文献一覧: 日本放射線技術学会雑誌 (雑誌)

1 0 0 0 低線量放射線の生体影響リスクをどう考えるか

著者: 酒井一夫
出版者: 公益社団法人日本放射線技術学会
雑誌: 日本放射線技術学会雑誌 (ISSN:03694305)
巻号頁・発行日: vol.62, no.4, pp.496-502, 2006 (Released:2007-02-23)
参考文献数: 13
被引用文献数: 1

2019-08-08 03:49:55
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1 0 0 0 OA 光電子増倍管の最近の進歩と放射線計測への応用

著者: 田中栄一
出版者: 公益社団法人日本放射線技術学会
雑誌: 日本放射線技術学会雑誌 (ISSN:03694305)
巻号頁・発行日: vol.52, no.3, pp.402-406, 1996-03-01 (Released:2017-06-29)
参考文献数: 12

2019-08-04 22:34:03
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1 0 0 0 OA 最新の80対マルチリーフコリメータの物理特性

著者: 中口裕二大野剛荒木不次男丸山雅人
出版者: 公益社団法人日本放射線技術学会
雑誌: 日本放射線技術学会雑誌 (ISSN:03694305)
巻号頁・発行日: vol.69, no.7, pp.778-783, 2013-07-20 (Released:2013-07-23)
参考文献数: 11
被引用文献数: 1

In this article, we present a physical characterization of the agility™ (Elekta). agility™ is composed of 160 interdigitating multileaf collimators (MLCs) with a width of 5 mm at the isocenter. The physical characterizations that include leaf position accuracy, leakage, field penumbra and the tongue-and-groove (T&G) effect were evaluated using well-commissioned 4, 6 and 10-MV photon beams. The leaf position accuracy was within 0.5 mm for all gantry angles and each MLC. The leakage was 0.44% on average and reached 0.47% at 10 MV: remarkably low due to a new design with tilted leaves. However, the T&G effect occurred due to tilt. It was approximately 20.8% on average and reached 22.3% at 6 MV. The penumbra width increased up to 8.5 mm at a field size of 20×20 cm at 4 MV. High position designed MLCs create a wider penumbra but show lower leakage and large head clearance. Head clearance is an important factor in stereotactic radiotherapy with multiple non-coplanar beams.

2019-07-29 19:47:57
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1 0 0 0 OA 140.V字型Targetを有する回転陽極X線管の考案について : X線小孔法第7報

著者: 北浜清
出版者: 公益社団法人日本放射線技術学会
雑誌: 日本放射線技術学会雑誌 (ISSN:03694305)
巻号頁・発行日: vol.20, no.1, pp.89-90, 1964-07-25 (Released:2017-06-24)

2019-07-11 03:37:44
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1 0 0 0 Intravoxel incoherent motion による運動前後の筋肉毛細血管血流量の評価

著者: 五月女華小倉明夫浅井歩実藤生敦哉
出版者: 公益社団法人日本放射線技術学会
雑誌: 日本放射線技術学会雑誌 (ISSN:03694305)
巻号頁・発行日: vol.74, no.9, pp.861-868, 2018

<p>Capillaries are the most basic and important blood vessel of the circulatory systems. The evaluation of the blood flow may contribute to many studies in future. We evaluated the capillary blood flow change of lower limb muscle over time before and after the exercise used by magnetic resonance imaging-intravoxel incoherent motion (MRI-IVIM) obtained perfusion information. Furthermore, we examined an association between the muscle pain after the exercise and the diffusion weighted image (DWI) indexes. DWI was imaged using multi-b values for a thigh and calf muscles. MRI was performed just after an exercise test, 3, 6, and 24 hours later, and the IVIM index and diffusion index were calculated. Furthermore, we interviewed the degree of the muscle ache 24 hours later. As a result, pseudo diffusion coefficient (D*) and f value as IVIM index increased after-exercise as compared with pre-exercise and decreased in 3 hours later. A similar tendency was found in the apparent diffusion coefficient and the diffusion coefficient as diffusion index. Furthermore, all indexes increased in after exercise from before exercise and decreased with time passed and increased again 24 hours later. In conclusion, IVIM could obtain capillary blood flow information, and it was suggested to contribute for sports medicine in future.</p>

2019-07-09 11:09:41
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1 0 0 0 1.迅速定着剤(日産ラピツトフイクサー)とハイポー定着剤との比較(東京都支部)

著者: 植竹礒吉
出版者: 公益社団法人日本放射線技術学会
雑誌: 日本放射線技術学会雑誌 (ISSN:03694305)
巻号頁・発行日: vol.16, no.2, pp.81-82, 1960

2019-06-14 14:30:37
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1 0 0 0 356. 多段コリメータを用いた乳がんの接線照射(2) : センターオーバライドの適用と多段ウエッジについて(治療-6 乳房照射法-2)

著者: 水谷武雄木村千明内山幸男下田政美
出版者: 公益社団法人日本放射線技術学会
雑誌: 日本放射線技術学会雑誌 (ISSN:03694305)
巻号頁・発行日: vol.47, no.8, 1991

近年、乳房保存照射法につい外科医から、理想的且つ最良な照射方法が期待されている。これは線量の均一性、毎日の照射の再現性そして簡単な照射法が良い。我々はこの問題に早くから取り組み、原体照射システムの乳房接線照射方法を完成した。図-3に示すように、ウエッジを中心よりずらした理想的な照射法による線量分布図を示した

2019-05-12 17:45:32
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1 0 0 0 18.シネフィルム・コダックCFCの臨床使用経験とモノクロフィルム, アグファバン・バリオメレプロフェッショナルのシネフィルム適用について

著者: 片淵哲朗若松孝司土生雅英大島裕
出版者: 公益社団法人日本放射線技術学会
雑誌: 日本放射線技術学会雑誌 (ISSN:03694305)
巻号頁・発行日: vol.40, no.3, 1984

2019-05-09 17:15:27
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1 0 0 0 35. ニュータイプデュープフィルムの評価(感光材料, 関東・東京部会)

著者: 飛田良宣佐々木義久松田雅之松下淳一阿部勝彦武田守雄松本清松浦衡
出版者: 公益社団法人日本放射線技術学会
雑誌: 日本放射線技術学会雑誌 (ISSN:03694305)
巻号頁・発行日: vol.49, no.4, 1993

2019-05-04 03:00:18
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1 0 0 0 OA MRI装置におけるdB/dt値の実測について

著者: 本郷隆治小倉明夫井上博志林浩二石黒秋弘
出版者: 公益社団法人日本放射線技術学会
雑誌: 日本放射線技術学会雑誌 (ISSN:03694305)
巻号頁・発行日: vol.57, no.5, pp.573-580, 2001-05-20 (Released:2017-06-30)
参考文献数: 8

In recent years, as gradient magnetic resonance imaging (MRI)systems have become larger and faster, the influence of low-frequency alternating magnetic fields on the human body during rapid scanning have become significant in terms of patient health. It has become more important to monitor time-variant magnetic fields (dB/dt). From this point of view, we measured the maximum dB/dt for clinical scanning using a self-made search coil and storage oscilloscope that conformed to international standard IEC 60601-2-33(1995). The results were almost the same as the calculated values. In this brief report, we introduce to clinical operators the method of measuring maximum dB/dt.