全文获取类型
收费全文 | 3125篇 |
免费 | 227篇 |
国内免费 | 8篇 |
专业分类
耳鼻咽喉 | 14篇 |
儿科学 | 85篇 |
妇产科学 | 54篇 |
基础医学 | 472篇 |
口腔科学 | 59篇 |
临床医学 | 321篇 |
内科学 | 714篇 |
皮肤病学 | 26篇 |
神经病学 | 267篇 |
特种医学 | 129篇 |
外科学 | 546篇 |
综合类 | 31篇 |
预防医学 | 201篇 |
眼科学 | 105篇 |
药学 | 113篇 |
中国医学 | 8篇 |
肿瘤学 | 215篇 |
出版年
2024年 | 4篇 |
2023年 | 43篇 |
2022年 | 51篇 |
2021年 | 130篇 |
2020年 | 80篇 |
2019年 | 102篇 |
2018年 | 133篇 |
2017年 | 89篇 |
2016年 | 114篇 |
2015年 | 111篇 |
2014年 | 172篇 |
2013年 | 196篇 |
2012年 | 290篇 |
2011年 | 305篇 |
2010年 | 182篇 |
2009年 | 149篇 |
2008年 | 204篇 |
2007年 | 196篇 |
2006年 | 171篇 |
2005年 | 162篇 |
2004年 | 137篇 |
2003年 | 96篇 |
2002年 | 94篇 |
2001年 | 15篇 |
2000年 | 8篇 |
1999年 | 12篇 |
1998年 | 11篇 |
1997年 | 8篇 |
1996年 | 8篇 |
1995年 | 10篇 |
1994年 | 10篇 |
1993年 | 4篇 |
1992年 | 2篇 |
1991年 | 4篇 |
1990年 | 6篇 |
1989年 | 7篇 |
1988年 | 2篇 |
1987年 | 2篇 |
1986年 | 3篇 |
1984年 | 5篇 |
1982年 | 2篇 |
1979年 | 4篇 |
1978年 | 3篇 |
1977年 | 2篇 |
1976年 | 5篇 |
1975年 | 8篇 |
1974年 | 2篇 |
1973年 | 2篇 |
1972年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有3360条查询结果,搜索用时 15 毫秒
71.
Lucile Houyel Laurence Cohen Patrick Burlot Anne Heitzmann Damien Bonnet 《Journal of anatomy》2021,238(5):1255-1258
Anomalous connection of the inferior caval vein to the left atrium is exceedingly rare, and has even been considered by some authors an anatomic and embryologic impossibility. This study demonstrates for the first time the existence of this rare malformation, diagnosed on prenatal echo, and confirmed on post-mortem examination in a 24 WG fetus, in association with a common arterial trunk. 相似文献
72.
73.
Nishanth Parameswaran Oriol Mitj Christian Bottomley Cynthia Kwakye Wendy Houinei Allan Pillay Damien Danavall Kai-Hua Chi Ronald C. Ballard Anthony W. Solomon Cheng Y. Chen Sibauk V. Bieb Yaw Adu-Sarkodie David C. W. Mabey Kingsley Asiedu Michael Marks Diana L. Martin 《Journal of clinical microbiology》2021,59(5)
74.
75.
76.
77.
78.
Clara Debarle Vincent Perlbarg Alice Jacquens Mélanie Pélégrini-Issac Marion Bisch Amélie Prigent Blandine Lesimple Elsa Caron Muriel Lefort Eléonore Bayen Damien Galanaud Pascale Pradat-Diehl Louis Puybasset Vincent Degos 《Annals of physical and rehabilitation medicine》2021,64(2):101433
BackgroundTraumatic brain injury (TBI) is a chronic pathology responsible for cognitive disorders impacting outcome. Global clinical outcome several years after TBI may be associated with anatomical sequelae. Anatomical lesions are not well described because characterizing diffuse axonal injury and brain atrophy require using specific MRI sequences with quantitative measures. The best radiologic parameter to describe the lesions long term after TBI is not known.ObjectiveWe aimed to first, assess the global volumetric and diffusion parameters related to long-term outcome after TBI and second, define the most discriminating parameter.MethodsIn this observational study, we included 96 patients with severe TBI and 22 healthy volunteers. The mean delay after TBI was 63.2 months [range 31–119]. The Glasgow Outcome Scale Extended (GOS-E) was used to assess the global long-term clinical outcome. All patients underwent multimodal MRI with measures of brain volume, ventricle volume, global fractional anisotropy (FA) and global mean diffusivity (MD).ResultsAll 96 participants had significant impairment in global FA, global MD, brain volume and ventricle volume as compared with the 22 controls (P < 0.01). Only global MD significantly differed between the “good recovery” group (GOS-E score 7-8) and the other two groups: GOS-E scores 3-4 and 5-6. Brain volume significantly differed between the GOS-E 7-8 and 3-4 groups. Global MD was the most discriminating radiological parameter for the “good recovery” group versus other patients, long term after TBI. FA appeared less relevant at this time. Global atrophy was higher in patients than controls but lacked reliability to discriminate groups of patients.ConclusionGlobal mean diffusivity seems a more promising radiomarker than global FA for discriminating good outcome long term after TBI. Further work is needed to understand the evolution of these long-term radiological parameters after TBI. 相似文献
79.
80.