首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   170644篇
  免费   33301篇
  国内免费   2543篇
耳鼻咽喉   5383篇
儿科学   5944篇
妇产科学   2804篇
基础医学   5729篇
口腔科学   2164篇
临床医学   28100篇
内科学   52738篇
皮肤病学   7671篇
神经病学   16599篇
特种医学   7221篇
外科学   44386篇
综合类   313篇
现状与发展   72篇
一般理论   10篇
预防医学   8108篇
眼科学   3584篇
药学   2222篇
中国医学   64篇
肿瘤学   13376篇
  2024年   524篇
  2023年   4928篇
  2022年   1517篇
  2021年   3829篇
  2020年   6399篇
  2019年   2746篇
  2018年   8141篇
  2017年   7806篇
  2016年   8943篇
  2015年   9037篇
  2014年   16341篇
  2013年   16653篇
  2012年   7244篇
  2011年   7183篇
  2010年   11334篇
  2009年   15044篇
  2008年   7233篇
  2007年   5436篇
  2006年   7845篇
  2005年   5024篇
  2004年   4122篇
  2003年   2994篇
  2002年   3071篇
  2001年   3888篇
  2000年   3073篇
  1999年   3317篇
  1998年   3796篇
  1997年   3589篇
  1996年   3482篇
  1995年   3337篇
  1994年   2038篇
  1993年   1658篇
  1992年   1425篇
  1991年   1447篇
  1990年   1129篇
  1989年   1231篇
  1988年   1062篇
  1987年   882篇
  1986年   937篇
  1985年   750篇
  1984年   599篇
  1983年   564篇
  1982年   566篇
  1981年   438篇
  1980年   402篇
  1979年   333篇
  1978年   364篇
  1977年   418篇
  1975年   294篇
  1972年   321篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.

Background

Available models for predicting lymph node invasion (LNI) in prostate cancer (PCa) patients undergoing radical prostatectomy (RP) might not be applicable to men diagnosed via magnetic resonance imaging (MRI)-targeted biopsies.

Objective

To assess the accuracy of available tools to predict LNI and to develop a novel model for men diagnosed via MRI-targeted biopsies.

Design, setting, and participants

A total of 497 patients diagnosed via MRI-targeted biopsies and treated with RP and extended pelvic lymph node dissection (ePLND) at five institutions were retrospectively identified.

Outcome measurements and statistical analyses

Three available models predicting LNI were evaluated using the area under the receiver operating characteristic curve (AUC), calibration plots, and decision curve analyses. A nomogram predicting LNI was developed and internally validated.

Results and limitations

Overall, 62 patients (12.5%) had LNI. The median number of nodes removed was 15. The AUC for the Briganti 2012, Briganti 2017, and MSKCC nomograms was 82%, 82%, and 81%, respectively, and their calibration characteristics were suboptimal. A model including PSA, clinical stage and maximum diameter of the index lesion on multiparametric MRI (mpMRI), grade group on targeted biopsy, and the presence of clinically significant PCa on concomitant systematic biopsy had an AUC of 86% and represented the basis for a coefficient-based nomogram. This tool exhibited a higher AUC and higher net benefit compared to available models developed using standard biopsies. Using a cutoff of 7%, 244 ePLNDs (57%) would be spared and a lower number of LNIs would be missed compared to available nomograms (1.6% vs 4.6% vs 4.5% vs 4.2% for the new nomogram vs Briganti 2012 vs Briganti 2017 vs MSKCC).

Conclusions

Available models predicting LNI are characterized by suboptimal accuracy and clinical net benefit for patients diagnosed via MRI-targeted biopsies. A novel nomogram including mpMRI and MRI-targeted biopsy data should be used to identify candidates for ePLND in this setting.

Patient summary

We developed the first nomogram to predict lymph node invasion (LNI) in prostate cancer patients diagnosed via magnetic resonance imaging-targeted biopsy undergoing radical prostatectomy. Adoption of this model to identify candidates for extended pelvic lymph node dissection could avoid up to 60% of these procedures at the cost of missing only 1.6% patients with LNI.  相似文献   
92.
93.
94.
95.
96.
97.
98.
Gorlin syndrome (naevoid basal cell carcinoma syndrome) is a genetically linked disorder characterized by the development of multiple basal cell carcinomas (BCCs) throughout life. Cumulative surgery, cryotherapy and other conventional interventions can result in significant disfigurement by middle age. Radiotherapy is contra-indicated because the mutated gene underlying the syndrome, ‘PTCH’, increases sensitivity to ionising radiation, so there is significant likelihood of inducing further tumours in and around the irradiated area. Photodynamic therapy offers a non-invasive treatment option for patients with this condition, with the added advantage of causing minimal scarring.  相似文献   
99.
100.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号