放射

Results Contrast CT or MRI showed prominent irregular circular or nodular enhancement in 14 of 16 cases (64%),can not distinguished from postopertative changes, radioinjury, tumor residue or recurrence.Among them, 9 cases showed tumor residue or recurrence based on significantly increased FDG uptake, 5 were confirmed by pathologic study. The other 5 cases of cerebral necrosis and 2 cases with postoperative cerebral malacia demonstrated FDG uptake defects.

结果 16例中87.5%(14例)CT和MRI表现不规则环形或结节状明显强化，不能准确作出手术后改变和放射治疗后脑损伤、残存肿瘤或肿瘤复发的诊断；其中9例残存肿瘤或肿瘤复发病灶18F-FDG PET影像表现为葡萄糖代谢明显增高，有5例得到手术病理证实；另5例术后放射治疗后脑损伤患者和2例术后软化灶18F-FDG PET影像均显示局部病变区为放射性分布缺损或明显低下。

Fundamental principle of competitive radioassay and noncompetitive.

竞争性放射分析与非竞争性放射分析的基本原理。

Brain malignant glioma/radiotherapy ; X-ray stereotactic radiosurgery ; noncoplanar arc radiation

脑恶性胶质细胞瘤/放射疗法； X线立体定向放射治疗；非共面弧形照射

And whether is it necessary to redefine the geotectonic pattern in southern China? In 1993, the authors discovered firstly the late Paleozoic radiolarian silicalite in the "Shuangqiaoshan Group", which, as we know, is a block within the ophiolitic mélange. In 1996, the authors discovered again the late Paleozoic fossils in the other rocks of "Shuangqiaoshan Group" and "Zhitang Formation" of Lower Sinian Series in the ophiolitic mélange. At the same time, the authors discovered firstly the early Paleozoic chitinozoa fossils.

因此，再次将&板溪群&是否是前震旦纪的一个变质地层单位、江南古陆是否存在以及华南大地构造格局是否需要重新厘定等问题提了出来。1993年笔者于赣东北蛇绿混杂岩带内的&双桥山群&岩块中，首次发现了含晚古生代的放射虫硅质岩。1996年又在该混杂岩带多处的&双桥山群&岩块和&下震旦统志棠组&中找到了含晚古生代的放射虫硅质岩，还首次在&登山群拔竹坑组&中发现了早古生代的几丁虫化石。

China has participated in such deepsea research programs as IODP, which should accelerate the step of the study of paleoceanography.

随着放射虫在古海洋环境研究中的广泛应用以及研究手段的改进，放射虫现代生态学研究在世界各大洋得到了广泛开展。

Cases 1-5 who presented with spastic paraparesis and other prominent upper motor neurone signs showed high signal on T1-weighted images in the centrum semiovale, corona radiata and posterior limb of the internal capsule which corresponded to the large myelinated fibres of the corticospinal tract Fig.

病例1~5患者表现为下肢痉挛性轻瘫和其他一些明显的上运动神经元症状体征，在T1像上于半卵圆中心、放射冠、内囊后肢处的皮质脊髓束大有髓纤维走行区均可见高信号病灶（图1），在T2、PdWI像上也可见自放射冠延伸至大脑脚的高信号病灶。

Another study demonstrated that women who take alkylglycerols prophylactically starting eight days before the beginning of radiation therapy have lower mortality rates and greater survival than women who just take them during the course of radiation therapy.

另一研究表明，妇女在接受放射治疗8天前定期服用alkylglycerols，比仅仅在放射治疗过程中服用alkylglycerols的妇女存活率大大提高，死亡率显著降低。

The radiational ratio was analysed and it's changing of basing metabolizion's cerebral infarct and normal cerebral with using analysis technology of region of interest,as well as,the radiational ratio of with using same method after acupunctural metabolism.

对38例脑梗死性患者分别行基础状态下的脑灌注显像和神经穴位刺激状态下的脑灌注显像，运用感兴趣区技术测定针刺前后病灶与正常部位脑组织放射量比值及放射量比值的变化。

Objective To determine the scattering and density effects of intrauterine contraceptive ring on pelvic radiotherapeutic dosage distribution.

目的 测量元宫型金属宫腔内节育环对放射治疗引起的密度效应及次级射线引起的散射效应对放射治疗剂量分布的影响。

In this article, the radiosensitization and development of radiotherapeutic technology are reviewed. Recent progress in reducing the radiation-induced hepatic injury is also summarized.

本文主要从肝癌放疗敏感性、放疗技术的发展等方面对PHC的放射治疗作一综述，旨在说明PHC的放射治疗在减少放射性肝损伤等方以取得了可喜的成绩，且仍有较大发展空间。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。