検索結果 1212 件
| 著者 | Asagi, Akinori| Ohta, Koji| Nasu, Junichirou| Tanada, Minoru| Nadano, Seijin| Nishimura, Rieko| Teramoto, Norihiro| Yamamoto, Kazuhide| Inoue, Takeshi| Iguchi, Haruo| |
|---|---|
| 発行日 | 2013-01 |
| 出版物タイトル | Pancreas |
| 巻 | 42巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/AMO/50413 |
|---|---|
| フルテキストURL | 67_3_191.pdf |
| 著者 | Binti Md Nor, Nurliza| Kusumoto, Tomoyuki| Inoue, Seiji| Nakamura, Keiichiro| Seki, Noriko| Hongo, Atsushi| Kodama, Junichi| Hiramatsu, Yuji| |
| 抄録 | Struma ovarii is a rare neoplasm that accounts for approximately 0.3ｵ of ovarian tumors. Due to its ultrasound morphology, which is quite similar to that of malignant ovarian carcinoma, most struma ovarii cases are open operated with laparotomy rather than laparoscopy. We present 3 cases of struma ovarii, which were diagnosed preoperatively by imaging studies and removed by laparoscopic surgery. All patients were premenopausal women between ages 31‒50. The magnetic resonance imaging (MRI) findings were complex masses composed of multiple cysts and solid components with T2-hypointense regions as well as multiple T1-hyperintense cystic areas, findings that are typical for struma ovarii. A combination of plain computed tomography (CT), positron emission tomography (PET)-CT, and scintigraphy was useful for diagnosis. Laboratory examination revealed elevated serum thyroglobulin, which led to the diagnosis of struma ovarii. Laparoscopic surgeries were performed without rupturing the tumors. Although it has been difficult to differentiate between struma ovarii and malignant tumors by conventional methods, recently MRI techniques appear make it possible to diagnose struma ovarii preoperatively from the abovementioned imaging characteristic, together with laboratory data. As for treatment, we think laparoscopy could be successful for struma ovarii, but the surgeon must be careful not to rupture the tumor intra-abdominally in order to prevent dissemination, which could lead to malignancy. |
| キーワード | struma ovarii ovarian neoplasms MRI laparoscopic surgery |
| Amo Type | Case Report |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2013-06 |
| 巻 | 67巻 |
| 号 | 3号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 191 |
| 終了ページ | 195 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2013 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 23804143 |
| Web of Science KeyUT | 000320747900009 |
| JaLCDOI | 10.18926/AMO/49672 |
|---|---|
| フルテキストURL | 67_2_123.pdf |
| 著者 | Tanabe, Shunsuke| Shirakawa, Yasuhiro| Takehara, Yuko| Maeda, Naoaki| Katsube, Ryoichi| Ohara, Toshiaki| Sakurama, Kazufumi| Noma, Kazuhiro| Fujiwara, Toshiyoshi| |
| 抄録 | An 80-year-old woman, who had been administered α-glucosidase inhibitor for diabetes, was brought to the hospital with the sensation of abdominal fullness and pain. Abdominal computed tomography indicated pneumatosis cystoides intestinalis (PCI) in the small intestinal wall, with free air within the abdomen. A blood examination showed no increases in white blood cells or C-reactive protein level. The patientʼs condition improved with conservative therapy. PCI with pneumoperitoneum induced by α-glucosidase inhibitor is rare, with only 27 cases (excluding the present case) reported in Japan to date. In PCI with pneumoperitoneum, differentiation from gastrointestinal perforation is important and following the clinical symptoms over time is vital. |
| キーワード | pneumatosis cystoides intestinalis pneumoperitoneum α-glucosidase inhibitor |
| Amo Type | Case Report |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2013-04 |
| 巻 | 67巻 |
| 号 | 2号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 123 |
| 終了ページ | 128 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2013 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 23603930 |
| Web of Science KeyUT | 000317801700008 |
| JaLCDOI | 10.18926/AMO/49671 |
|---|---|
| フルテキストURL | 67_2_117.pdf |
| 著者 | Sadamori, Hiroshi| Yagi, Takahito| Shinoura, Susumu| Umeda, Yuzo| Yoshida, Ryuichi| Sato, Daisuke| Nobuoka, Daisuke| Utsumi, Masashi| Fujiwara, Toshiyoshi| |
| 抄録 | We present a case of living donor liver transplantation to a 3-year disease-free survivor of liver resection for hepatocellular carcinoma (HCC) with major portal vein invasion. A 48-year-old man had HCC in the right lobe with a portal venous tumor thrombus extending into the left portal vein. An extended right lobectomy with thrombectomy was performed to remove the thrombus. Three years after liver resection, the patient experienced liver failure, with massive ascites and jaundice due to the formation of a thrombus in the main and left portal veins. During the 3 years after liver resection, no metastasis or recurrence of HCC had been detected, and tumor markers had been within normal ranges. The portal venous thrombus did not show any arterial enhancement under contrast-enhanced computed tomography, suggesting that the co-existence of any HCC component in the portal venous thrombus may have been negative. Based on these findings, living donor liver transplantation was performed using a right lobe graft from the patientʼs son. The patient is alive at 87 months after the transplantation, with no evidence of HCC recurrence. |
| キーワード | living donor liver transplantation hepatocellular carcinoma portal vein invasion liver resection |
| Amo Type | Case Report |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2013-04 |
| 巻 | 67巻 |
| 号 | 2号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 117 |
| 終了ページ | 121 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2013 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 23603929 |
| Web of Science KeyUT | 000317801700007 |
| JaLCDOI | 10.18926/AMO/49669 |
|---|---|
| フルテキストURL | 67_2_105.pdf |
| 著者 | Alafate, Aierken| Shinya, Takayoshi| Okumura, Yoshihiro| Sato, Shuhei| Hiraki, Takao| Ishii, Hiroaki| Gobara, Hideo| Kato, Katsuya| Fujiwara, Toshiyoshi| Miyoshi, Shinichiro| Kaji, Mitsumasa| Kanazawa, Susumu| |
| 抄録 | We retrospectively evaluated the accumulation of fluorodeoxy glucose (FDG) in pulmonary malignancies without local recurrence during 2-year follow-up on positron emission tomography (PET)/computed tomography (CT) after radiofrequency ablation (RFA). Thirty tumors in 25 patients were studied (10 non-small cell lung cancers;20 pulmonary metastatic tumors). PET/CT was performed before RFA, 3 months after RFA, and 6 months after RFA. We assessed the FDG accumulation with the maximum standardized uptake value (SUVmax) compared with the diameters of the lesions. The SUVmax had a decreasing tendency in the first 6 months and, at 6 months post-ablation, FDG accumulation was less affected by inflammatory changes than at 3 months post-RFA. The diameter of the ablated lesion exceeded that of the initial tumor at 3 months post-RFA and shrank to pre-ablation dimensions by 6 months post-RFA. SUVmax was more reliable than the size measurements by CT in the first 6 months after RFA, and PET/CT at 6 months post-RFA may be more appropriate for the assessment of FDG accumulation than that at 3 months post-RFA. |
| キーワード | fluorodeoxy glucose (FDG) positron emission tomography (PET) standardized uptake value (SUV) radiofrequency ablation (RFA) non-small cell lung cancer (NSCLC) |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2013-04 |
| 巻 | 67巻 |
| 号 | 2号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 105 |
| 終了ページ | 112 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2013 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 23603927 |
| Web of Science KeyUT | 000317801700005 |
| 関連URL | http://ousar.lib.okayama-u.ac.jp/metadata/50688 |
| 著者 | Hirakawa, Tomoko| Kato, Jun| Okumura, Yoshihiro| Hori, Keisuke| Takahashi, Sakuma| Suzuki, Hideyuki| Akita, Mitsuhiro| Higashi, Reiji| Saito, Shunsuke| Kaji, Eisuke| Uraoka, Toshio| Hiraoka, Sakiko| Yamamoto, Kazuhide| |
|---|---|
| 発行日 | 2012-02 |
| 出版物タイトル | Journal of Gastroenterology |
| 巻 | 47巻 |
| 号 | 2号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 稲田 涼| 永坂 岳司| 母里 淑子| 楳田 祐三| 久保田 暢人| 森川 達也| 近藤 喜太| 宇野 太| 貞森 裕| 八木 孝仁| 藤原 俊義| |
|---|---|
| 発行日 | 2013-04-01 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 125巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 早瀬 仁志| 徳永 浩司| 中山 敏男| 杉生 憲志| 西田 あゆみ| 有光 帥二| 菱川 朋人| 小野 成紀| 太田 信| 伊達 勲| |
|---|---|
| 発行日 | 2013-04-01 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 125巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/49320 |
|---|---|
| フルテキストURL | mfe_047_001_018.pdf |
| 著者 | Kanatani, Kenichi| |
| 抄録 | We summarize techniques for optimal geometric estimation from noisy observations for computer vision applications. We first discuss the interpretation of optimality and point out that geometric estimation is different from the standard statistical estimation. We also describe our noise modeling and a theoretical accuracy limit called the KCR lower bound. Then, we formulate estimation techniques based on minimization of a given cost function: least squares (LS), maximum likelihood (ML), which includes reprojection error minimization as a special case, and Sampson error minimization. We describe bundle adjustment and the FNS scheme for numerically solving them and the hyperaccurate correction that improves the accuracy of ML. Next, we formulate estimation techniques not based on minimization of any cost function: iterative reweight, renormalization, and hyper-renormalization. Finally, we show numerical examples to demonstrate that hyper-renormalization has higher accuracy than ML, which has widely been regarded as the most accurate method of all. We conclude that hyper-renormalization is robust to noise and currently is the best method. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2013-01 |
| 巻 | 47巻 |
| 開始ページ | 1 |
| 終了ページ | 18 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 著作権者 | Copyright © by the authors |
| 論文のバージョン | publisher |
| NAID | 120005232372 |
| 著者 | 平川 智子| |
|---|---|
| 発行日 | 2012-09-27 |
| 出版物タイトル | |
| 資料タイプ | 学位論文 |
| 著者 | 長瀧 寛之| |
|---|---|
| 発行日 | 2013-01-15 |
| 出版物タイトル | 情報処理学会論文誌 |
| 巻 | 54巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | Kanesaka, Naomi| Nakamura, Hiroaki| |
|---|---|
| 発行日 | 2013-01 |
| 出版物タイトル | Mathematical Journal of Okayama University |
| 巻 | 55巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/mjou/49105 |
| 著者 | Linton, S. A.| Mpono, Z. E.| |
|---|---|
| 発行日 | 2013-01 |
| 出版物タイトル | Mathematical Journal of Okayama University |
| 巻 | 55巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/mjou/49102 |
| JaLCDOI | 10.18926/bgeou/49021 |
|---|---|
| タイトル（別表記） | Computation Algorithm Revisited for Normal Probability: Computer-assisted Algorithm for Binomial Approximation (1) |
| フルテキストURL | bgeou_151_093_107.pdf |
| 著者 | 平井 安久| 中村 忠| |
| 抄録 | 従来とは逆に２項確率で正規確率を近似する計算法を提案する。この近似計算法は，中心 極限定理，数値微分，低い次数の多項式と巨大な n に対する２項確率の直接計算法を組み 合わせて構成される。これまでの他の正規確率計算法と違い，コンピュータの機能を十分に 利用した方法である。数値実験により，関数項級数展開を用いた近似方法，有理関数近似を 用いた近似方法，連分数展開を用いた近似方法に比べ，提案した方法は広範囲において絶対 相対誤差の基準ではるかに良いことも示された。 |
| キーワード | ２項近似 近似法 アルゴリズム 正規確率 |
| 出版物タイトル | 岡山大学大学院教育学研究科研究集録 |
| 発行日 | 2012-11-27 |
| 巻 | 151巻 |
| 開始ページ | 93 |
| 終了ページ | 107 |
| ISSN | 1883-2423 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120005053296 |
| 著者 | 三宅 進| 宮村 能子| |
|---|---|
| 発行日 | 2012-12-03 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 124巻 |
| 号 | 3号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | Matsuura, Koji| Kuroda, Yuka| Yamashita, Keisuke| Funahashi, Hiroaki| |
|---|---|
| 発行日 | 2010-10-12 |
| 出版物タイトル | Journal of Reproduction and Development |
| 巻 | 57巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/AMO/48967 |
|---|---|
| フルテキストURL | 66_5_423.pdf |
| 著者 | Furukawa, Masashi| Izumi, Sadanobu| Tsukuda, Kazunori| Tokumo, Masaki| Sakurai, Jun| Mano, Shohey| |
| 抄録 | An 81-year-old man was found to have a pancreatic head tumor on abdominal computed tomography (CT) performed during a follow-up visit for sigmoid colon cancer. The tumor had a diameter of 35mm on the CT scan and was diagnosed as pancreatic head carcinoma T3N0M0. The patient was treated with pylorus-preserving pancreaticoduodenectomy. Histopathological examination showed that the tumor had grown within a hollow structure, was contiguous with a duodenal diverticulum, and had partially invaded the pancreas. Immunohistochemistry results were as follows:CK7 negative, CK20 positive, CD10 negative, CDX2 positive, MUC1 negative, MUC2 positive, MUC5AC negative, and MUC6 negative. The tumor was diagnosed as duodenal carcinoma from the duodenal diverticulum. Preoperative imaging showed that the tumor was located in the head of the pancreas and was compressing the common bile duct, thus making it appear like pancreatic cancer. To the best of our knowledge, this is the second report of a case of duodenal carcinoma from a duodenal diverticulum mimicking pancreatic carcinoma. |
| キーワード | duodenal carcinoma duodenal diverticulum pancreatic carcinoma |
| Amo Type | Case Report |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2012-10 |
| 巻 | 66巻 |
| 号 | 5号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 423 |
| 終了ページ | 427 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2012 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 23093061 |
| Web of Science KeyUT | 000310253900007 |
| JaLCDOI | 10.18926/AMO/48966 |
|---|---|
| フルテキストURL | 66_5_417.pdf |
| 著者 | Horio, Takuya| Ogata, Sho| Tsujimoto, Hironori| Akase, Takayoshi| Takahata, Risa| Yaguchi, Yoshihisa| Maehara, Tadaaki| Hase, Kazuo| |
| 抄録 | Esophageal cancers usually exhibit lymph-node metastases. Although a solitary lymph-node metastasis is occasionally found, the involvement of an intrathoracic paraaortic node is rare. We present here an intrathoracic mid-esophageal cancer case in which an accompanying solitary retroaortic mass was found within the posterior mediastinum by integrated positron emission tomography/computed tomography. For diagnosis, thoracoscopic resection of the mass was performed from a left thoracic approach, and histology revealed it to be a squamous cell carcinoma metastasized from the esophageal cancer. Upon radical esophagectomy after neoadjuvant therapy as a T3N1M0 Stage IIIa (AJCC/UICC) cancer, the esophageal cancer was found to have invaded unexpectedly deeply in the vicinity of the descending aorta. Another lymph node within the paraaortic region was also involved (T4N1M0 Stage IIIc). The present case and other cases we review here inform our understanding of metastasis to intrathoracic paraaortic nodes as follows:1) its existence may indicate extensive lymph-node metastasis or direct tumor invasion nearby, and 2) it may be accompanied by other lymph-node involvements in this region, even if it appears solitary upon preoperative investigation. Thus, for radical esophagectomy, sufficient lymph-node dissection is required, even at locations not reached by the usual right thoracic approach. Definitive chemoradiotherapy may be a better choice for preoperatively recognized T3 esophageal cancer when the cancer is accompanied by paraaortic lymph node metastasis. |
| キーワード | esophageal cancer intrathoracic paraaortic lymph node solitary metastasis |
| Amo Type | Case Report |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2012-10 |
| 巻 | 66巻 |
| 号 | 5号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 417 |
| 終了ページ | 421 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2012 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 23093060 |
| Web of Science KeyUT | 000310253900006 |
| 著者 | Itoh, Ryota| Nagataki, Hiroyuki| Ooshita, Fukuhito| Kakugawa, Hirotsugu| Masuzawa, Toshimitsu| |
|---|---|
| 発行日 | 2007-07-10 |
| 出版物タイトル | 8th International Conference on Information Technology Based Higher Education and Training |
| 資料タイプ | 会議発表論文 |