搜索结果: 1-15 共查到“医学 gamma”相关记录45条 . 查询时间(0.219 秒)
通过旋转准直器角度模拟准直器角度误差，探讨准直器角度误差对单中心多发脑转移瘤容积旋转调强技术（VMAT）计划Gamma通过率的影响。方法：随机选取21例多发脑转移瘤患者的非共面VMAT计划，以无准直器角度误差放疗计划为模板计划，分别将准直器的角度旋转偏移±0.5°、±1.0°、±1.5°、±2.0°，不进行通量优化，重新计算剂量分布形成模拟计划，利用OmniPro-I’mRT软件比较模板计划与模拟...
二维电离室矩阵中射野边界位置对调强验证Gamma通过率的影响
放射治疗 电离室矩阵 γ通过率 射野边界
2020/6/15
针对（10×10） cm2射野，探讨改变射野边界在矩阵中的位置对测量射野大小及Gamma（γ）通过率的影响。方法：使用MatriXX二维电离室矩阵测量（10×10） cm2射野剂量分布，保持射野大小不变，移动X方向准直器和在Y方向移动治疗床两种方式改变射野边界在矩阵中的位置，用OmniPro I’mRT（1.7)软件分析每次移动0.1 cm时射野边长的改变量，同时用实测剂量分布和XiO（4.40）...
Gamma delta T 细胞及其抗肿瘤研究的进展
γδ T细胞 免疫治疗 肿瘤
2014/6/5
Gamma delta（γδ）T细胞表达Vγ9Vδ2 T细胞受体，占外周血T淋巴细胞的2％～5％左右，主要分布于黏膜相关淋巴组织，是T细胞的亚群之一。其免疫作用介于固有免疫和适应性免疫之间，为主要组织相容性复合体（MHC）非限制性细胞， 具有一定的非特异性杀伤肿瘤细胞的作用，并且具有广泛的抗瘤谱。许多研究证实γδ T细胞参与了机体免疫防御系统的第一道防线，未来以γδ T细胞为基础的细胞免疫疗法，将...
Repeat Whole Blood Donation Correlates Significantly with Reductions in BMI and Lipid Profiles and Increased Gamma Glutamic Transferase (GGT) Activity among Nigerian Blood Donors
Blood Donation Gamma Glutamic Transferase Body Mass Index Lipid Profiles
2013/1/30
Background: The effect of repeated blood donation on some biochemical values of healthy adult male blood donors in Calabar, Nigeria was studied. Methods: One hundred and fifty three (153) healthy repe...
The importance of attenuation correction for coincidence positron tomography on Hybrid PET/SPECT Gamma system
coincidence positron tomography Hybrid PET/SPECT Gamma system
2010/1/6
The importance of attenuation correction for coincidence positron tomography on Hybrid PET/SPECT Gamma system/.
Positron tomography of breast cancer in a community hospital: A case study of advanced disease using a coincidence Gamma camera
Positron tomography breast cancer community hospital coincidence Gamma camera
2010/1/5
Until recently PET scanning has been available only at major universities or teaching hospitals possessing the necessary resources and expertise to operate a research PET facility. Most dedicated PET ...
Determination of Susceptibility of Ornithodorus Tholozani to Gamma-B.H.C.by the use of Microloop
Determination Susceptibility Ornithodorus Tholozani Gamma-B.H.C. Microloop
2009/12/3
Determination of Susceptibility of Ornithodorus Tholozani to Gamma-B.H.C.by the use of Microloop。
Contribution de la Gamma-Arteriographie Carotidienne a L'etude de la Dynamique Circulatoire Cerebrale
Contribution Dynamique Circulatoire Cerebrale Carotidienne
2009/12/3
Carotid gamma angiography completes the advantage of paraclinic investiga - tions in field of neuroradiology.
Since this procedure can easily proceed the regular contrast angiography, it furnishes a...
Assessment of Indoor Gamma Radiation and Related Annual Effective Dose in Zanjan, IRAN
Gamma background radiation Indoor Annual effective dose Geiger- Muller detector RDS-110
2009/11/26
Backgrounds and Objectives: Due to importance of ionizing radiation on human health, many studies have been performed to measure the background gamma radiation all around the world as well as some cit...
Effect of gamma rays on the bone repair process in rats with estrogen deficiency
Estrogens Osteoporosis Ovariectomy Bone and bones Fracture healing
2009/10/16
This study aimed at evaluating the bone repair process in ovariectomized rats submitted to an irradiation procedure. For this purpose, one hundred rats were randomly divided in four experimental group...
目的: 探讨乳凝集素调节肠相关淋巴组织淋巴细胞分泌表达细胞因子的作用. 方法: 应用基因重组技术从MCF-7乳腺癌细胞中提取总RNA, 通过逆转录PCR方法得到目的基因(乳凝集素)片段, 利用酶切, 连接等技术, 将目的基因构建至PET28载体内, 转化入DH5alpha细胞后, 鉴定阳性质粒; 将含有目的基因的阳性质粒转化入表达细胞BL-21, IPTGAMMA诱导表达目的蛋白乳凝集素, 应用特...
目的: 探讨肠道感染对IBS患者结肠黏膜SP, IL-2, IFN-gamma表达的影响. 方法: 77例IBS患者(PI-IBS组26例, 非PI-IBS组51例)及30例对照者, 结肠镜下活检降结肠和直肠黏膜标本, 采用免疫组化检测其肠黏膜SP与IL-2, IFN-gamma的表达情况. 结果: PI-IBS患者结肠黏膜SP的表达高于非PI-IBS患者(t = 2.321, 2.452, 2....
大肠癌IFN-gamma基因+874位点的单核苷酸多态性
干扰素 大肠肿瘤 多态性
2009/8/6
目的: 探讨中国浙江地区汉族人群中IFN-gamma基因+874位点多态性分布, 分析其与大肠癌的相关性. 方法: 应用突变特异性扩增系统(ARMS)-PCR对健康者132例和大肠癌患者92例IFN-gamma基因+874位点多态性进行分析, 并将PCR产物克隆及测序鉴定. 结果: 大肠癌患者IFN-gamma+874位点AA基因型频率为70.6%, 显著高于正常人中的57.6% (P<0.05)...
肝癌组织中脱-gamma-羧基凝血酶原的测定及意义
2009/8/6
目的: 定量分析癌组织和非癌组织脱-gamma-羧基凝血酶原(DCP)的浓度，探讨它们在血清DCP升高的作用及临床意义. 方法: 用电化学发光免疫分析法(ECLIA)定量测定41例肝癌患者血清、癌组织和非癌组织中DCP的含量. 结果:癌组织DCP浓度平均为84 447.7(7.1-2098 623.7)mAU/g, 非癌组织DCP浓度平均为888.1(0-23 299.2)mAU/g. 细胞膜上的...