全文获取类型
收费全文 | 10413篇 |
免费 | 620篇 |
国内免费 | 312篇 |
专业分类
耳鼻咽喉 | 54篇 |
儿科学 | 29篇 |
妇产科学 | 106篇 |
基础医学 | 1162篇 |
口腔科学 | 1455篇 |
临床医学 | 885篇 |
内科学 | 408篇 |
皮肤病学 | 6篇 |
神经病学 | 382篇 |
特种医学 | 1318篇 |
外科学 | 3650篇 |
综合类 | 1099篇 |
预防医学 | 106篇 |
眼科学 | 42篇 |
药学 | 230篇 |
4篇 | |
中国医学 | 342篇 |
肿瘤学 | 67篇 |
出版年
2024年 | 34篇 |
2023年 | 172篇 |
2022年 | 427篇 |
2021年 | 514篇 |
2020年 | 436篇 |
2019年 | 338篇 |
2018年 | 414篇 |
2017年 | 410篇 |
2016年 | 393篇 |
2015年 | 342篇 |
2014年 | 675篇 |
2013年 | 720篇 |
2012年 | 588篇 |
2011年 | 626篇 |
2010年 | 495篇 |
2009年 | 588篇 |
2008年 | 599篇 |
2007年 | 557篇 |
2006年 | 441篇 |
2005年 | 334篇 |
2004年 | 298篇 |
2003年 | 269篇 |
2002年 | 200篇 |
2001年 | 191篇 |
2000年 | 149篇 |
1999年 | 159篇 |
1998年 | 144篇 |
1997年 | 115篇 |
1996年 | 111篇 |
1995年 | 78篇 |
1994年 | 63篇 |
1993年 | 48篇 |
1992年 | 71篇 |
1991年 | 34篇 |
1990年 | 25篇 |
1989年 | 29篇 |
1988年 | 24篇 |
1987年 | 23篇 |
1986年 | 36篇 |
1985年 | 30篇 |
1984年 | 32篇 |
1983年 | 19篇 |
1982年 | 23篇 |
1981年 | 24篇 |
1980年 | 19篇 |
1979年 | 7篇 |
1978年 | 5篇 |
1976年 | 5篇 |
1975年 | 5篇 |
1974年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 546 毫秒
1.
2.
3.
4.
《Diagnostic and interventional imaging》2020,101(6):335-345
This article was designed to provide a pediatric cardiac computed tomography angiography (CCTA) expert panel consensus based on opinions of experts of the Société Française d’Imagerie Cardiaque et Vasculaire diagnostique et interventionnelle (SFICV) and of the Filiale de Cardiologie Pédiatrique Congénitale (FCPC). This expert panel consensus includes recommendations for indications, patient preparation, CTA radiation dose reduction techniques, and post-processing techniques. The consensus was based on data from available literature (original papers, reviews and guidelines) and on opinions of a group of specialists with extensive experience in the use of CT imaging in congenital heart disease. In order to reach high potential and avoid pitfalls, CCTA in children with congenital heart disease requires training and experience. Moreover, pediatric cardiac CCTA protocols should be standardized to acquire optimal images in this population with the lowest radiation dose possible to prevent unnecessary radiation exposure. We also provided a suggested structured report and a list of acquisition protocols and technical parameters in relation to specific vendors. 相似文献
5.
6.
Moises Rodriguez-Gonzalez Antonio Moruno Tirado Reza Hosseinpour Jose Santos de Soto 《Texas Heart Institute journal / from the Texas Heart Institute of St. Luke's Episcopal Hospital, Texas Children's Hospital》2015,42(4):350-356
Anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a rare congenital condition. It responds well to early diagnosis and treatment, but otherwise the prognosis is poor. We present our case series of 12 patients (mean age, 2 ± 2.58 yr; age range, 2 mo–8 yr), emphasizing the diagnostic process and discussing our surgical results. The diagnosis of ALCAPA should be suspected in infants who have dilated cardiomyopathy with electrocardiographic changes that suggest ischemia, and in older children who have isolated mitral regurgitation. When clinical suspicion is high, the results of 2-dimensional echocardiography combined with color-flow Doppler studies in expert hands can establish the diagnosis, thus avoiding angiography in critically ill infants. The treatment of choice in our patients was transfer and reimplantation of the left coronary artery onto the ascending aorta. There were 2 deaths: both were infants in extremis who underwent emergency surgery. An older child with severe ventricular dysfunction was given mechanical ventricular assistance and then heart transplantation. As of this report, all 10 survivors remained well and asymptomatic. 相似文献
7.
Karis Bennett Tanner Vincent Sumathilatha Sakthi-Velavan 《Clinical anatomy (New York, N.Y.)》2022,35(1):52-64
The patellar ligament (PL) is an epiphyseal ligament and is part of the extensor complex of the knee. The ligament has gained attention due to its clinical relevance to autograft and tendinopathy. A variety of anatomical variations of the PL such as aplasia, numerical variations, and vascularity are being reported recently by clinicians and anatomists. The aim of this literature was to review the available literature to provide a consensus regarding anatomic variations of the PL, neurovasculature surrounding the PL, histology of the PL, and various aspects of PL measurements with relevance to the surgical considerations and sex and age-related differences. A narrative review of the patellar ligament was performed by conducting a detailed literature search and review of relevant articles. A total of 90 articles on the patellar ligament were included and were categorized into studies based on anatomical variations, neurovasculature, morphometrics, microanatomy, sex and age-related difference, and ACL reconstruction. The anatomical variations and morphometrics of the PL were found to correlate with the frequency of strain injuries, tendinopathy, and efficacy of the PL autograft in anterior cruciate ligament reconstruction. The sex differences in PL measurements and the effect of estrogen on collagen synthesis explained a higher incidence of patellar tendinopathy in women. An awareness of its variations enables careful selection of surgical incisions, thereby avoiding complications related to nerve injury. Accurate knowledge of the PL microanatomy assists in understanding the mechanism of ligament degeneration, rupture, autograft harvesting, and ligamentization results. 相似文献
8.
Jae Hwang Song Chan Kang Deuk Soo Hwang Dong Hun Kang Yong Hwan Kim 《Foot and Ankle Surgery》2019,25(6):748-754
BackgroundThe purpose of this study was to investigate and compare the clinical outcomes of dorsal suspension with those of neurectomy for the treatment of Morton’s neuroma.MethodsWe conducted a retrospective study of dorsal suspension and neurectomy group. The dorsal suspension was performed by dorsal transposition of neuroma over the dorsal transverse ligament after neurolysis. The visual analog scale (VAS), the Foot and Ankle Ability Measure (FAAM), postoperative satisfaction, and complications were evaluated.ResultsBoth groups reported significant pain relief, and there were no significant differences between the groups with respect to postoperative pain. The postoperative FAAM outcomes showed no significant between-group differences. Satisfaction analysis showed ‘excellent’ and ‘good’ results in the dorsal suspension and neurectomy groups (95% and 77.7%, respectively). Complications of numbness and paresthesia reported in the dorsal suspension group (5% and 5%, respectively) were significantly fewer than those of neurectomy group (61.1% and 33.3%, respectively) (both, p < .05).ConclusionsWith its favorable results, dorsal suspension can be another operative option for the treatment of Morton’s neuroma.Level of Evidence: Level III, retrospective comparative case series. 相似文献
9.
《Journal of Clinical Orthopaedics and Trauma》2019,10(4):706-709
ObjectiveThe purpose of this study was to evaluate the visibility of the anterolateral ligament (ALL) by magnetic resonance imaging (MRI) in patients with chronic anterior cruciate ligament (ACL) rupture.Materials and methodsThis retrospective case – control study compared 1.5 - T MRI scans for 50 patients with a chronic ACL rupture with those of a control group of 50 patients with an intact ACL. The ALL was evaluated in three portions: femoral, meniscal, and tibial. The status of each portion was classified as visualized or non-visualized. Two radiologists separately reviewed all the MRI scans to evaluate interobserver reliability.ResultsAt least one portion of the ALL was visualized in 100% of the control group and 72% of the chronic ACL rupture group. All three portions of the ALL were identified in 72% of the control group but only 10% of the chronic ACL rupture group. In both groups, the most commonly visualized portion was the meniscal portion and the least visualized was the tibial portion. In 18% of the chronic ACL rupture group, no portion of the ALL was visualized.ConclusionsThe visibility of the ALL of the knee was significantly lower in patients with a chronic ACL rupture than in those with an intact one. 相似文献
10.
目的探讨关节镜下使用TightRope治疗后交叉韧带(PCL)撕脱骨折的技术应用和临床疗效。方法 12例膝关节PCL撕脱骨折患者在关节镜下使用TightRope固定PCL撕脱骨块。术后1周开始在支具保护下被动活动膝关节,术后10个月评估膝关节功能恢复情况。结果 12例患者均获随访,时间10~14个月,平均12.6个月,骨折均Ⅰ期愈合。1例屈膝受限15°,无伸膝受限;2例后抽屉试验(+)。Lysholm膝关节功能评分术前(45.6±6.3)分,术后10个月(87.8±4.8)分,差异有统计学意义(P 0.05)。结论关节镜下使用TightRope治疗PCL撕脱骨折固定可靠,操作相对简单,疗效满意。 相似文献