Two aspects were assessed by using Dose volume histogram : the uniformity and conformity of dose distribution in Tar - get Volume and dose delivered to Organ at Risk ( ORA ) .

通过剂量体积直方图（DVH图）和各层面等剂量线分布评估靶区 剂量均匀性、适形性以及危及器官 受 量。

When treating prostate cancer with three-dimensional conformal radiation therapy the impact of bladder filling status on the volume and integral dose distribution of the target and critical organs should be kept in mind

膀胱充盈状态对前列腺癌三维适形 放疗靶 区和重要器官的影响

Relationship Comparative Study Between Prescription Volume and Target Volume in Gamma Knife Dose Planning

伽玛刀 剂量计划系统照射容积和靶 区 容积的相关性比较

These technology makes the tumors in the plan target volume ( PTV ) and shape more close to the clinical target volume ( CTV ) dose distribution on target area conformal better adjust .

这些技术使得计划中的肿瘤靶区的容积和形状（PTV）更加贴近临床靶 区 容积（CTV），靶区 剂量与分布适形性得到更好的调整。

Acute radiation pneumonitis will increase obviously when the ipsilateral lung volume of dose exceeding 2 Gy is more than 400 cc .

单次 剂量超过2Gy的同侧受 照肺 体积≥400cc时，急性放射性肺炎明显加重。

Compare the radiation dose of target volume and normal organs 、 dose distribution and conformal index in dose-volume histogram ( DVH ) .

在剂量体积直方图（DVH）上分别对四组计划比较靶 区和正常组织器官照射剂量、靶区内 剂量分布均匀性和适行指数。

The fat index and lipocyte volume level in high and low dose group reduced significantly ( P < 0.01 );

高、低 剂量组的脂肪指数和脂肪细胞 体积都极显著减小（P＜0.01）；

The effects of various iodine-labeling conditions such as the dose and size of activating beads pH value temperature labeling time periods the volume and the dose of protein on labeling rate were tested .

考察了各种标记条件：活化珠 用量及粒径，pH值，温度，标记时间， 体积及蛋白质对标记率的影响。

Recorded volume CT dose index ( CTDIvol ) and dose length product ( DLP ) of every scanning . Every dose was repeated 3 times and average value was calculated . 2 .

记录每次扫描得到的 容积CT 剂量指数（CTDIvol）及剂量长度乘积（DLP），每种剂量的获得均扫描3次，取平均值。

Concurrently volume dose of 55 ~ 60 Gy sensitive radiotherapy to whole brain was performed 5 times a week with 2 Gy each time .

同时行全脑增敏放疗， 2Gy/次，5次/周， 总量55～60Gy。

Results The urine volume reduced significantly and urine osmolality increased after a single dose of minirin ( 0.1mg ) and this action lasted 4 ~ 20h .

结果单 次 口服弥凝0.1mg后，尿 量迅速下降为服药前的1/10，尿渗透压上升为服药前10倍。此作用维持4～20h。

The research parameters include the high dose coverage for target volume Dose Volume Histogram and DVH parameters and dose homogeneity index .

比较指标包括等剂量曲线对靶 区的包容情况、 剂量体积直方图及参数、剂量均一性指数等。

Fully three dimensional cone beam CT is the evolution of the original CT on the three dimensional space which acquires volume projection data by using two dimensional detectors and reconstructs isotropic low dose volume images by using cone beam reconstruction algorithms .

全三维锥束CT是普通CT在三维空间的扩展，采用二维 X 射线检测器采集 容积投影数据并通过锥束重建算法对各向同性的 三维体积数据进行重建。

The same volume of saline and same dose of amifostine was given to group C and D.

C组给予等 体积生理 盐水；

The volume of > 20 Gy dose of left lung accepted was 18.6 % 17.2 % and 32.3 % in conformal plan conventional four-field plan and conventional two-field plan respectively ; the right lung received 20.5 % 19.9 % and 35.5 % .

三维适形计划、常规四野计划、常规二野计划的左肺受量＞ 20Gy 体积分别为18.6%、17.2%、32.3%，右肺受量＞20Gy 体积分别为20.5%、19.9%、35.5%。

The results show that the volume fraction of hydrogen is increased with the increase of dose but has little relationship with the concentration of N N-diethyl hydroxylamine .

研究结果表明：氢气的 体积分数随着 吸收 剂量的增加而增加，而与N，N二乙基羟胺浓度的关系不大；

Results : With CR + 3DCRT the volume of planning tumor target ( PTV ) included over 95 % prescription dose and the dose of95 % volume of PTV obviously increased but the 5 % PTV in the maximum dose region dropped obviously .

结果：在CR＋3DCRT中，95%处方 剂量以上的计划靶区（PTV） 体积及95%的PTV所受的剂量较CR明显提高，而在高剂量区中5%的容积所受的 剂量明显下降。

Conclusion Featured with volume scanning fast scan speed and short exposure time 320-row dynamic volume CT results in lower radiation dose .

结论320排CT的 容积式扫描速度快、曝光时间短，能有效减少辐射 剂量；

For AVMs of followed-up 1.5 years the complete obliteration rate was more than 44.6 % . The volume of AVMs is smaller or the peripheral dose is larger the obliteration rate is higher .

对脑动静脉畸形，随防一年半以上，完全闭塞率可达44.6%， 体积越小，周边 照射 剂量越大，闭塞率越高。

Local control rate of nasopharyngeal cancer was positively correlated with the target volume dose .

鼻咽癌的局部控制率与靶 体积 的 照射 剂量呈正相关。

CONCLUSIONS : Compared with FB conditions ABC in precise radiotherapy of peripheral NSCLC can decrease radiation volume and dose to the normal tissues as well as the probability of lung and spinal cord damages induced by radiation .

结论：相对于FB常规放疗计划，在NSCLC精确放疗中使用ABC可以有效地减少周围型NSCLC正常组织的受照 体积 和 剂量，减少肺和脊髓放射性损伤的发生率。

Results The results of treatment plan showed that the mean dose of covering gross tumor volume ( GTV )( D95 ) in the nasopharynx was 70.48 Gy and the mean volume of GTV1 ( V95 ) receiving the 95 % dose was 98.46 % .

结果治疗计划结果显示，覆盖鼻咽 GTV1D95的平均剂量为70.48Gy，GTV1V95的平均 体积为98.46%；

Ionization chambers with various valid volume are used to measure the absorbed dose output of X-Knife the results are compared and analyzed . The suitable ionization chamber for the absorbed dose measurement in X-Knife is provided .

对X刀的输出 剂量进行测量时，采用不同有效 体积的电离室，对测量结果进行了比较、分析，提出了适合X刀的输出剂量测量的电离室。

Analysis of 3D dose distributions and dose volume histograms ( DVH ) was used to evaluate the dose and volume in tumor parotids and spinal cord in the patients .

对患者的肿瘤、腮腺和脊髓作三维剂量分布和剂量& 容积 DVH直方图分析。

Method : With integrated Logistic formula to establish mathematical model the relationship between volume and Logistic probability in 15 Gy and the relationship between dose and volumn in 3 % Logistic probability were analysed .

方法：应用Logistic综合方程分析边缘 剂量15Gy的 容积风险概率关系和风险概率为3%的 剂量容积关系；

Conclusion : The Gamma knife is a safe . effective and microinvasive treatment option for cerebral AVM . The therapeutic effects are related to the AVM location volume and radiation dose treated .

结论：γ刀是治疗脑AVM安全、有效、低创的新手段，其治疗效果与AVM的部位、 体积、照射 剂量密切相关。

Conclusion 3DCRT can improve the radiation does the clinical which conform to treatment volume ( CTV ) . The dose of normal tissue can be reduced by 30 % ~ 50 % that has been irradiated in high dose . So it 's valuable in clinical treatment .

结论3DCRT能提高放射 剂量与靶 体积适形的能力，可使接受高剂量照射的正常脑组织减少30%~50%，值得临床推广应用。

The Reference Dose and Volume of High Dose Rate ~ ( 60 ) Co Intracavitary Therapy of Uterine Cervical Cancer

高 剂量率~（60）Co腔内后装治疗宫颈癌的参考 体积和参考点剂量