全文获取类型
收费全文 | 5792篇 |
免费 | 327篇 |
国内免费 | 61篇 |
专业分类
耳鼻咽喉 | 121篇 |
儿科学 | 91篇 |
妇产科学 | 115篇 |
基础医学 | 1066篇 |
口腔科学 | 88篇 |
临床医学 | 428篇 |
内科学 | 990篇 |
皮肤病学 | 212篇 |
神经病学 | 429篇 |
特种医学 | 474篇 |
外科学 | 753篇 |
综合类 | 31篇 |
一般理论 | 3篇 |
预防医学 | 207篇 |
眼科学 | 112篇 |
药学 | 429篇 |
中国医学 | 45篇 |
肿瘤学 | 586篇 |
出版年
2023年 | 26篇 |
2022年 | 92篇 |
2021年 | 157篇 |
2020年 | 83篇 |
2019年 | 118篇 |
2018年 | 148篇 |
2017年 | 125篇 |
2016年 | 153篇 |
2015年 | 220篇 |
2014年 | 251篇 |
2013年 | 331篇 |
2012年 | 484篇 |
2011年 | 466篇 |
2010年 | 259篇 |
2009年 | 244篇 |
2008年 | 337篇 |
2007年 | 333篇 |
2006年 | 291篇 |
2005年 | 282篇 |
2004年 | 229篇 |
2003年 | 249篇 |
2002年 | 203篇 |
2001年 | 200篇 |
2000年 | 191篇 |
1999年 | 134篇 |
1998年 | 68篇 |
1997年 | 50篇 |
1996年 | 34篇 |
1995年 | 24篇 |
1994年 | 28篇 |
1993年 | 22篇 |
1992年 | 45篇 |
1991年 | 40篇 |
1990年 | 39篇 |
1989年 | 32篇 |
1988年 | 36篇 |
1987年 | 32篇 |
1986年 | 13篇 |
1985年 | 8篇 |
1984年 | 12篇 |
1983年 | 7篇 |
1982年 | 12篇 |
1981年 | 6篇 |
1980年 | 6篇 |
1979年 | 11篇 |
1978年 | 6篇 |
1976年 | 5篇 |
1974年 | 9篇 |
1973年 | 4篇 |
1970年 | 5篇 |
排序方式: 共有6180条查询结果,搜索用时 15 毫秒
81.
Jisun Yoon Eun Jin Eom Jin Tack Kim Dae Hyun Lim Woo Kyung Kim Dae Jin Song Young Yoo Dong In Suh Hey-Sung Baek Meeyong Shin Ji-Won Kwon Gwang Cheon Jang Hyeon-Jong Yang Eun Lee Hwan Soo Kim Ju-Hee Seo Sung-Il Woo Hyung Young Kim Youn Ho Shin Ju Suk Lee Sungsu Jung Minkyu Han Jinho Yu 《Allergy, asthma & immunology research》2021,13(1):42
82.
Shahrouki Puja Barclay Jonathan Khan Sarah Genshaft Scott Abtin Fereidoun McGraw Charles Baek Donny Nickel Barbara Suh Robert 《Cardiovascular and interventional radiology》2021,44(2):325-332
CardioVascular and Interventional Radiology - Purpose Bronchopleural fistula is a rare but serious complication of lung ablation, as it is difficult to treat and is associated with a high mortality... 相似文献
83.
84.
85.
Seungbo Lee Young Han Lee Tae-Sub Chung Eun-Kee Jeong Sungjun Kim Yeon Hwa Yoo In Seong Kim Choon-Sik Yoon Jin-Suck Suh Jung Hyun Park 《Korean journal of radiology》2015,16(6):1303-1312
ObjectiveTo assess the performance of diffusion tensor imaging (DTI) for the diagnosis of cervical spondylotic myelopathy (CSM) in patients with deformed spinal cord but otherwise unremarkable conventional magnetic resonance imaging (MRI) findings.ResultsThe MD, LD, and RD cut-off values were 1.079 × 10-3, 1.719 × 10-3, and 0.749 × 10-3 mm2/sec, respectively, and that of FA was 0.475. Sensitivity, specificity, positive predictive value and negative predictive value were: 100 (4/4), 44.8 (13/29), 20 (4/20), and 100 (13/13) for MD; 100 (4/4), 27.6 (8/29), 16 (4/25), and 100 (8/8) for FA; 100 (4/4), 58.6 (17/29), 25 (4/16), and 100 (17/17) for MD∩FA; 100 (4/4), 68.9 (20/29), 30.8 (4/13), and 100 (20/20) for LD∩FA; and 75 (3/4), 68.9 (20/29), 25 (3/12), and 95.2 (20/21) for RD∩FA in percentage value. Diagnostic performance comparisons revealed significant differences only in specificity between FA and MD∩FA (p = 0.003), FA and LD∩FA (p < 0.001), FA and RD∩FA (p < 0.001), MD and LD∩FA (p = 0.024) and MD and RD∩FA (p = 0.024).ConclusionFractional anisotropy combined with MD, RD, or LD is expected to be more useful than FA and MD for diagnosing CSM in patients who show deformed spinal cords without signal changes on MRI. 相似文献
86.
Young Joo Suh Young Jin Kim Yoo Jin Hong Hye-Jeong Lee Jin Hur Dong Jin Im Yun Jung Kim Byoung Wook Choi 《Korean journal of radiology》2015,16(5):1012-1023
Objective
The aims of this study were to compare opening and closing angles of normally functioning mechanical aortic valves measured on dual-source computed tomography (CT) with the manufacturers'' values and to compare CT-measured opening angles according to valve function.Materials and Methods
A total of 140 patients with 10 different types of mechanical aortic valves, who underwent dual-source cardiac CT, were included. Opening and closing angles were measured on CT images. Agreement between angles in normally functioning valves and the manufacturer values was assessed using the interclass coefficient and the Bland-Altman method. CT-measured opening angles were compared between normal functioning valves and suspected dysfunctioning valves.Results
The CT-measured opening angles of normally functioning valves and manufacturers'' values showed excellent agreement for seven valve types (intraclass coefficient [ICC], 0.977; 95% confidence interval [CI], 0.962-0.987). The mean differences in opening angles between the CT measurements and the manufacturers'' values were 1.2° in seven types of valves, 11.0° in On-X valves, and 15.5° in ATS valves. The manufacturers'' closing angles and those measured by CT showed excellent agreement for all valve types (ICC, 0.953; 95% CI, 0.920-0.972). Among valves with suspected dysfunction, those with limitation of motion (LOM) and an increased pressure gradient (PG) had smaller opening angles than those with LOM only (p < 0.05).Conclusion
Dual-source cardiac CT accurately measures opening and closing angles in most types of mechanical aortic valves, compared with the manufacturers'' values. Opening angles on CT differ according to the type of valve dysfunction and a decreased opening angle may suggest an elevated PG. 相似文献87.
88.
Total costs and clinical outcome of hematopoietic stem cell transplantation in adults with leukemia: comparison between reduced‐intensity and myeloablative conditioning 下载免费PDF全文
Koung Jin Suh Inho Kim Jin Lim Hyerim Ha Seongyeol Park Youngil Koh Sung‐Soo Yoon Seonyang Park 《Clinical transplantation》2015,29(2):124-133
The total cost of hematopoietic stem cell transplantation (HSCT) as well as the financial impact of HSCT on the house holds of patients have been elusive. Between 2005 and 2012, we analyzed 191 HSCT in adult patients with leukemia with reduced‐intensity conditioning (RIC) regimen (n = 79) and with myeloablative conditioning (MAC) regimen (n = 112). The direct medical costs were calculated from healthcare claims obtained from the Seoul National University Hospital, and the direct non‐medical and the indirect costs were calculated from national statistics. The mean direct medical cost was $55 039, direct non‐medical cost was $6394, and indirect cost was $7503 from transplantation to one yr after transplantation in the RIC group and $72 916, $6993, and $9057 in the MAC group, respectively, based on the exchange rate of Korean won 1060 = US$1. The total costs for one yr were $68 938 and $88 967, constituting for 273% and 357% of the per capita income, respectively. The total costs, direct medical costs, and indirect costs showed statistically significant differences (p = 0.006, p = 0.007, and p = 0.017). No significant differences were found for leukemia‐free survival and overall survival. RIC‐HSCT provides lower costs within the first year of transplantation with comparable long‐term clinical outcomes. 相似文献
89.
90.