全文获取类型
收费全文 | 1901篇 |
免费 | 120篇 |
国内免费 | 66篇 |
专业分类
耳鼻咽喉 | 9篇 |
儿科学 | 77篇 |
妇产科学 | 19篇 |
基础医学 | 195篇 |
口腔科学 | 32篇 |
临床医学 | 156篇 |
内科学 | 375篇 |
皮肤病学 | 60篇 |
神经病学 | 122篇 |
特种医学 | 404篇 |
外科学 | 170篇 |
综合类 | 62篇 |
一般理论 | 3篇 |
预防医学 | 113篇 |
眼科学 | 32篇 |
药学 | 173篇 |
中国医学 | 3篇 |
肿瘤学 | 82篇 |
出版年
2022年 | 11篇 |
2021年 | 40篇 |
2020年 | 14篇 |
2019年 | 29篇 |
2018年 | 39篇 |
2017年 | 19篇 |
2016年 | 26篇 |
2015年 | 42篇 |
2014年 | 43篇 |
2013年 | 46篇 |
2012年 | 62篇 |
2011年 | 70篇 |
2010年 | 47篇 |
2009年 | 54篇 |
2008年 | 58篇 |
2007年 | 104篇 |
2006年 | 80篇 |
2005年 | 73篇 |
2004年 | 63篇 |
2003年 | 59篇 |
2002年 | 45篇 |
2001年 | 40篇 |
2000年 | 26篇 |
1999年 | 51篇 |
1998年 | 75篇 |
1997年 | 72篇 |
1996年 | 68篇 |
1995年 | 68篇 |
1994年 | 46篇 |
1993年 | 54篇 |
1992年 | 28篇 |
1991年 | 29篇 |
1990年 | 35篇 |
1989年 | 65篇 |
1988年 | 48篇 |
1987年 | 51篇 |
1986年 | 32篇 |
1985年 | 28篇 |
1984年 | 21篇 |
1983年 | 10篇 |
1982年 | 16篇 |
1981年 | 24篇 |
1980年 | 20篇 |
1979年 | 22篇 |
1978年 | 10篇 |
1977年 | 23篇 |
1976年 | 15篇 |
1975年 | 21篇 |
1974年 | 16篇 |
1972年 | 7篇 |
排序方式: 共有2087条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
We present a case of aggressive fibromatosis of the scalene and longus colli muscles with surgically proved secondary involvement of the brachial plexus and carotid sheath in a 29-year-old woman in whom MR imaging failed to show involvement of the carotid sheath. The well-defined lesion was isointense on T1-weighted images and hyperintense on T2-weighted images relative to adjacent normal muscle and enhanced brightly. 相似文献
5.
Hillmann JS; Mesgarzadeh M; Revesz G; Bonakdarpour A; Clancy M; Betz RR 《Radiology》1987,165(3):769-773
Proximal femoral focal deficiency, an uncommon congenital anomaly, necessitates early radiologic classification for surgical planning and treatment. Objective radiographic criteria, including femoral length index, acetabular depth index, acetabular angle index, and shape of the proximal femur were determined in 49 patients before cartilaginous ossification of the femoral capital epiphysis; final classification was based on follow-up radiographs or findings at arthrography or surgery. These parameters were analyzed to determine the accuracy and contributions of each in classification. Correct classification into one of three groups was possible in 86% of cases with use of three of the parameters: femoral length index, acetabular depth index, and shape of the proximal femur. The acetabular angle was found to contribute insignificantly to classification. Magnetic resonance imaging, used in only one case, depicted the nonossified cartilaginous femoral capital epiphysis, thus obviating the need for invasive diagnostic procedures and facilitating early classification. 相似文献
6.
Rupture of the distal biceps tendon: evaluation with MR imaging 总被引:2,自引:0,他引:2
7.
8.
LEE JS IM HH JUNG Y JUNG IS JANG JY CHUN YK CHO YD KIM JO CHO JY KIM YS SHIM CS & KIM BS 《Neurogastroenterology and motility》2006,18(6):493-494
Background: Recent development of extracorporeal magnetic stimulation (ECMS) which uses current‐changing magnetic fields allows the induction of electrical stimulation in the desired deep tissue. Recent study showed the sacral nerve stimulation reduces corticoanal excitability that may play a functional role in anal continence mechanisms. Preliminary study shows that ECMS of sacral nerve can modify pelvic floor function and expel rectal balloon in patients with pelvic floor dyssynergia (PFD). Aims: To evaluate the effect of ECMS compared with biofeedback therapy (BF) in patients with PFD. Methods and Materials: Thirty‐eight patients who fulfilled Rome II criteria for PFD by colon transit time and anorectal function tests, were randomly treated with 8 sessions of ECMS (2/weeks; n = 19) at prone position or BF (2/weeks; n = 19) at sitting position. Stimulation parameters were set at 50–80% of maximum intensity, 10 and 50 Hz frequency, 3 s burst length with 3 and 6 s off using arm‐typed stimulator (BioCom‐1000, Mcube Co., Korea). Symptom scores for constipation with/without anorectal function test were repeatedly measured after each treatment. Response was defined as 50% or more decreased symptom score after treatment (partial response: 30–50%, poor: <30%). Results: Fifteen patients (age 49.1 ± 13.4 years, mean ± SD; 4 men) completed 8 session of BF and 14 patients (54.5 ± 17.6 years, 3 men) completed 8 session of ECMS. Four patients of BF group discontinued treatment due to unsatisfactory therapeutic effect (n = 1) and withdrew consent (n = 3) and 5 patients of ECMS group discontinued treatment because of same reasons (n = 1, 4). Total symptom scores were significantly decreased after treatment of 8 session in both treatment groups (13.4 ± 6.6 vs. 4.3 ± 4.0 for BF, p = 0.009; 14.9 ± 5.6 vs. 3.4 ± 4.0 for ECMS, p < 0.001). Bowel movements per week were also significantly increased after treatment in both groups (median 2 vs. 7 for BF, p = 0.035; median 2 vs. 7 for ECMS, p = 0.008). Thirteen out of 15 patients showed response in BF group and 12 out of 14 showed good response in ECMS group. No adverse effects in both groups. Conclusions: ECMS is as effective as BF for the treatment of PFD. Long‐term effect of ECMS for the patients with pelvic floor dyssynergia need to be evaluated in the near future. 相似文献
9.
10.