检索结果-南通市图书馆

The Effect of Treatment Position on Rectal and Bladder Dose-Volume Histograms for Prostate Radiotherapy Planned with 3-Dimensional Conformal Radiotherapy, Intensity-Modulated Radiotherapy and Volumetric Modulated Arc Therapy

引用

International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2014年第2期3卷 88-97页

作者： Kotaro Terashima Katsumasa Nakamura Tomonari Sasaki Saiji Ohga Tadamasa Yoshitake Kazushige Atsumi Makoto Shinoto Kaori Asai Keiji Matsumoto Hidenari Hirata yoshiyuki shioyama Akihiro Nishie Hiroshi Honda Department of Clinical Radiology Graduate School of Medical Sciences Kyushu University Fukuoka Japan Department of Radiology Kyushu University Hospital at Beppu Beppu Japan Kyushu International Heavy Ion Beam Therapy Center Tosu Saga Japan

Purpose: To compare target coverage and organ at risk (OAR) sparing in the supine and prone positions with 3-dimensional conformal radiotherapy (3DCRT), intensity-modulated radiotherapy (IMRT) and volumetric modulated arc therapy (VMAT) in low- and high-risk prostate radiotherapy cases. Materials and Methods: Using magnetic resonance images of five healthy volunteers, six treatment plans (supine 3DCRT, prone 3DCRT, supine IMRT, prone IMRT, supine VMAT and prone VMAT) were generated. Planning target volume 1 (PTV1) was defined as the prostate gland plus the seminal vesicles with adequate margins in a high-risk setting, while PTV2 was defined as prostate only with margins in a low-risk setting. The mean dose for both PTV1 and PTV2 was set at 78 Gy. Plans generated by each of the 3 techniques were compared between the supine and prone positions using dose-volume histograms (DVHs). Results: For PTV1, prone 3DCRT provided a significantly higher D98% than did supine 3DCRT, and its homogeneity index (HI) was significantly better. IMRT and VMAT values did not differ significantly between the prone and supine positions. For PTV2, no values differed significantly between the supine and prone positions under any treatment plan. With respect to OAR, the rectal D mean, D2%, V50, and V60 values of PTV1 were statistically higher in supine 3DCRT than in prone 3DCRT, while there were no significant differences in rectal values between the supine and prone positions with IMRT or VMAT. The rectal Dmean, V50, V60, V70, and V75 values of prone 3DCRT were significantly higher than those of supine IMRT or supine VMAT. There were no significant differences in any values for the rectum and bladder for PTV2. Conclusion: Although prone 3DCRT was found to be superior to supine 3DCRT in terms of rectal sparing in high-risk prostate cancer, IMRT and VMAT techniques could possibly cover this disadvantage.

关键词： Prostate Radiotherapy Dosimetric Comparison 3DCRT IMRT VMAT

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Behaviour of Ru(bpy)<sub><sup>2+</sup>3</sub>on the Surface of Water-Soluble Single-Walled Carbon Nanotubes on Adding Other Cations

引用

Journal of Surface Engineered Materials and Advanced Technology 2012年第2期2卷 95-99页

作者： Hiroshi shioyama National Institute of Advanced Industrial Science and Technology (AIST) Osaka Japan.

Behaviour of excited Ru(bpy)2+3 bound to the surface of water-soluble single-walled carbon nanotubes on addition of other cations have been investigated by measuring Ru(bpy) luminescence. In contrast to what was observed with a solution containing rod-like aggregation particles of Nafion, we found that Ru(bpy)2+3 has a stronger attraction than that of other cations to the sulfonic groups on the carbon nanotubes. Such a difference is attributed to the unique micro-environmental characteristics of the molecular assemblies.

关键词： Nanostructures Single-Walled Carbon Nanotube Ru(bpy)2+3 Luminescence Quenching

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pneumatosis cystoides intestinalis following alpha-glucosidase inhibitor treatment:A case report and review of the literature

引用

World Journal of Gastroenterology 2008年第39期14卷 6087-6092页

作者： Tatsuhiro Tsujimoto Erika shioyama Kei Moriya Hideto Kawaratani Yasuyo Shirai Masahisa Toyohara Akira Mitoro Jun-ichi Yamao Hisao Fujii Hiroshi Fukui Third Department of Internal Medicine Nara Medical UniversityKashiharaNara 634-8522Japan Department of Endoscopy and Ultrasound Nara Medical UniversityKashiharaNara 634-8522Japan

A 69-year-old man was diagnosed as having myasthenia gravis (MG) in September 2004,and treated with thymectomy and prednisolone. He was then diagnosed as having steroid-induced diabetes mellitus,and received sulfonylurea (SU) therapy in May 2005. An alpha-glucosidase inhibitor (αGI) was added in March 2006,resulting in good glycemic control. He experienced symptoms of abdominal distention,increased flatus,and constipation in October 2007,and was admitted into our hospital in late November with hematochezia. Plain abdominal radiography revealed small linear radiolucent clusters in the wall of the colon. Computed tomography (CT) showed intramural air in the sigmoid colon. Colonoscopy revealed multiple smooth surfaced hemispherical protrusions in the sigmoid colon. The diagnosis of pneumatosis cystoides intestinalis (PCI) was made on the basis of these findings. As the αGI voglibose was suspected as the cause of this patient's PCI,treatment was conservative,ceasing voglibose,with fasting and fluid supplementation. The patient progressed well,and was discharged 2 wk later. Recently,several reports of PCI associated with αGI therapy have been published,predominantly in Japan where αGIs are commonly used. If the use of αGIs becomes more widespread,we can expect more reports of this condition on a global scale. The possibility of PCI should be considered in diabetic patients complaining of gastrointestinal symptoms,and the gastrointestinal tract should be thoroughly investigated in these patients.

关键词： Alpha-glucosidase inhibitor Colonoscopy Diabetes mellitus Pneumatosis cystoides intestinalis Voglibose

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Efficacy and HCC development after DAA therapy for patients with chronic hepatitis C:a single center retrospective cohort study

引用

Hepatoma Research 2017年第10期3卷 215-220页

作者： Akitoshi Douhara Hiroyuki Ogawa Satoshi Nakatani Takahiro Ozutsumi Erika shioyama Masaaki Yoshikawa Shigehiko Ueda Internal Medicine Kokuho Central Hospital 404-1MiyakoTawaramoto-choShiki-gunNara Prefecture 636-0302Japan

Aim: The development of hepatocellular carcinoma (HCC) is reduced after interferon based treatment in patients with chronic hepatitis C (CHC). A new therapy using direct-acting antiviral agents (DAA) has been widely applied since 2014 for CHC. The purpose of this study is to investigate the efficacy, safety and development of HCC after DAA treatment. Methods: The authors enrolled 33 consecutive patients who were treated with DAA for CHC at the hospital between January 2015 and March 2016. The laboratory data were collected at the start and 24 weeks after DAA therapy. Results: The authors analyzed 33 patients (18 male, 15 female, mean age of 68-year-old). The hepatic C virus genotypes were type 1 (27 patients) and type 2 (6 patients). The number of patients treated with sofosbuvir (SOF) +ledipasvir, daclatasvir + asunaprevir and SOF + ribavirin was 14, 13 and 6, respectively. The sustained virological response (SVR24) rate was 100%. Aspartate aminotransferase, alanine aminotransferase and FIB4-index were significantly decreased after SVR24. Adverse effects were observed in 9 patients (anemia, 5;liver function test disorder, 2;sarcoidosis, 1;pruritus, 1). With regard to HCC development, one elderly patient (3.0%) had multiple HCC recurrence after SVR24. Conclusion: DAA therapy achieved a high SVR24 rate with a good serological response. However, one patient had multiple HCC recurrence. These findings indicate that careful follow-up may be essential after DAA therapy.

关键词： Chronic hepatitis C direct-acting antiviral therapy development of hepatocellular carcinoma sarcoidosis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

明清时期西洋人“官话”描述演变史

引用

国际汉学 2021年第2期 145-154,205页

作者： [日]盐山正纯日本爱知大学

近代中国有一种被称作“官话”的语言。本文以近代西洋人所编写的英华·华英辞典以及相关资料为核心资料和考察范围,初步考察了近代西洋人对“官话”的认识及描述演变过程。西洋人在英华·华英辞典言及“官话”概念时,他们的看法基本上... 详细信息

近代中国有一种被称作“官话”的语言。本文以近代西洋人所编写的英华·华英辞典以及相关资料为核心资料和考察范围,初步考察了近代西洋人对“官话”的认识及描述演变过程。西洋人在英华·华英辞典言及“官话”概念时,他们的看法基本上极为稳定,并指出了南北之间的差异及其在诸多方言中的地位。到了19世纪末,西洋人明确提出“官话”就是中国的通用语,具有在政治上“南低北高”、在使用人口上“南高北低”的特征。进入20世纪之后,在西洋人的眼中,“官话”已经是中国的标准口头语,他们对南北之间或者地域之间的差异不再给予任何表述。

关键词：官话近代汉语西洋人英华·华英辞典

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

900～2800K多晶石墨电阻率与温度的关系

引用

炭素技术 1991年第4期10卷 18-20页

作者： Masakazu Adachi Hiroshi shioyama Masaki Narisawa Shigeru Ikeda kuniaki Tatsumi Isao Souma Hideo Isozaki kazunori Egawa Hirofumi Kyutoku Takesi Tanamura 刘培桐

1.前言石墨,在惰性气氛下有3300K以上的耐热性,加之它在导电、耐粒子等方面也显示优异的特性,因此作为超高温炉的发热体、宇航材料、原子反应堆用材料等被广泛利用。然而,测定1800K以上的物性,在设备和技术方面是困难的。目前超高温用... 详细信息

1.前言石墨,在惰性气氛下有3300K以上的耐热性,加之它在导电、耐粒子等方面也显示优异的特性,因此作为超高温炉的发热体、宇航材料、原子反应堆用材料等被广泛利用。然而,测定1800K以上的物性,在设备和技术方面是困难的。目前超高温用石墨材料的设计是采用从低温区域得到的石墨数据外推值,再参考经验积累的推断值进行的。因此,开发能够高精度测量炭,石墨材料的电气、机械、高温特性的设备,进而确立可靠性高的评价技术就显得很迫切。有关3300K温度范围内的电导率,虽然美国,苏联已有报告发表,但测试设备和测试条件没有详细说明,并且测试的试样也只局限于特定的石墨种类。

关键词：石墨电导率温度

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

早期舌鳞癌的近距离放疗：25年治疗效果

引用

中国口腔颌面外科杂志 2008年第1期6卷 27-27页

作者： Urashima Y Nakamura K shioyama Y

近距离放疗是早期舌鳞癌的可接受的治疗方法．该文旨在分析近距离放疗对舌鳞癌的治疗效果。对1978～2004年间409例接受近距离放疗的处于T1／2N0M0期的舌癌患者进行回顾性研究。

关键词：近距离放疗早期舌鳞癌治疗效果治疗方法癌患者

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

肝细胞癌单纯动脉化疗与动脉化疗栓塞的比较:一项随机Ⅲ期临床试验

引用

消化肿瘤杂志(电子版) 2010年第1期 24-24页

作者： Okusaka T Kasugai H shioyama Y 张信华

背景和目的许多肝细胞癌(hepatocellular carcinoma,HCC)患者在诊断时已不符合局部治疗的指征,部分在接受局部治疗后复发,也不适合再次局部治疗。经导管肝动脉化疗栓塞(transcatheter arterial chemoembolization,TACE)是经动脉灌注化疗... 详细信息

背景和目的许多肝细胞癌(hepatocellular carcinoma,HCC)患者在诊断时已不符合局部治疗的指征,部分在接受局部治疗后复发,也不适合再次局部治疗。经导管肝动脉化疗栓塞(transcatheter arterial chemoembolization,TACE)是经动脉灌注化疗(transarterial infusion chemotherapy

关键词：肝细胞癌 TAI 患者 TACE HCC

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：