巻号一覧
66 巻, 2 号
選択された号の論文の7件中1～7を表示しています
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巻頭言
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石井 勉2010 年 66 巻 2 号 p. 66_2_I
発行日: 2010/02/20
公開日: 2010/03/04
ジャーナル 認証ありPDF形式でダウンロード (317K)
原著
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渡辺 洋平, 林 雄一郎, 藤井 正純, 木村 美由紀, 杉浦 明弘, 津坂 昌利, 若林 俊彦2010 年 66 巻 2 号 p. 131-136
発行日: 2010/02/20
公開日: 2010/03/04
ジャーナル フリーAn image-guided neurosurgery and neuronavigation system based on magnetic resonance imaging has been used as an indispensable tool for resection of brain tumors. Therefore, accuracy of the neuronavigation system, provided by periodic quality assurance (QA), is essential for image-guided neurosurgery. Two types of accuracy index, fiducial registration error (FRE) and target registration error (TRE), have been used to evaluate navigation accuracy. FRE shows navigation accuracy on points that have been registered. On the other hand, TRE shows navigation accuracy on points such as tumor, skin, and fiducial markers. This study shows that TRE is more reliable than FRE. However, calculation of TRE is a time-consuming, subjective task. Software for QA was developed to compute TRE. This software calculates TRE automatically by an image processing technique, such as automatic template matching. TRE was calculated by the software and compared with the results obtained by manual calculation. Using the software made it possible to achieve a reliable QA system.抄録全体を表示PDF形式でダウンロード (441K) -
信太 圭一, 山本 むつみ, 松本 智晴, 宇都 由美子, 熊本 一朗2010 年 66 巻 2 号 p. 137-143
発行日: 2010/02/20
公開日: 2010/03/04
ジャーナル フリーRecently, the environment of medical treatment in our country has become more strict. The purpose of this study is to find changes in the implementation of diagnostic imaging from the point of view of cost analysis, through the use of diagnosis procedure combination (DPC) data. The patient data has been extracted from the DPC data. We compared patients (n=693) in terms of their daily income, cost, and image examination cost ratio for malignant tumors in lungs. The results of this study indicated the ratio of the image examination cost of 040040xx99100x was 25.2% in the old grading sheet. The ratio of the image examination cost increased 42.4% in the new grading sheet. The implementation of diagnostic imaging was able to be made visible simply by analyzing the cost. We found one of the methodologies that connected the improvement of that standard treatment with the examination of each DPC.抄録全体を表示PDF形式でダウンロード (570K)
ノート
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平野 透, 熊谷 亜希子, 鈴木 瑞穂, 本間 修一, 宮地 利明2010 年 66 巻 2 号 p. 144-152
発行日: 2010/02/20
公開日: 2010/03/04
ジャーナル フリーTo improve of cerebral blood vessel visualization and reduce cone beam artifacts from high absorbance materials such as bone structure in 3D-CTA of cerebral blood vessels, we suggest that a non-helical overlapping scan (NHOS) be used. We found that the NHOS and the conventional helical scan optimized the conditions for clinical use of the NHOS. Z-resolution in the NHOS was much higher than that in the non-helical scan without slice overlap. FWHM of the NHOS were thin, about 47%, in comparison with that of the helical scan, and NHOS was superior in Z-resolution to that of the helical scan. Moreover, the NHOS had very few artifacts caused by the skull, and was useful for 3D-CTA of cerebral blood vessels.抄録全体を表示PDF形式でダウンロード (687K)
特別企画 名誉会員インタビュー
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杜下 淳次2010 年 66 巻 2 号 p. 153-157
発行日: 2010/02/20
公開日: 2010/03/04
ジャーナル 認証ありPDF形式でダウンロード (460K)
教育講座−研究成果を世界に向けて発信しよう!−
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田中 利恵2010 年 66 巻 2 号 p. 158-168
発行日: 2010/02/20
公開日: 2010/03/04
ジャーナル 認証ありPDF形式でダウンロード (897K)
JIRAトピックス
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(社)日本画像医療システム工業会2010 年 66 巻 2 号 p. 169-171
発行日: 2010/02/20
公開日: 2010/03/04
ジャーナル 認証ありPDF形式でダウンロード (915K)
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