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Impact of preoperative chemoradiotherapy using concurrent S-1 and CPT-11 on long-term clinical outcomes in locally advanced rectal cancer

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World Journal of Gastrointestinal Oncology 2020年第3期12卷 311-322页

作者： Kei Kimura Naohito Beppu hiroshi doi Kozo Kataoka Tomoki Yamano Motoi Uchino Masataka Ikeda Hiroki Ikeuchi Naohiro Tomita Division of Lower Gastrointestinal Surgery Department of SurgeryHyogo College of MedicineNishinomiyaHyogo 663-8501Japan Department of Radiology Hyogo College of MedicineNishinomiyaHyogo 663-8501Japan Department of Radiation Oncology Kindai University Faculty of MedicineSayamaOsaka 589-8511Japan Department of Inflammatory Bowel Disease Division of SurgeryHyogo College of MedicineNishinomiyaHyogo 663-8501Japan

BACKGROUND Preoperative chemoradiotherapy regimens using a second drug for locally advanced rectal cancer are still under clinical *** To investigate the clinical outcomes of patients with locally advanced rectal cancer treated with preoperative chemoradiotherapy using tegafur/gimeracil/oteracil(S-1)plus irinotecan(CPT-11).METHODS This was a single-center retrospective study of 82 patients who underwent radical surgery for rectal cancer after chemoradiotherapy with S-1(80 mg/m2/d),CPT-11(60 mg/m2/d),and radiation(total 45 Gy)between 2009 and *** median follow-up was 51 mo(range:17–116 mo).RESULTS Twenty-nine patients(35.4%)had T3 or T4 rectal cancer with mesorectal fascia invasion,36(43.9%)had extramural vascular invasion,24(29.8%)had N2 rectal cancer and eight(9.8%)had lateral lymph node *** relative dose intensity was 90.1%for S-1 and 92.9%for ***-nine patients(96.3%)underwent R0 *** regard to pathological response,13 patients(15.9%)had a pathological complete response and 52(63.4%)a good response(tumor regression grade 2/3).The 5-year local recurrence-free survival,relapsefree survival and overall survival rates were 90.1%,72.5%and 91.3%,*** analyzed the risk factors for local recurrence-free survival by Cox regression analysis and none were *** described risk factors such as T4 stage,mesorectal fascia invasion or lateral lymph node swelling were not detected as negative factors for local recurrence-free *** We demonstrated good compliance and favorable tumor regression in patients with locally advanced rectal cancer treated with preoperative S-1 and CPT-11.

关键词： Preoperative chemoradiotherapy Rectal cancer Irinotecan Tegafur/gimeracil/oteracil Neoadjuvant chemoradiotherapy Radiation therapy

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离子微探针分析在半导体器件问题上的一些应用

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微纳电子技术 1977年第2期 64-71页

作者： hiroshi doi 王家源

为了改善离子微探针质量分析仪的探测灵敏度、精确性及重复性,研究了增加二次离子的数量及降低本底噪声的方法。接着进行了硅片中的杂质(硼、磷、砷及锑)的定量分析。获得了最低的可探测浓度和束径的依赖关系。而且,为了在样品表面上任... 详细信息

为了改善离子微探针质量分析仪的探测灵敏度、精确性及重复性,研究了增加二次离子的数量及降低本底噪声的方法。接着进行了硅片中的杂质(硼、磷、砷及锑)的定量分析。获得了最低的可探测浓度和束径的依赖关系。而且,为了在样品表面上任意所欲的面积上进行分析并改善纵向分析的准确性,研制了一种用一个掩模和高速扫描相结合的新方法,用以确定被分析的面积。对具有非常复杂管芯图形的功率晶体管衬底进行了表面分析,其结果证明这个方法是有效的。

关键词：离子电流微探针表面分析功率晶体管束径巨型晶体管电力电子器件半导体器件电子设备硅片杂质浓度纵向分布质谱线硅衬底掩模法

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Predicting Delivery Error Using a DICOM-RT Plan for Volumetric Modulated Arc Therapy

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2014年第2期3卷 82-87页

作者： Hideharu Miura Masao Tanooka Masayuki Fujiwara Yasuhiro Takada hiroshi doi Soichi Odawara Kengo Kosaka Norihiko Kamikonya Shozo Hirota Department of Radiological Technology Hyogo College of Medicine College Hospital Hyogo Mukogawa-cho Nishinomiya City Hyogo Japan Department of Radiology Hyogo College of Medicine 1-1 Mukogawa-cho Nishinomiya City Hyogo Japan

The purpose of this study was to investigate the prediction of mechanical error using DICOM-RT plan parameters for volumetric modulated arc therapy (VMAT). We created plans for gantry rotation arcs of 360° and 180° (full-arc and half-arc VMAT) for six maxillary sinus cancer cases using a Monaco treatment planning system, and delivered the doses with a linear accelerator. We calculated DICOM-RT plan parameters, including gantry, multileaf collimator (MLC) positions and Monitor Units (MU). We compared plans with regard to gantry angle per MU (degrees/MU) and MLC travel per MU (mm/MU) for each segment. Calculated gantry angle/MLC position speeds and errors were evaluated by comparison with the log file. On average, the half-arc VMAT plan resulted in 47% and 35% fewer degrees/MU and mm/MU than the full-arc VMAT plan, respectively. The root mean square (r.m.s.) gantry and MLC speeds showed a linear relationship with calculated degrees/MU and mm/MU, with coefficients of determination (R2) of 0.86 and 0.72, respectively. The r.m.s. gantry angle and MLC position errors showed a linear relationship with calculated degrees/MU and mm/MU with R2 of 0.63 and 0.76, respectively. Deviations from plan parameters were related to mechanical error for VMAT, and provided quantitative information without the need for VMAT delivery. These parameters can be used in the selection of treatment planning.

关键词： Volumetric-Modulated Arc Therapy DICOM-RT Plan Patient-Specific QA Radiotherapy Planning Computer-Assisted

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Feasibility of Estimating Patient-Specific Dose Verification Results Directly from Linear Accelerator Log Files in Volumetric Modulated Arc Therapy

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2016年第4期5卷 317-328页

作者： Kengo Kosaka Masao Tanooka hiroshi doi Hiroyuki Inoue Kazuo Tarutani Hitomi Suzuki Yasuhiro Takada Masayuki Fujiwara Norihiko Kamikonya Shozo Hirota Department of Radiology Hyogo College of Medicine Nishinomiya Japan Department of Radiological Technology Hyogo College of Medicine College Hospital Nishinomiya Japan

The feasibility of estimating patient-specific dose verification results directly from linear accelerator (linac) log files has been investigated for prostate cancer patients who undergo volumetric modulated arc therapy (VMAT). Twenty-six patients who underwent VMAT in our facility were consecutively selected. VMAT plans were created using Monaco treatment planning system and were transferred to an Elekta linac. During the beam delivery, dynamic machine parameters such as positions of the multi-leaf collimator and the gantry were recorded in the log files;subsequently, root mean square (rms) values of control errors, speeds and accelerations of the above machine parameters were calculated for each delivery. Dose verification was performed for all the plans using a cylindrical phantom with diodes placed in a spiral array. The gamma index pass rates were evaluated under 3%/3 mm and 2%/2 mm criteria with a dose threshold of 10%. Subsequently, the correlation coefficients between the gamma index pass rates and each of the above rms values were calculated. Under the 2%/2 mm criteria, significant negative correlations were found between the gamma index pass rates and the rms gantry angle errors (r = 0.64, p < 0.001) as well as the pass rates and the rms gantry accelerations (r = 0.68, p < 0.001). On the other hand, the rms values of the other dynamic machine parameters did not significantly correlate with the gamma index pass rates. We suggest that the VMAT quality assurance (QA) results can be directly estimated from the log file thereby providing potential to simplify patient-specific prostate VMAT QA procedure.

关键词： Radiotherapy VMAT Log File Patient Specific QA Correlation Gamma Index

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DICOM-RT Plan Complexity Verification for Volumetric Modulated Arc Therapy

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2014年第3期3卷 117-124页

作者： Hideharu Miura Masao Tanooka Hiroyuki Inoue Masayuki Fujiwara Kengo Kosaka hiroshi doi Yasuhiro Takada Soichi Odawara Norihiko Kamikonya Shozo Hirota Department of Radiological Technology Hyogo College of Medicine College Hospital Nishinomiya City Japan Department of Radiology Hyogo College of Medicine Nishinomiya City Japan

The purpose of this study was to investigate the relationship between plan parameters verified with DICOM-RT and dosimetric results for volumetric modulated arc therapy (VMAT). We investigated three treatment locations: prostate cancer (ten cases), maxillary sinus cancer (four cases), and malignant pleura mesothelioma (four cases) with treatment plans generated by a MonacoTM treatment planning system (TPS), and delivered with an Elekta SynergyTM linear accelerator. We calculated plan parameters, including gantry and multileaf collimator (MLC) positions, Monitor Units (MU), and millimeters of MLC motion per degree of gantry rotation (mm/degree), and performed quality assurance (QA) with a DICOM-RT plan verification system. We measured the VMAT dose with a two-dimensional diode array detector. The average gamma passing rate with percent dose acceptance criteria and distance to agreement criteria of 2 mm and 2% (2 mm/2%) were 97.4%, 97.8% and 92.0% for prostate cancer, maxillary sinus cancer, and malignant pleural mesothelioma, respectively. The mean 95th percentile value for DICOM-calculated mm/degree was 4.0, 5.2, and 11.1 for prostate cancer, maxillary sinus cancer, and malignant pleural mesothelioma, respectively. The gamma passing rate showed a correlation with calculated mm/degree, with a coefficient of determination (R2) of 0.60. Higher calculated mm/degree values led to increased dosimetric errors. We conclude that dose distribution calculated by a TPS is more reliable at smaller mm/degree.

关键词： Volumetric Modulated Arc Therapy Quality Assurance Radiation Treatment Planning Radiation Dosimetry

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Usability of Deformable Image Registration for Adaptive Radiotherapy in Head and Neck Cancer and an Automatic Prediction of Replanning

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2017年第1期6卷 10-20页

作者： Masao Tanooka hiroshi doi Toshihisa Ishida Kazuhiro Kitajima Tsukasa Wakayama Toshiyuki Sakai Hiroyuki Inoue Noriko Kotoura Kengo Kosaka Kazuo Tarutani Masayuki Fujiwara Norihiko Kamikonya Department of Radiological Technology Hyogo College of Medicine College Hospital Nishinomiya Japan Department of Radiology Hyogo College of Medicine Hyogo Nishinomiya Japan

Deformable image registration (DIR) has been an important component in adaptive radiotherapy (ART). Our goal was to examine the accuracy of ART using the dice similarity coefficient (DSC) and to determine the optimal timing of replanning. A total of 22 patients who underwent volume modulated arc therapy (VMAT) for head and neck (H&N) cancers were prospectively analyzed. The planning target volume (PTV) was to receive a total of 70 Gy in 33 fractions. A second planning CT scan (rescan) was performed at the 15th fraction. The DSC was calculated for each structure on both CT scans. The continuous variables to predict the need for replanning were assessed. The optimal cut-off value was determined using receiver operating characteristic (ROC) curve analysis. In the correlation between body weight loss and DSC of each structure, weight loss correlated negatively with DSC of the whole face (rs = -0.45) and the face surface (rs = -0.51). Patients who required replanning tended to have experienced rapid weight loss. The threshold DSC was 0.98 and 0.60 in the whole face and the face surface, respectively. Patients who showed low DSC in the whole face and the face surface required replanning at a significantly high rate (P < 0.05 and P < 0.01). Weight loss correlated with DSC in both the whole face and the face surface (P < 0.05 and P < 0.05). The DSC values in the face predicted the need for replanning. In addition, weight loss tended to correlate with DSC. DIR during ART was found to be a useful tool for replanning.

关键词： Deformable Image Registration Adaptive Radiotherapy Head and Neck Can-cer Dice Similarity Coefficient Volume Modulated Arc Therapy

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Histopathological Evidence for Irradiation Angiopathy in Head and Neck Cancer

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International Journal of Otolaryngology and Head & Neck Surgery 2015年第2期4卷 108-114页

作者： Nobuhiro Uwa Hiroyuki Hao Yoshitane Tsukamoto Tomonori Terada Kosuke Sagawa Takeshi Mohri Takashi Daimon hiroshi doi Yohei Sotsuka Guillaume van Eys Marie-Luce Bochaton-Piallat Seiichi Hirota Masafumi Sakagami Department of Otolaryngology Hyogo College of Medicine Nishinomiya Japan Department of Surgical Pathology Hyogo College of Medicine Nishinomiya Japan Department of Biostatistics Hyogo College of Medicine Nishinomiya Japan Department of Radiology Hyogo College of Medicine Nishinomiya Japan Department of Plastic Surgery Hyogo College of Medicine Nishinomiya Japan Department of Genetics and Cell Biology University of Maastricht Maastricht The Netherlands Department of Pathology and Immunology University of Geneva-CMU Geneva Switzerland

Objective: To evaluate the incidence of cervical angiopathy caused by radiation therapy for head and neck cancer. Methods: Segments of 57 cervical arteries were obtained during surgery for head and neck malignant tumors and divided into two groups (irradiated group and non-irradiated group) based on the treatment prior to vascular resection. In order to evaluate vascular injury after radiation therapy, we examined the degree of medial atrophy, medial fibrosis, smooth muscle cell (SMC) differentiation in the media and intima, intimal hyperplasia and endothelial cell (EC) injury. Sections of arterial segments were stained with hematoxylin-eosin, Elastica van Gieson and Masson’s trichrome, and immunohistochemistry for α-smooth muscle actin (α-SMA), smoothelin, S100A4 and CD31 in the resected vessels was conducted. Results: The median interval between the completion of radiation therapy and vascular resection was nine months. No significant differences were observed between the two groups in terms of medial atrophy, medial fibrosis and intimal hyperplasia. The ratio of the smoothelin-positive area per α-SMA-positive area in the media and the S100A4-positive proportion in the intima, indicating the degree of differentiation of the medial SMC and dedifferentiation of the intimal SMC, respectively, showed no significant differences, despite the tendency toward a lower smoothelin-positive area per α-SMA-positive area in the media of the irradiated arteries. The EC coverage revealed on CD31 immunohistochemistry was significantly decreased, with mural thrombus adhesion, in the irradiated group. Conclusions: The ECs of small arteries are damaged by irradiation. Although we did not confirm the statistical significance of medial SMC dedifferentiation, a decreased expression of smoothelin tended to be observed in the media of the irradiated arteries. Our findings provide histopathological evidence of irradiation angiopathy in head and neck cancer and may help to improve the surgi

关键词： Angiopathy Endothlial Cell Pathology Radiation Head and Neck

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PERCIST用于头颈部鳞状细胞癌患者放化疗疗效评价及预后预测

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中华核医学与分子影像杂志 2018年第12期38卷 839-839页

作者：唐军(译) Takayuki Katsuura Kazuhiro Kitajirma Masayuki Fujiwara Tomonori Terada Nobuhiro Uwa Kazuma Noguchi hiroshi doi Yukihisa Tamaki Rika Yoshida Tatsuya Tsuchitani Masahiro Fujita Koichiro Yamakado 上海交通大学医学院附属苏州九龙医院核医学科 215021 Division of Nuclear Medicine and PET Center Department of Radiology Hyogo College of MedicineNishinomiya Japan

目的探讨PET实体瘤疗效评价标准(PERCIST)评价头颈部鳞状细胞癌(HNSCC)患者放化疗疗效及预测复发和死亡的价值。方法42例患者(平均年龄63岁,范围20~79岁)在放化疗前及放化疗后约3个月(平均95d,范围70~119d)行脱氧葡萄糖(FDG)-PET/CT显像... 详细信息

目的探讨PET实体瘤疗效评价标准(PERCIST)评价头颈部鳞状细胞癌(HNSCC)患者放化疗疗效及预测复发和死亡的价值。方法42例患者(平均年龄63岁,范围20~79岁)在放化疗前及放化疗后约3个月(平均95d,范围70~119d)行脱氧葡萄糖(FDG)-PET/CT显像,其中包括10例鼻咽癌、13例口咽癌、11例下咽癌及8例喉癌。与PERCIST相关的无进展生存时间(PFS)和总生存时间(OS)采用对数秩检验和Cox回归分析进行统计学处理。结果PERCIST确定的完全代谢反应(CMR,即病灶FDG摄取降低至肝脏的平均活度水平以下或病灶FDG摄取与周围组织无明显差别)、部分代谢反应[PMR,即经去脂体质量校正的高峰标准摄取值(SULpeak)下降30%及以上]、稳定代谢反应(SMD,即FDG摄取无明显变化)和病灶代谢增加(PMD,即SULpeak增加30%及以上)的患者数分别为30例(71.4%)、9例(21.4%)、3例(7.1%)和0例。

关键词：头颈部鳞状细胞癌 FDG-PET/CT PERCIST 治疗效果预后

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Postoperative complications of umbilical loop colostomy for anorectal malformations in neonates compared with the conventional abdominal stoma: a non-randomized study

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World Journal of Pediatric Surgery 2019年第1期2卷 21-23页

作者： Tatsuma Sakaguchi Yoshinori Hamada Takeshi Shirai hiroshi Hamada Yusuke Shigeta Yusuke Nakamura Takashi doi Department of Surgery Kansai Medical UniversityOsakaJapan

background We previously reported a pilot study of temporary umbilical loop colostomy for neonates with intermediate-type anorectal malformations(ARM)and recommended this technique because of its cosmetic *** herein report the postoperative complications of umbilical stomas(US)compared with traditional abdominal stomas(AS).Methods From our institutional prospective database,we analyzed the patients with ARMs who underwent stoma creation at Kansai Medical University Hospital from January 1995 to November *** surgical technique used to create the US had been performed since *** US and AS were made for 12 and 27 patients with ARMs,*** postoperative complication rates in patients who underwent US and AS had no significant difference(17%and 11%,p=0.6).The complications comprised a wound infection(one case of US),ileus(one case each of US and AS),mucosal prolapse(one case of AS),and depression(one case of AS).No emergency surgery was required for these *** For patients with ARMs,the umbilicus appears to be a safe alternative site for temporary loop colostomy.

关键词： complications abdominal wound

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Development of a Topic Providing System with Inferences of Behaviors from Daily Life

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Computer Technology and Application 2013年第3期4卷 144-152页

作者： Seiji Suzuki Go Tanaka Chiaki doi Tomohiro Nakagawa hiroshi Inamura Ken Ohta Tadanori Mizuno hiroshi Mineno Department of Computer Science Graduate School of lnformatics Shizuoka University Hamamatsu Shizuoka 432-8011 Japan Research Laboratories NTT DOCOMO Inc. Yokosuka Kanagawa 239-8536 Japan Department of lnformation Science Aichi Institute of Technology Toyota Aichi 470-0392 Japan Department of Computer Science Faculty of lnformatics Shizuoka University Hamamatsu Shizuoka 432-8011 Japan

Face-to-face communication is very important skill to share intentions. However, many people in the modem world feel that they are deficient in face-to-face communication. So, we feel that it is necessary to support their face-to-face communication using information technologies. We have developed a topic-providing system that can infer behaviors from daily life and provides users with information about their conversation partner, including that on his hometown, hobbies and life logs when face-to-face communication is initiated. The life logs are details about a user＇s life, and are generated using a Bayesian network on the basis of sensor data provided by our system. This system enables users to access other users＇ information of behaviors from the accumulated life logs and it utilizes this infbrmation to generate topics for conversation. We evaluated the accuracy with which proposal system inferred behaviors to confirm whether exact life log generation is possible. And we also evaluated the proposed system by administering a questionnaire to confirm whether the proposed system can support face-to-face communication.

关键词： Face-to-face communication support inference of behaviors Bayesian network life log sensor network.

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