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ct模拟机
相关语句
  ct-simulator
     Quality Control and Quality Assuring Requirements of CT-simulator
     CT模拟机的质量控制和质量保证检验
短句来源
     Requirement and method for image quality examination and precise localization of CT-simulator in virtual simulation process are reviewed.
     文章主要论述了放射治疗虚拟定位对CT模拟机质量保证工作中影像质量检验和定位精度检验的要求与方法。
短句来源
  “ct模拟机”译为未确定词的双语例句
     METHODS: Clinical data from 94 patients with ESCC, treated with radiotherapy (39 patients) or chemoradiotherapy (55 patients) from Jan. 2001 to Jun. 2003 at Cancer Center of Sun Yat-sen University, were retrospectively reviewed. Of the 94 patients, 18 (19.1%) were at stage Ⅱ, 36 (36.3%) at stage Ⅲ, and 42 (44.6%) at stage Ⅳ.
     方法:总结2001年1月至2003年6月我院确诊并在我科行放射治疗,病理为鳞状细胞癌的食管癌94例,临床分期Ⅱ期(18例,19.1%)、Ⅲ期(36例,36.3%)、Ⅳ期(42例,44.6%),KPS≥70,CT模拟机定位放射治疗,其中单纯放疗39例,同期放化疗55例。
短句来源
     All patients were immobilized in treatment position by breast board of Med-Tec 250 type, and underwent virtual simulation using Marconi CT simulator. The palpable glandular breast tissue was marked with a radio-opaque wire in some patients before CT scanning. The motion of the breast treatment volume was observed on fluoroscopy in different directions under free breathing in 16 patients.
     采用Med-Tec250型乳腺托架摆位固定,在马可尼CT模拟机下行全乳切线野虚拟模拟定位后,通过以下三个方面观察测量影响确定全乳根治性放射治疗靶体积的因素:(1)观察16例患者在常规模拟机透视下全乳治疗体积在不同方向随呼吸运动的移动幅度。
短句来源
     Vacuum bag and body frame were used. CT simulation location and three dimensional treatment plan were used.
     采用真空袋及体部定位架,CT模拟机定位和三维治疗计划。
短句来源
     Some methods validating and evaluating radiotherapy planning, such as the CT simulator and phantom method, have their own advantages and disadvantages.
     对于放疗计划的验证和评估有CT模拟机、仿体等方法,这些方法各有优缺点。
短句来源
     Methods:Cylinder (models) buried in a piece of wax were scanned with Siemens CT simulator by using different scan slice thickness(2mm,3mm,5mm,10mm) with different pitches. (1.0,1.5,2.0). After that the images obtained were contoured with Treatment Planning System.
     方法:在Siemens CT模拟机上以不同层厚(2、3、5及10 mm)相对应的不同螺距(1.0、1.5、2.0)对埋入蜡块中的圆柱体模型进行扫描,在治疗计划系统上对不同层厚对应不同螺距所获图像勾画靶区,利用TPS的测量软件测得模体的体积、前后径、左右径及上下径的数据。
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  相似匹配句对
     Quality Control and Quality Assuring Requirements of CT-simulator
     CT模拟机的质量控制和质量保证检验
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     CT60G.
     CT60G。
短句来源
     The Industrial CT
     工业CT
短句来源
     Study on the Prevention and Treatment of Complications in the Transthoracic Needle Biopsy of Lung under Simulator and Computer Tomography
     模拟机CT导引经皮肺穿并发症的防治
短句来源
     Nuclear Power Plant Training Simulator
     核电站培训模拟机
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Objective To evaluate the short-term therapeutic effect and radiation reaction of stereotactic radiotherapy for early stage non-small cell lung cancer in the elderly patients. Methods Thirty-one patients with stage Ⅰ - Ⅱ non-small cell lung cancer were treated with stereotactic radiotherapy. Patients aged 70-88 years, median age 76; 21 were stage I patients, and 10 stage Ⅱ ; 14 patients had tumor <3 cm and 17 patients had tumor ≥3 cm. Vacuum bag and body frame were used. CT simulation location and three dimensional...

Objective To evaluate the short-term therapeutic effect and radiation reaction of stereotactic radiotherapy for early stage non-small cell lung cancer in the elderly patients. Methods Thirty-one patients with stage Ⅰ - Ⅱ non-small cell lung cancer were treated with stereotactic radiotherapy. Patients aged 70-88 years, median age 76; 21 were stage I patients, and 10 stage Ⅱ ; 14 patients had tumor <3 cm and 17 patients had tumor ≥3 cm. Vacuum bag and body frame were used. CT simulation location and three dimensional treatment plan were used. Tumor <3 cm received arc irradiation, with dose 10-15 Gy/f, totally 3-5 fractions, and tumor≥3 cm received 3-dimensional conformal field, with dose 5-8 Gy/f, totally 5-8 fractions. The treatment plans required that more than 95% PTV should receive more than 95% dose. Results The short-term treatment resulted in complete response (CR) rate of 48% , partial response (PR) rate of 39% , and overall response rate of 87%(CR+PR). CR rate was 71% for tumor<3 cm, and was 29% for tumor ≥3 cm, showing significant difference (P<0. 05). 1- and 2-year survival rate were 83. 9% and 52. 6% respectively. 1-year survival rate for stage Ⅰ and stage Ⅱ were 95. 2% and 60% respectively with the significant difference (P < 0. 05). 2-year survival rate for stage Ⅰ and stage Ⅱ were 54.5% and 50.0% respectively. Acute radiation pneumonitis were mostly RTOG grade 0 , 9 patients had grade 1, and 3 patients had grade 2. Late radiation pulmonary fibrosis were mostly grade 1, 6 patients had grade 2. There were no acute and late radiation pneumonitis above grade 2. Conclusions Stereotactic radiotherapy for elderly early stage non-small cell lung cancer is safe and effective. The short-term therapeutic effect is satisfactory. Long-term treatment result needs further follow-up.

目的 观察立体定向放射治疗对70岁及以上早期非小细胞肺癌患者的近期疗效和放射反应。方法 对31例70岁及以上临床Ⅰ、Ⅱ期非小细胞肺癌患者行立体定向放射治疗,患者年龄70~88岁,中位年龄76岁;Ⅰ期21例,Ⅱ期10例;病灶<3 cm 14例,≥3 cm 17例。采用真空袋及体部定位架,CT模拟机定位和三维治疗计划。<3 cm病灶采用弧形照射,剂量10~15 Gy/次,共3~5次;≥3 cm病灶采用非共面适形野,剂量5~8 Gy/次,共6~12次。计划要求95%以上计划靶区(PTV)体积接受95%以上剂量。结果 近期疗效中完全缓解(CR)率为48%,部分缓解(PR)率为39%,无进展(NR)率为13%,总有效率(CR+PR)为87%。肿瘤直径<3 cm者CR率为71%,而≥3cm者CR率为29%,两者比较差异有显著性(P<0.05)。1、2年生存率分别为83.9%。52.6%。Ⅰ、Ⅱ期1年生存率分别为95%、60%,差异有显著性(P<0.05),2年生存率分别为54.5%、50.0%,两者比较差异无显著性(P>0.05)。放射性肺反应早期0级19例,Ⅰ级9例,Ⅱ级3例;晚期肺反应Ⅰ级25例,Ⅱ级6例...

目的 观察立体定向放射治疗对70岁及以上早期非小细胞肺癌患者的近期疗效和放射反应。方法 对31例70岁及以上临床Ⅰ、Ⅱ期非小细胞肺癌患者行立体定向放射治疗,患者年龄70~88岁,中位年龄76岁;Ⅰ期21例,Ⅱ期10例;病灶<3 cm 14例,≥3 cm 17例。采用真空袋及体部定位架,CT模拟机定位和三维治疗计划。<3 cm病灶采用弧形照射,剂量10~15 Gy/次,共3~5次;≥3 cm病灶采用非共面适形野,剂量5~8 Gy/次,共6~12次。计划要求95%以上计划靶区(PTV)体积接受95%以上剂量。结果 近期疗效中完全缓解(CR)率为48%,部分缓解(PR)率为39%,无进展(NR)率为13%,总有效率(CR+PR)为87%。肿瘤直径<3 cm者CR率为71%,而≥3cm者CR率为29%,两者比较差异有显著性(P<0.05)。1、2年生存率分别为83.9%。52.6%。Ⅰ、Ⅱ期1年生存率分别为95%、60%,差异有显著性(P<0.05),2年生存率分别为54.5%、50.0%,两者比较差异无显著性(P>0.05)。放射性肺反应早期0级19例,Ⅰ级9例,Ⅱ级3例;晚期肺反应Ⅰ级25例,Ⅱ级6例,无Ⅲ级以上早期及晚期放射性肺反应。结论 立体定向放射治疗技术治疗老年人早期非小细胞肺癌是安全的,近期疗效满意,远期疗效有待进一步观察。

Virtual simulation process relates to imgage diagnosis,radiation treatment planning and radiotherapy positioning technique.Requirement and method for image quality examination and precise localization of CT-simulator in virtual simulation process are reviewed.

虚拟模拟定位过程涉及放射诊断影像、放射治疗计划设计和放射治疗定位等技术。文章主要论述了放射治疗虚拟定位对CT模拟机质量保证工作中影像质量检验和定位精度检验的要求与方法。

radiation therapy simulation is the procedur e of designing and validating patient position,beam orientations,and patient t reatment plans without the use of a treatment machine.Before the simulator was invented,people search a approach of using diagnose.X-ray for instead.when th e firstsimulator based X-ray diagnose machine come into been in 1980's,the ques tion of radiation therapy simulation has been basically settled.along With the CT scanner widespread application,CT simulator enter the usage in various...

radiation therapy simulation is the procedur e of designing and validating patient position,beam orientations,and patient t reatment plans without the use of a treatment machine.Before the simulator was invented,people search a approach of using diagnose.X-ray for instead.when th e firstsimulator based X-ray diagnose machine come into been in 1980's,the ques tion of radiation therapy simulation has been basically settled.along With the CT scanner widespread application,CT simulator enter the usage in various way. For the more accurate normal tissue resolution and clear 3D image,it was used p opularly.and the MRI perform high resolution than CT scanner in central nervous system,it is also in the tryout of simulation.this paper not only describe si mulation process using device above,but also introduce a new approach of radiat ion therapy simulation by combining the PET and CT.

放疗模拟是对放疗照射过程的模拟。在放疗模拟机诞生之前 ,人们一直探索用诊断X线机代用。上世纪八十年代以X线诊断机为基础的常规放疗模拟机开始普及使用 ,解决了放疗模拟的基本问题 ,至今随影像数字化还在不断完善。随着CT在放疗计划中的普及使用 ,CT -模拟机也以多种方式进入放疗模拟 ,其肿瘤和正常组织的密度分辨率较常规放疗模拟机有大幅提高 ,并具有三维影像的直观性 ,使之日益推广应用于放疗模拟。因MRI以对中枢神经系统等肿瘤定位优于CT ,目前MRI模拟机也处于放疗模拟试用之中。本文除对以上放疗模拟设备作出综述外 ,还简要介绍了PET与CT结合对肿瘤定位及放疗模拟带来更新的途径。

 
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