放射性核

Through analysis the average CR of cortex and that of caudate nucleus and lentiform have correlation with MMSE scores of HD.

与磁共振成像比较，分析病人的PET影像特点；测量了病人的平均皮层、豆状核和丘脑的间接放射性计数，与病人的神经心理测量得分、统一的HD运动评分和生活自理能力评分进行比较分析。

Objective Traditional MIRD method for dose assessment in nuclear medicine assumes that radionuclide is homogeneously distributed in organs, and the dose to cells and cell nucleus is presented by mean dose to the organ.

目的核医学中传统的MIRD剂量估算方法是假设放射性药物在器官内均匀分布，用器官的平均剂量描述每个细胞及细胞核的剂量。

copper pyruvaldehyde bis（n -methylthiosemicarbazone） complex, or cu-ptsm, belonging to a class of neutral, lipophilic complexes ,is a positron emission tomography radiopharmaceutical that can be used to evaluate blood flow in the heart, brain, and tumors without following any side effect .cu-ptsm has been demonstrated the ability of rapid diffusion into cells.also because it can be synthesized,it is a potential tracer for pet imaging.

作者单位：610041 四川成都，四川大学华西医院核医学科 cu-ptsm是一种中性亲脂性复合物，用于pet显像的放射性药物。由于该制剂很容易扩散到细胞内，因此注射cu-ptsm后可以了解心、脑和肿瘤部位的血流灌注状况，它不伴有副反应的发生，且合成比较容易，所以是一种非常有前途的新型pet显像剂。

Because of the special design of SPET/CT, it may cause motion artifacts, alignment mismatch, patient collision, and wires knotting of other machine.

SPET/CT提供各种核医检查不同的放射性同位素於身体中吸收部位的准确解剖定位。

Methods n-Cetyl-l-thio-β-D-galactoside was synthesized by a series of reaction from galactose and incorporated into Small Unilamellar Vesicles which was prepared by sonication at the ratio for L-α-PC∶Chol∶L-α-PE as 7∶2∶1, with or without 10 mol%Cetyl-gal.

半乳糖经乙酰化、溴化、缩合、亲核取代反应制备半乳糖新糖脂质并与其他脂质制备脂质体，在二氯化锡还原作用下用99mTc标记脂质体，进行动物体内靶肝实验，用γ计数器检测各脏器放射性，计算摄取率。

The group of mixture dieted albumin polypeptide with 3H-TdR was compared with the groupdieted only 3H-TdR in mice.

应用同位素示踪法对小鼠小肠、肝及胸腺等组织的3H-胸腺嘧啶核苷(3H-TdR)放射性值进行检测，比较了白蛋白多肽和3H-TdR混合物进食组小鼠与仅进食3H-TdR组小鼠间的区别。

It shows that we should energetically promote the interpenetrating and intercross between nuclear technology and environment science to improve the level of this cross discipline

目前核技术正在环境保护中得到广泛的应用。如：烟道气净化、流体和固体废物的辐照处理、放射性示踪剂研究、核分析技术在环境监测和研究中的应用等。

The conception,main feature,foundation stone and research area of molecular nuclear medicinemolecular recognition as rationale, radioisotope labeling as tracer, we can explore the vital phenomena and disease take place from molecular level and give ,meanwhiles, giving a correctly diagnose and therapy of disease.

分子核医学的概念（以分子识别作为理论基础，利用放射性核素标记的示踪剂，从分子水平去认识生命现象和疾病发生、发展的规律，从而诊断与治疗疾病的一门综合性的边缘性学科）、主要特点、理论的基石与研究领域

Radionuclide imaging: In graft side, there were obvious uptakes of the ^99mTc-MDP and revascularization; In control side, there was no process of bone regeneration and bone metabolism.

放射性核素显像：实验侧有较明显的核浓聚和再生血管化现象，对照侧无骨重建，故无骨代谢变化。

Like fission-track dating, alpha-recoil track dating is based on the accumulation of unclear particles which are re-leased by natural radioectivity and produce etchable tracks in solids.

中文摘要：与裂变迹径定年类似，α反冲径迹定年（Alpha-Recoil Track）也是基于天然放射性元素所释放核粒子在固体中产生可蚀刻径迹的积累。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。