

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We retrospectively studied 15 patients, 9 men and 6 women aged 17 to 52 years (mean 28.1 years), who developed cyst formation following gamma knife radiosurgery (GKS) at our hospital for cerebral arteriovenous malformation (AVM). The mean nidus volume was 11 cm3 (0.1-26.7 cm3), and the mean prescription dose at the nidus margin was 20.0 Gy (18-28 Gy). Nidus obliteration was obtained in 9 patients, partial obliteration in 5, and no change in 1. Cyst formation was detected from 2.5 to 13.5 years (mean 6.4 years) after GKS. Three patients underwent craniotomy, and 2 received placement of an Ommaya reservoir. Spontaneous regression of cyst was observed in 2 patients. The outcome of the cyst was unknown in 2 patients, because of no response from the neurosurgeon the patients were referred to. Serial magnetic resonance imaging was performed in the other 6 patients because the cyst size was stable or asymptomatic. These findings suggest that cyst formation following GKS is not a “late complication.” Placement of an Ommaya reservoir or cyst-peritoneal shunt is recommended for cysts with obliterated nidus. Craniotomy should be considered if the nidus is not completely obliterated or the cyst is associated with an expanding hematoma. Serial follow-up imaging is recommended for asymptomatic patients.