全文获取类型
收费全文 | 4074篇 |
免费 | 207篇 |
国内免费 | 35篇 |
专业分类
耳鼻咽喉 | 37篇 |
儿科学 | 83篇 |
妇产科学 | 38篇 |
基础医学 | 409篇 |
口腔科学 | 97篇 |
临床医学 | 325篇 |
内科学 | 1121篇 |
皮肤病学 | 77篇 |
神经病学 | 263篇 |
特种医学 | 306篇 |
外科学 | 629篇 |
综合类 | 22篇 |
预防医学 | 93篇 |
眼科学 | 63篇 |
药学 | 247篇 |
中国医学 | 25篇 |
肿瘤学 | 481篇 |
出版年
2023年 | 29篇 |
2022年 | 56篇 |
2021年 | 116篇 |
2020年 | 63篇 |
2019年 | 49篇 |
2018年 | 88篇 |
2017年 | 64篇 |
2016年 | 77篇 |
2015年 | 78篇 |
2014年 | 116篇 |
2013年 | 137篇 |
2012年 | 185篇 |
2011年 | 206篇 |
2010年 | 117篇 |
2009年 | 100篇 |
2008年 | 157篇 |
2007年 | 194篇 |
2006年 | 173篇 |
2005年 | 191篇 |
2004年 | 190篇 |
2003年 | 217篇 |
2002年 | 219篇 |
2001年 | 147篇 |
2000年 | 115篇 |
1999年 | 123篇 |
1998年 | 62篇 |
1997年 | 58篇 |
1996年 | 42篇 |
1995年 | 39篇 |
1994年 | 29篇 |
1993年 | 26篇 |
1992年 | 81篇 |
1991年 | 63篇 |
1990年 | 78篇 |
1989年 | 79篇 |
1988年 | 66篇 |
1987年 | 49篇 |
1986年 | 39篇 |
1985年 | 55篇 |
1984年 | 39篇 |
1983年 | 31篇 |
1981年 | 14篇 |
1980年 | 17篇 |
1979年 | 28篇 |
1978年 | 25篇 |
1977年 | 17篇 |
1974年 | 22篇 |
1973年 | 15篇 |
1970年 | 21篇 |
1967年 | 13篇 |
排序方式: 共有4316条查询结果,搜索用时 15 毫秒
71.
72.
Yoshihiro Omura Hirotoshi Imamura Shoichi Tani Hidemitsu Adachi Ryu Fukumitsu Tadashi Sunohara Nobuyuki Fukui Natsuhi Sasaki Tatsumaru Fukuda Tomoaki Akiyama Shinji Kajiura Masashi Shigeyasu Kento Asakura Ryo Horii Nobuyuki Sakai 《Journal of stroke and cerebrovascular diseases》2021,30(8):105853
BackgroundCopolymer (Onyx) embolization is an effective treatment for dural arteriovenous fistula (dAVF), however, some dAVFs have multiple, high-flow feeding vessels, resulting in insufficient embolization. For the treatment of such patients, we have developed a novel flow-control technique, the ‘damp-and-push technique’. The purpose of this study was to evaluate the technical efficiency and safety of this technique.MethodsSeven patients who had been diagnosed with intracranial dAVF were treated by transarterial Onyx embolization using the damp-and-push technique between 2016 and 2019. This technique was designed to reduce blood flow to the shunt site using a balloon catheter in the major feeding vessel other than the one injected with Onyx, leading to better Onyx penetration and enabling more controlled embolization of complex dAVFs. Retrospectively collected data were reviewed to assess the occlusion rates and clinical outcomes.ResultsThe dAVF was at a transverse sinus-sigmoid sinus junction in four patients, in the superior sagittal sinus in two, and in the tentorium in one. Five cases were Cognard type Ⅱb and two cases were Cognard type Ⅳ. All the patients were treated by transarterial Onyx injection via the main feeding vessel, combined with flow reduction in the other main feeding vessel using a balloon catheter. Complete occlusion was achieved in six patients and elimination of cerebral venous reflux was achieved in all the patients. There were no immediate or delayed post-interventional complications.ConclusionsTransarterial Onyx embolization of dAVF using the damp-and-push technique is safe and yields a high complete occlusion rate. 相似文献
73.
74.
Yui Kojima Akira Takasawa Masaki Murata Keigo Akagashi Tomomi Inoue Mamie Hara Yuichi Tokunaga Takashi Minase Tadashi Hasegawa Norimasa Sawada 《Pathology international》2013,63(3):183-187
The lipid cell variant of urothelial carcinoma is a rare variant of urinary bladder cancer, comprised of lipoblast‐like cells. In this report, we describe a case of the lipid cell variant of aggressive urothelial carcinoma. A 78‐year‐old man was admitted to the hospital because of gross hematuria. On cystoscopy, an ulcerative lesion, non‐papillary architecture, was observed in the lateral wall of the bladder. Transurethral resection was performed. Histopathological findings of the bladder tumor indicated neoplastic cells forming irregular solid nests and sheets. Lipoblast‐like neoplastic cells that had eccentric nuclei and cytoplasmic vacuoles were observed, not only in the resected specimen, but also in urine samples. On mucin histochemistry, the tumor cell cytoplasm contained no neutral or acidic mucus. The lipoblast‐like cells were positive for cytokeratins (AE1/AE3, CK7) and adipophilin, known as a protein associated with neutral lipid synthesis. In general, it is difficult to prove the existence of intracytoplasmic lipid in formalin‐fixed paraffin‐embedded materials. This is the first report in which the presence of lipid in vacuoles of the lipid cell variant has been verified by immunohistochemistry. 相似文献
75.
Kodesho Taiki Taniguchi Keigo Kato Takuya Mizoguchi Shougo Yamakoshi Yoshiki Watanabe Kota Fujimiya Mineko Katayose Masaki 《Journal of Medical Ultrasonics》2021,48(2):115-121
Journal of Medical Ultrasonics - Estimation of muscle passive force from elasticity using shear wave elastography (SWE) has been reported. However, the relationship between the elasticity and... 相似文献
76.
77.
78.
79.
80.
Takeshi Imura Yuki Nagasawa Tetsuji Inagawa Naoki Imada Hiroaki Izumi Katsuya Emoto Itaru Tani Hiroyuki Yamasaki Yuichiro Ota Shuichi Oki Tadanori Maeda Osamu Araki 《Journal of Physical Therapy Science》2015,27(5):1383-1386
[Purpose] The efficacy of diffusion tensor imaging in the prediction of motor outcomes
and activities of daily living function remains unclear. We evaluated the most appropriate
diffusion tensor parameters and methodology to determine whether the region of interest-
or tractography-based method was more useful for predicting motor outcomes and activities
of daily living function in stroke patients. [Subjects and Methods] Diffusion tensor
imaging data within 10 days after stroke onset were collected and analyzed for 25
patients. The corticospinal tract was analyzed. Fractional anisotropy, number of fibers,
and apparent diffusion coefficient were used as diffusion tensor parameters. Motor
outcomes and activities of daily living function were evaluated on the same day as
diffusion tensor imaging and at 1 month post-onset. [Results] The fractional anisotropy
value of the affected corticospinal tract significantly correlated with the motor outcome
and activities of daily living function within 10 days post-onset and at 1 month
post-onset. Tthere were no significant correlations between other diffusion tensor
parameters and motor outcomes or activities of daily living function. [Conclusion] The
fractional anisotropy value of the affected corticospinal tract obtained using the
tractography-based method was useful for predicting motor outcomes and activities of daily
living function in stroke patients.Key words: Stroke, Diffusion tensor tractography, Activities of daily living function 相似文献