Because heavy ion has the characters of high-LET value and sharp Bragg peak for dose distribution.
因为重离子具有高传能线密度（LET）及剂量分布呈尖布喇格峰的特点。
Analysis of bone relative dose distribution may help to reveal the relationship of the dose response.
结果提示对骨的相对剂量分布的分析有助于进一步阐明剂量-响应关系。
To investigate dose distribution in recurrent rectal cancer patients treated with CT-guided 125i seed implantation.
探讨复发性直肠癌ct引导125I粒子植入的剂量分布。
The exposure dose distribution and line width control for the laser direct writing system are analyzed. Some experiments are also carried out.
对激光直写光刻的曝光量分布和线宽控制进行了相关理论分析和实验。
Purpose: Simulating calculation the dose distribution of the total body irradiation (TBI) with three dimension treatment planning system (3d-tps).
目的：采用三维治疗计划系统(3d - TPS)模拟计算全身照射(TBI)的剂量分布。
Conclusion IMRT can improve CTV dose distribution and reduce the cardiac dose and volume for the left breast cancer after breast-conserving surgery.
结论左侧乳腺癌保乳术后，调强放疗能改善靶区剂量分布、减少心脏受照剂量和体积。
The results show that the tumor control probability responding to the same total dose will decrease if the dose distribution homogeneity gets worse.
结果表明：在相同的总剂量照射下，剂量分布均匀度越差肿瘤控制率越低。
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。
Objective To estimate dose distribution in normal vessels delivered by radioactive solution in the catheter for intracoronary intra-balloon brachytherapy.
目的计算放射性球囊治疗冠状动脉再狭窄时导管内核素对正常血管的剂量分布。
Three beam scheme is the optimal choice of conformal radiotherapy plan for esophageal carcinoma as concerning the dose distribution to lung and spinal cord.
综合考虑对脊髓和肺的影响，三野计划为食管癌适形放疗的较优方案。
One of the major disadvantages of MRI is its image distortion, which affects the accuracy of the localization of SRT and the veracity of the dose distribution.
对MRI而言，由于存在着影像扭曲的问题，因此影响了SRT定位的精确性，并进一步影响了剂量分布的准确性。
RBM (Regular Beam Model) dose engine is a kind of analytical method based on the measured database, which can calculate the dose distribution of the 3-D water box.
是一种基于测量数据库的解析剂量计算方法，可以用来计算三维纯水箱中的剂量分布信息；
The results showed that the dose distribution in the irradiation field was uniform. The demands of scientific research and radiation processing were met satisfactorily.
结果表明，辐射场的剂量分布比较均匀，可以满足科研和辐照加工的需要。
Objective To investigate the relation of pelvic threedimensional conformal radiotherapy (3DCRT) target with rectal dose distribution and irradiation volume in cervical cancer.
目的探讨宫颈癌盆腔适形放疗时靶区及直肠剂量分布与受照射体积的关系。
Results: Satisfactory dose distribution was achieved within the whole brain, spinal cord and at the portal junction, without any "hot" or "cold" spots and fulfilled the QA criteria.
结果：根据测量全脊髓内及脊髓与全脑衔接处以及全脑内剂量分布满意，无冷点或热点，符合QA。
Objective To study the dose distribution of different bolus after different energy electron beam irradiation to different chest wall radiotherapy for the patients with breast cancer.
目的：对乳腺癌术后胸壁放射治疗时不同能量电子线照射不同厚度组织等效膜产生的剂量进行测量及分析。
Conclusions: the beam Angle and the number of beams have influence upon dose distribution, the dose distribution would be improved for large volume target with the increment of beam number.
结论：照射野方向和照射野的数目对剂量分布有影响，增加照射野的数目可以改善体积较大的病灶的剂量分布。
This method can obtain the real 3-d dose distribution in radiotherapy because of the use of human real image data and the accuracy of Monte Carlo method in computing the particle transportation.
由于采用人体的真实图像数据，以及蒙特卡罗方法计算粒子输运时的准确性，该方法能够得到真实的三维剂量分布。
Dose distribution in water is calculated for normal incidence of proton beams.
计算了质子束垂直入射于水中的剂量分布。
Dose distribution in water is calculated for normal incidence of proton beams.
计算了质子束垂直入射于水中的剂量分布。
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