全文获取类型
收费全文 | 1074篇 |
免费 | 89篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 3篇 |
儿科学 | 58篇 |
妇产科学 | 8篇 |
基础医学 | 121篇 |
口腔科学 | 29篇 |
临床医学 | 175篇 |
内科学 | 205篇 |
皮肤病学 | 12篇 |
神经病学 | 47篇 |
特种医学 | 253篇 |
外科学 | 99篇 |
综合类 | 21篇 |
预防医学 | 32篇 |
眼科学 | 9篇 |
药学 | 65篇 |
中国医学 | 5篇 |
肿瘤学 | 28篇 |
出版年
2023年 | 8篇 |
2021年 | 9篇 |
2020年 | 6篇 |
2019年 | 7篇 |
2018年 | 22篇 |
2017年 | 12篇 |
2016年 | 20篇 |
2015年 | 21篇 |
2014年 | 27篇 |
2013年 | 29篇 |
2012年 | 18篇 |
2011年 | 24篇 |
2010年 | 36篇 |
2009年 | 65篇 |
2008年 | 30篇 |
2007年 | 15篇 |
2006年 | 21篇 |
2005年 | 18篇 |
2004年 | 12篇 |
2003年 | 21篇 |
2002年 | 18篇 |
2001年 | 19篇 |
2000年 | 16篇 |
1999年 | 15篇 |
1998年 | 59篇 |
1997年 | 52篇 |
1996年 | 65篇 |
1995年 | 49篇 |
1994年 | 43篇 |
1993年 | 47篇 |
1992年 | 20篇 |
1991年 | 9篇 |
1990年 | 16篇 |
1989年 | 39篇 |
1988年 | 31篇 |
1987年 | 32篇 |
1986年 | 39篇 |
1985年 | 28篇 |
1984年 | 22篇 |
1983年 | 15篇 |
1982年 | 22篇 |
1981年 | 15篇 |
1980年 | 8篇 |
1978年 | 5篇 |
1977年 | 12篇 |
1976年 | 14篇 |
1975年 | 17篇 |
1971年 | 3篇 |
1970年 | 4篇 |
1969年 | 4篇 |
排序方式: 共有1170条查询结果,搜索用时 609 毫秒
1.
ME BURGE AM JOSHUA CM McNEIL R HUI MJ BOYER R ABRAHAM 《Asia-Pacific Journal of Clinical Oncology》2005,1(1):47-52
Background: Pemetrexed and cisplatin have recently been shown to significantly improve survival compared with cisplatin alone. However, there are only limited data reflecting teaching hospital experience outside a clinical trial. Pemetrexed has only been available in Australia on a restricted basis since 2002. We reviewed our experience of patients treated on the Australian ‘Special Access Scheme’ at three major thoracic oncology units. Methods: Charts were reviewed for all patients enrolled on the scheme. Data was extracted on age, World Health Organization (WHO) performance status, histology, prior therapy, time from diagnosis to starting pemetrexed, chemotherapy (pemetrexed alone or with a platinum), cycle number, response rate, actuarial progression‐free and overall survival. Doses were cisplatin 75 mg/m2 or carboplatin AUC = 5 and pemetrexed 500 mg/m2 every 21 days. Results: 52 patients (32 male and 20 female) were reviewed. Median age was 58 years and 88% were WHO 0–1. Histology included 54% epithelial, 17% biphasic (epithelial and sarcomatoid) and 21% undefined. The median time from diagnosis to administration of pemetrexed was 145 days. Sixty‐five percent had minimal surgical intervention with video assisted thoracoscopy, pleurodesis and biopsy, while 19% had received prior palliative radiation. Seventy‐one percent were chemotherapy naïve, the remaining 29% having received previous platinum and/or gemcitabine regimens. Twenty‐three percent had pemetrexed alone, 35% in combination with carboplatin and 42% with cisplatin. The median number of cycles was 4 (range 1–13). The response rate was 33%. No toxicity was observed in 20% grade 3–4 toxicity in 10% (majority nausea/vomiting). The median progression‐free and overall survival times from starting pemetrexed were 184 days and 298 days, respectively. Conclusions: Pemetrexed‐based regimens are safe and effective in a community setting in malignant mesothelioma. 相似文献
2.
Biodistribution and pharmacokinetics of the alphavbeta3-selective tracer 18F-galacto-RGD in cancer patients. 总被引:5,自引:0,他引:5
Ambros J Beer Roland Haubner Michael Goebel Stephan Luderschmidt Mary E Spilker Hans-Jürgen Wester Wolfgang A Weber Markus Schwaiger 《Journal of nuclear medicine》2005,46(8):1333-1341
(18)F-Galacto-RGD has been developed for PET of alpha(v)beta(3) integrin expression, a receptor involved in, for example, angiogenesis and metastasis. Our aim was to study the kinetics and biodistribution of (18)F-Galacto-RGD in cancer patients. METHODS: Nineteen patients with metastases of malignant melanoma (n = 7), sarcomas (n = 10), or osseous metastases (n = 2) were examined. After injection of 133-200 MBq (18)F-Galacto-RGD, 3 consecutive emission scans from the pelvis to the thorax or dynamic emission scans of the tumor over 60 min, followed by 1 static emission scan of the body, were acquired. Time-activity curves and standardized uptake values (SUVs) were derived by image region-of-interest analysis with image-based arterial input functions. Compartmental modeling was used to derive the distribution volume for muscle tissue and tumors. RESULTS: (18)F-Galacto-RGD showed rapid blood clearance and primarily renal excretion. SUVs in tumors ranged from 1.2 to 9.0. Tumor-to-blood and tumor-to-muscle ratios increased over time, with peak ratios of 3.1 +/- 2.0 and 7.7 +/- 4.3, respectively, at 72 min. The tumor kinetics were consistent with a 2-tissue compartment model with reversible specific binding. Distribution volume values were, on average, 4 times higher for tumor tissue (1.5 +/- 0.8) than those for muscle tissue (0.4 +/- 0.1). The data suggest that there was only minimal free and bound (specific or nonspecific) tracer in muscle tissue. CONCLUSION: (18)F-Galacto-RGD demonstrates a highly favorable biodistribution in humans with specific receptor binding. Most important, this study shows that (18)F-Galacto-RGD allows visualization of alpha(v)beta(3) expression in tumors with high contrast. Consequently, this tracer offers a new strategy for noninvasive monitoring of molecular processes and may supply helpful information for planning and controlling of therapeutic approaches targeting the alpha(v)beta(3) integrin. 相似文献
3.
4.
5.
6.
7.
8.
9.
10.