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剂量-体积直方图
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  dose-volume histogram
     On the dose-volume histogram of the calculation volume, D10 (the highest dose of the 10% volume) were 2.14 Gy and 2.00 Gy with a difference of 7%;
     计算区域的剂量-体积直方图显示:D10(10%体积所包括的最高剂量)分别为2.14Gy和2.00Gy,相差7%;
短句来源
     Methods:By using the render-plan three-dimentional therapeitic planning system,the CT scanning results of 127 cases of abdominal tumors were put into the planning system. According to the demand of the doctors in GTV and CTV,the best plan was selected in considering the dose-volume histogram,and generally 5 to 7 beams of non-coplanar radiation ray were choosed.
     方法 :对 12 7例腹部肿瘤患者应用瑞典医科达公司 render- plan三维治疗计划系统 ,将带体架的 CT扫描结果输入计划系统 ,根据医师要求的 GTV和周围正常的敏感器官设计 CTV ,通常选择 (5~ 7)个非共面射束 ,结合剂量 -体积直方图选择最佳方案。
短句来源
     Methods The 3DCRT plan of 50 cases of primary or metastasis hepatic cancer were designed according to the request of the doctors for CTV and the restricted receiving dose of the peripheral normal sensitive organs. The best plan was chosen referring the dose-volume histogram.
     方法对50例肝部原发及转移性肿瘤患者,根据医师要求的CTV和周围正常的敏感器官限制受量设计三维适形放射治疗计划,结合剂量-体积直方图选择最佳方案。
短句来源
     There are two kinds of objective functions in radiotherapy inverse planning: dose distribution-based and Dose-Volume Histogram(DVH)-based functions.
     目前放疗逆向计划中常用的目标函数有两种:基于剂量分布的目标函数和基于剂量-体积直方图(DVH)的目标函数。
短句来源
  “剂量-体积直方图”译为未确定词的双语例句
     Radiation pneumonitis (RP) is one of the major acute and dose-limiting toxicity in patients with locally advanced non-small-cell lung cancer (NSCLC) treated with concurrent chemoradiotherapy, but data on the predictive factors for RP in that setting have been scarce and inconsistent.
     病人和方法:回顾分析美国MD安德森癌症中心2000年-2003年同步化疗和三维适形放疗的223例非小细胞肺癌病人的临床和放疗资料,得出这组病人的病人、肿瘤和治疗相关因素。 从放疗剂量-体积直方图中计算出正常肺体积,大体肿瘤体积,平均肺剂量,接受超过一定阈值剂量的相对和绝对的正常肺体积(rVd和aVd)。
短句来源
     Detailed analysis of the dose distribution of the treatment volume and accumulative dosage of the parotid as well as other important organs was presented using dose-volume histograms (DVH).
     使用剂量-体积直方图(DVH)评价3D-CRT方案靶区剂量均匀性,并比较不同方案腮腺累积剂量。
短句来源
     Plan tumor volume (PTV)comprised 1.5~2.0 cm normal lung tissue around gross tumor volume(GTV). Dosage-volume histogram was used to assess three-dimensional radiation therapy plan. It was requested that more than 95% plan tumor volume be included in 80%isodose line.
     螺旋CT扫描定位,利用深圳威达公司“CFMTPS2 0 0 0”三维适形放疗计划系统制作三维适形放疗计划,设4~6个共面或非共面射野,靶区(PTV)包括肿瘤(GTV)外1 .5~2 .0cm范围的肺组织,利用剂量-体积直方图评价放疗计划,要求80 %等剂量线包括95 %以上的PTV ,处方剂量在80 %等剂量线上。
短句来源
     Methods: Three dimensional conformal radiation treatment planning (3DRTP) was used to evaluate the different plans with percentage depth dose (PDD), dose-volume histograms (DVH) and planning organs at risk (OAR) volume.
     方法应用三维放射治疗计划系统(3DRTP),对中晚期胸上段食管癌采用不同的外照射计划,通过百分深度量(PDD)、剂量-体积直方图(DVH)分析剂量分布和危及器官(OAR)受量等指标,评价各自的优缺点。
短句来源
  相似匹配句对
     Rapid Compultation for Dose-Volume Histogram
     剂量体积直方图的快速计算
短句来源
     A Development of the Conventional DVH ——Function Dose-volume Histograms
     剂量体积直方图的扩充——功能剂量体积直方图
短句来源
     An Improvement of Calculating Dose-Volume Histogram in Three-dimensional treatment Planning
     三维治疗计划中剂量体积直方图算法的改进
短句来源
     The analysis of cardiac toxicity after radiotherapy for malignant thymic tumor by dose-volume histogram
     应用剂量体积直方图分析放疗对心脏毒性影响
短句来源
     All plans were evaluated with iso- dose curve and dose-volume histogram.
     利用等剂量曲线以及剂量体积直方图对计划进行评价。
短句来源
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  dose-volume histogram
Influence of Treatment Technique on Dose-Volume Histogram and Normal Tissue Complication Probability for Small Bowel and Bladder
      
The aim of this paper is to examine the usefulness of the receiver operating characteristic (ROC) analysis using dose-volume histogram data to evaluate the conformity degree of a stereotactic treatment plan, as well as to propose a reference isodose.
      
Treatment outcomes and dose-volume histogram analysis of simultaneous integrated boost method for malignant gliomas using intens
      


Dose─volume histogram(DVH) shows the relationship between dose and volume in three dimensional treatment planning, and is a valuable tool in evaluating the treatment plan of stereotatic radiosurgery. Conventional DVH calculation is based on the processing of sampling points in the dose domain. There must be a large number of sampling points and the error is large. The authors introduced a new algorithm based on the processing of sampling points in the volume domain. The sampling points were sorted according...

Dose─volume histogram(DVH) shows the relationship between dose and volume in three dimensional treatment planning, and is a valuable tool in evaluating the treatment plan of stereotatic radiosurgery. Conventional DVH calculation is based on the processing of sampling points in the dose domain. There must be a large number of sampling points and the error is large. The authors introduced a new algorithm based on the processing of sampling points in the volume domain. The sampling points were sorted according to the dose. It is efficient and precise, especially when only a small amount of points are available.

剂量体积直方图(dose-volumehistogram,简称DVH)表示三维治疗计划中剂量与体积之间的关系,是立体定向外科中评价治疗计划好坏的重要手段。传统的DVH算法是基于剂量域对采样点进行处理,采样众多,误差大。本文介绍一种基于体积域对采样点按剂量大小进行处理的算法,精度高,速度快,特别适用于采样点少的情况。

Dose-volume histogram (DVH) shows the relationship between dose and volume in three dimensional treatment planning, and it is a valuable tool in evaluating the treatment plan of stereotactic radiosurgery. But conventional DVH is not suitable in the case when the normal organ function is non-uniformly distributed within the organ. So we propose the use of functional dosevolume histograms (fDVHs). Functional dose-volume histograms are proposed as development of the conventional dose-volume histograms for quantitative...

Dose-volume histogram (DVH) shows the relationship between dose and volume in three dimensional treatment planning, and it is a valuable tool in evaluating the treatment plan of stereotactic radiosurgery. But conventional DVH is not suitable in the case when the normal organ function is non-uniformly distributed within the organ. So we propose the use of functional dosevolume histograms (fDVHs). Functional dose-volume histograms are proposed as development of the conventional dose-volume histograms for quantitative assessment of three-dismensional radiation dose coverage of funtionally heterogeneous normal organs.

剂量体积直方图(dose-volumehistogram,DVH)表示三维治疗计划中剂量与体积之间的关系,是立体定向外科中评价治疗计划好坏的重要手段之一。但是传统的DVH[1]都是未考虑到正常器官功能区域分布不均匀性这一特点,故在利用放射线对病人照射时引起了不必要的损伤。本文介绍的功能剂量体积直方图(functionaldose-volumehistograms,fDVHs)算法,就是为了克服传统DVH的缺点,是对传统DVH的扩充。此种算法既继承了传统DVH的特点,又在它的基础上进行了改进,特别是对正常器官功能区域分布不均匀的三维放射剂量覆盖范围的定量估定起了重要作用。

Objective:The current study was designed to rev iew the clinical practice of intensity modulated radiation therapy(IMRT)in department of radiation oncology,Stanford university medical cente r.Methods:An inverse planning system(Corvus,NOMOS corporation)was used to optimize IMRT treatment plans for 2patients.IMRT using 9coplanar beams was a part of ra dical irradiation,combined with external beam therapy.An X-knife radi osurgery boost was added to the first case with nasopharyngeal carcinoma.IMRT was the single...

Objective:The current study was designed to rev iew the clinical practice of intensity modulated radiation therapy(IMRT)in department of radiation oncology,Stanford university medical cente r.Methods:An inverse planning system(Corvus,NOMOS corporation)was used to optimize IMRT treatment plans for 2patients.IMRT using 9coplanar beams was a part of ra dical irradiation,combined with external beam therapy.An X-knife radi osurgery boost was added to the first case with nasopharyngeal carcinoma.IMRT was the single modality in the treatment of thoracic vertebral metastases in th e second patient.Results:The optimized isodose distribution s in various plans showed the best compromise between the targ et volume dose requirements and the d ose constraints placed upon the sensitive structures.The statistics of the pl an summarized the volume,dose range in the targets and the organs or tissu es concerned.Dose volume histograms o ffered a direct comparison of dose-volume in tumor and sensitiv e structures.Conclusions:IMRT can yield a sufficiently homoge neous desired dose distribution which results in a high degree of sparing of sensitive structures.It can be impl emented to escalate target doses in some cases.

目的:介绍调强适形放射治疗(intensitymodulatedradiationtherapyIMRT)在美国Stanford大学医学中心放疗科的临床应用情况。方法:详细描述制作CorvusIMRT治疗计划、质量控制和质量监测的整个过程;利用该IMRT,联合外照射和X刀根治性治疗T4N0M0鼻咽癌1例,及单纯IMRT治疗胸椎体转移癌1例。结果:从靶区各个剖面可见高剂量剂量曲线按计划设计紧扣靶区,重要器官和敏感组织受到保护,治疗计划统计表显示靶区、重要器官和敏感组织的最高及最低受量和受照射体积,而剂量体积直方图则直观地提示肿瘤组织和周围器官的受量比较。结论:IMRT靶区剂量分布均匀,正常组织及敏感器官受到最大限度的保护,可对某些病种的肿瘤组织施以高剂量放疗。

 
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