全文获取类型
收费全文 | 2914篇 |
免费 | 221篇 |
国内免费 | 13篇 |
专业分类
耳鼻咽喉 | 46篇 |
儿科学 | 103篇 |
妇产科学 | 60篇 |
基础医学 | 380篇 |
口腔科学 | 96篇 |
临床医学 | 334篇 |
内科学 | 556篇 |
皮肤病学 | 40篇 |
神经病学 | 237篇 |
特种医学 | 86篇 |
外科学 | 521篇 |
综合类 | 48篇 |
现状与发展 | 1篇 |
一般理论 | 1篇 |
预防医学 | 147篇 |
眼科学 | 174篇 |
药学 | 133篇 |
中国医学 | 19篇 |
肿瘤学 | 166篇 |
出版年
2024年 | 5篇 |
2023年 | 20篇 |
2022年 | 75篇 |
2021年 | 127篇 |
2020年 | 88篇 |
2019年 | 115篇 |
2018年 | 116篇 |
2017年 | 76篇 |
2016年 | 101篇 |
2015年 | 113篇 |
2014年 | 191篇 |
2013年 | 182篇 |
2012年 | 267篇 |
2011年 | 258篇 |
2010年 | 134篇 |
2009年 | 117篇 |
2008年 | 152篇 |
2007年 | 172篇 |
2006年 | 144篇 |
2005年 | 149篇 |
2004年 | 116篇 |
2003年 | 116篇 |
2002年 | 79篇 |
2001年 | 27篇 |
2000年 | 18篇 |
1999年 | 23篇 |
1998年 | 11篇 |
1997年 | 8篇 |
1996年 | 10篇 |
1995年 | 10篇 |
1994年 | 8篇 |
1993年 | 3篇 |
1992年 | 8篇 |
1991年 | 14篇 |
1990年 | 15篇 |
1989年 | 18篇 |
1988年 | 6篇 |
1987年 | 13篇 |
1986年 | 4篇 |
1985年 | 7篇 |
1984年 | 8篇 |
1983年 | 6篇 |
1982年 | 2篇 |
1981年 | 3篇 |
1980年 | 6篇 |
1978年 | 1篇 |
1977年 | 1篇 |
1973年 | 1篇 |
1972年 | 2篇 |
1970年 | 2篇 |
排序方式: 共有3148条查询结果,搜索用时 31 毫秒
1.
2.
3.
4.
5.
6.
Babak Kasravi MD Cheryl L. Reid MD Byron J. Allen MD 《Journal of the American Society of Echocardiography》2004,17(12):599-1316
Coronary artery fistula is often considered to be a benign and rare congenital anomaly. It is usually an incidental finding encountered during routine cardiac catheterization. We report a case of a patient presenting with endocarditis involving a large coronary artery fistula connecting an aneurysmal circumflex coronary artery to the coronary sinus. The diagnosis was initially made by echocardiography and confirmed by cardiac catheterization. In addition, we briefly discuss the literature on management of this coronary anomaly. 相似文献
7.
Seth M Brown Babak Sadoughi Hernando Cuellar Ron von Jako Marvin P Fried 《Otolaryngology--head and neck surgery》2007,136(2):268-273
OBJECTIVE: One of the main limitations of image-guided surgery is that navigation relies on the use of a CT scan obtained before surgery and is unable to be updated during the procedure. A software addition has been developed to allow reconstruction of CT-like images from a series of fluoroscopic scans and integrate these into an image-guided system (GE Healthcare Surgical Navigation, Lawrence, MA). We report our initial experience with a series of patients undergoing intraoperative fluoroscopic navigation in sinus surgery. STUDY DESIGN AND SETTINGS: After institutional review board clearance, we prospectively studied 14 consecutive patients undergoing image-guided sinus surgery with the use of intraoperative fluoroscopy. RESULTS: All patients had preoperative and postoperative fluoroscopic images reconstructed into CT-like images. By the conclusion of the study, images were adequate in quality and accurate navigation was achieved. CONCLUSION: Real-time image-guided sinus surgery using fluoroscopy is feasible. Future studies will need to focus on defining the procedures that could benefit, such as tumor resection, to enhance patient safety during these operations. 相似文献
8.
9.
Nir Giladi Babak Boroojerdi Amos D Korczyn David J Burn Carl E Clarke Anthony H V Schapira 《Movement disorders》2007,22(16):2398-2404
Rotigotine is a new, non-ergot dopamine agonist formulated in a transdermal delivery system. The present study was to investigate the efficacy and safety of the rotigotine transdermal patch in the treatment of early Parkinson's disease. Patients (n = 561) were randomized to rotigotine, ropinirole, or placebo. The titration period was up to 13 weeks, and there was a minimum dose-maintenance period of 24 weeks for ropinirole and 33 weeks for rotigotine. The primary endpoint was the proportion of patients with a minimum of 20% decrease in the combined Unified Parkinson's Disease Rating Scale Part II and Part III scores. The responder rate in the rotigotine group was significantly higher than in the placebo group (52% vs. 30%, P < 0.0001). Transdermal rotigotine at doses < or =8 mg/24 h did not show noninferiority to ropinirole at doses < or =24 mg/day. In a post-hoc subgroup analysis, rotigotine < or =8 mg/24 hours had a similar efficacy to ropinirole at doses < or =12 mg/day. The rotigotine transdermal patch was well tolerated. The most common adverse events were application-site reactions, nausea, and somnolence. Application-site reactions were predominantly mild or moderate in intensity. In conclusion, the rotigotine transdermal patch represents an effective and safe option for the treatment of patients with early Parkinson's disease. 相似文献
10.
An unusual retinal manifestation of arteriovenous communications is reported in a case showing a combination of Sturge-Weber and Kippel-Trenaunay syndromes. The arteriovenous communications are thought to be similar to those seen in the limbs in Parkes-Weber syndrome. This retinal finding indicates that the three syndromes are intricately related to each other and may be an incomplete manifestation of a single pathophysiologic entity which may be named neurocutaneous angiomatosis. 相似文献