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41.
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43.
对定坤丹(蜜丸)进行了显微鉴定研究,将29种组成药物全部检出,对各组成药物的显微鉴别特征作了简明描述,并附显微特征图。 相似文献
44.
140 patients with brain tumor were treated by CT-guided stereotactic injections of radionuclides, such as Aurum-198 (198 Au), Phosphorus-32 (32 P) and Yttrium-90 (90Y). Of these patients aged from 3 to 67 years (average 37), 64 were male and 76 female. Astrocytoma was found in 75 patients, craniopharyngioma in 46, metastatic carcinoma in 7, meningioma in 5, germinoma in 4 and pituitary adenoma in 3. The tumors were located in the deep part or functionally critical area of the brain. After 267 times of injection of colloidal isotopes, no major adverse effects or complications occurred. Follow-up for 6 to 48 months showed improvement in symptoms in 104 (74.3%) patients and CT scanning showed the diminished tumors.
相似文献
45.
作者对自制新荧光剂EPQS进行了性能测试。结果:量子产率为0.21;最大激发波长和荧光波长分别为375nm和484nm,stokes位移109nm;检测生物化合物常用的缓冲溶液对荧光峰位无影响,对荧光强度影响很小;温度的影响也小(18~43℃,FRI61.5~58.1),PH的影响也不大。说明EPQS不仅荧光参数好,而且稳定性也好。适合在较广泛的环境条件下使用。 相似文献
46.
Dongmin Kang 《Taehan Sohwagi Hakhoe chi》2007,49(5):287-293
Development of in vivo animal imaging instrumentations and methods contributes to the early diagnosis of cancer. Of variable imaging modalities, in vivo optical imaging such as bioluminescence and fluorescence is one of the best methods to measure molecular change of cancer cells. High sensitivity and relatively low cost of optical method gives benefits to apply for translational research in the field of cancer. Nano-probes to label and detect early cancer cells have been developed by nano-chemists and molecular imaging researchers. Quantum dots made from fluorescent semi-conductors show good advantages in term of imaging probes; high quantum yields, large molar extinction coefficients, size-dependent tunable emission and high photostability. To detect a gastrointestinal (GI) cancer, newly developed endoscopes have been used. Among them, near infrared fluorescence endoscope and confocal endomicroscope are good candidates for clinical application. In animal studies, successful results to detect cancer in gastrointestinal tract have been obtained. Prospect of nanoparticles as optical imaging moiety is promising to detect GI cancers if their toxicity is minimized. Future fluorescence confocal endoscope with safe cancer targeting nanoparticles will be useful for the detection and treatment of GI cancers. 相似文献
47.
目的:探讨垂体脓肿的临床特征和治疗。方法:回顾性分析14例垂体脓肿患者的临床表现、影像学特征、诊断和治疗,并结合文献进行分析。结果:14例患者中头痛13例,垂体功能低下6例,视力视野影响6例,多饮多尿3例,发热3例。MRI增强病灶均呈环状强化。11例经蝶手术治疗,3例经开颅手术。术后随访头痛缓解者10例,视力、视野改善者4例,尿崩者2例恢复正常,垂体功能低下者中4例恢复正常,3例开颅手术者中2例复发,再经蝶手术治愈。结论:应用常规CT和MR术前诊断垂体脓肿困难,对鞍区囊性病变应考虑到垂体脓肿的可能。及早手术、正确选择手术入路、围手术期合理应用抗生素和适当的对症治疗是治疗垂体脓肿的关键。 相似文献
48.
Suk Hee Heo Yong Yeon Jeong Sang Soo Shin Tae Woong Chung Heoung Keun Kang 《Korean journal of radiology》2007,8(2):180-183
We report an uncommon case of solitary, small hepatic angiosarcoma that was initially considered as a hemangioma. We present the imaging findings, with an emphasis on the initial and follow-up CT and MR findings, as well as report on the more suggestive findings of angiosarcoma than those of a hemangioma. 相似文献
49.
Melissa Kang Diana Bernard Michael Booth Susan Quine Garth Alperstein Tim Usherwood David Bennett 《The British journal of general practice》2003,53(497):947-952
BACKGROUND: To adequately address the complex health needs of young people, their access to services, and the quality of services received, must be improved. AIMS: To explore the barriers to service provision for young people and to identify the training needs of primary healthcare service providers in New South Wales (NSW), Australia. DESIGN OF STUDY: A cross-sectional, qualitative study of the perspectives of a range of health service providers. SETTING: A range of primary healthcare organisations across NSW. METHODS: Samples of general practitioners (GPs), youth health workers, youth health coordinators, and community health centre staff were drawn from urban and rural clusters across NSW. Focus groups and interviews were used to identify barriers to service provision and the training needs of service providers. Data were tape recorded, transcribed, and analysed. RESULTS: Barriers to service provision among GPs and community health centre staff included inadequate time, flexibility, skills, and confidence in working with young people, and poor linkages with other relevant services. Training needs included better knowledge of and skills in adolescent health requirements, working with adolescents, and working with other services. Barriers to service provision for youth health workers and coordinators included lack of financial resources and infrastructure. There were few linkages between groups of service providers. CONCLUSION: Models of service provision that allow stronger linkages between service providers, sufficient time for consultation with young people, adequate training and support of health professionals, and flexibility of service provision, including outreach, should be explored and evaluated. 相似文献
50.
目的:探讨蛋白激酶C(PKC)与神经元凋亡的可能机制,方法:采用大鼠全脑缺血模型,观察脑缺血/再灌流后PKC活性,FOS表达及神经元凋亡的变化。结果:脑缺血/再灌流可以导致PKC的移位激活伴FOS表达及神经元凋亡的增加;用蛋白激酶C抑制剂灯盏花可以阻止上述变化。结论:蛋白激酶C的激活可能通过促进FOS表达参与了脑缺血/再灌流诱导的神经元凋亡。 相似文献