全文获取类型
收费全文 | 1828篇 |
免费 | 73篇 |
国内免费 | 22篇 |
专业分类
耳鼻咽喉 | 28篇 |
儿科学 | 119篇 |
妇产科学 | 59篇 |
基础医学 | 131篇 |
口腔科学 | 130篇 |
临床医学 | 144篇 |
内科学 | 349篇 |
皮肤病学 | 26篇 |
神经病学 | 125篇 |
特种医学 | 61篇 |
外科学 | 476篇 |
综合类 | 26篇 |
预防医学 | 18篇 |
眼科学 | 53篇 |
药学 | 103篇 |
中国医学 | 2篇 |
肿瘤学 | 73篇 |
出版年
2023年 | 11篇 |
2022年 | 16篇 |
2021年 | 23篇 |
2020年 | 22篇 |
2019年 | 13篇 |
2018年 | 34篇 |
2017年 | 25篇 |
2016年 | 36篇 |
2015年 | 78篇 |
2014年 | 94篇 |
2013年 | 110篇 |
2012年 | 132篇 |
2011年 | 134篇 |
2010年 | 64篇 |
2009年 | 58篇 |
2008年 | 118篇 |
2007年 | 129篇 |
2006年 | 130篇 |
2005年 | 142篇 |
2004年 | 126篇 |
2003年 | 109篇 |
2002年 | 89篇 |
2001年 | 37篇 |
2000年 | 38篇 |
1999年 | 36篇 |
1998年 | 11篇 |
1997年 | 17篇 |
1996年 | 13篇 |
1995年 | 8篇 |
1994年 | 7篇 |
1993年 | 8篇 |
1992年 | 9篇 |
1991年 | 14篇 |
1990年 | 4篇 |
1989年 | 5篇 |
1988年 | 4篇 |
1987年 | 3篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1984年 | 3篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1974年 | 2篇 |
1972年 | 2篇 |
1970年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有1923条查询结果,搜索用时 15 毫秒
941.
Pinar Ozturk Ersin Aksay Nese Colak Oray Basak Bayram Onur Basci Duygu Tokgoz 《The American journal of emergency medicine》2018,36(3):362-365
Objective
Many studies in the literature related to the investigation of the sensitivity and specificity of ultrasound examinations in lateral malleolar fractures is limited. The aim of this study is to investigate the sensitivity and specificity of ultrasound examinations performed by emergency physicians in fractures who are presented to the emergency department with blunt lateral malleolar trauma.Method
Patients over 18 years of age who were admitted to the ED with lateral malleolar tenderness were enrolled to this study with convenience sampling. Ultrasonographic examination was performed by emergency physicians. Following the ultrasound examination, a two-sided X-ray was performed. In the case of inconsistency between the US exam and the X-ray evaluated by the emergency physician, a CT was performed on the patients. The X-ray or CT imaging evaluation of an orthopedic surgeon was accepted as the gold standard.Results
A hundred-twenty patients were included in the study. Fractures in the lateral malleolus were detected in 47 patients. The sensitivity of X-ray in the diagnosis of lateral malleolar fractures was 92.8%, (95% CI, 79.4–98.1) and the specificity was 100% (95% CI, 89.5–100), while the sensitivity of US exam was 100% (95% CI, 94.1–100), and the specificity was 93% (95% CI, 85–97.6). X-ray gave false negative results in 3 patients, whereas US gave false positive results in 5 patients.Conclusion
In patients admitted to ED with lateral malleolus tenderness, the sensitivity of the ultrasound examination performed by emergency physicians regarding diagnosis of lateral malleolar fracture is higher than X-ray. 相似文献942.
M Erkan S Karaçay OA Atilla G Uzel E Ulkür E Yldrm 《The Journal of craniofacial surgery》2012,23(5):e407-e410
ABSTRACT: Oligodontia may cause various problems during orthognathic surgery because it may be difficult to fix the surgical guide splints. The aim of this clinical report was to present an alternative technique for intermaxillary fixation of a patient with oligodontia and facial deformity. A 20-year-old male patient, whose 8 maxillary and 11 mandibular teeth were congenitally missing, was treated using bimaxillary orthognathic surgery. Before the surgical approach, fixed mandibular prosthesis containing pins on the vestibule sides of the crowns was constructed to provide anchorage for intermaxillary splint and to achieve occlusal stability and vertical dimension during the surgery. This prosthesis was also used to hang intraoral elastics during the postoperative orthodontic treatment. At the end of treatment, these pins were cut, composite restoration material was applied to camouflage the places of the pins, and the patient continued to use this prosthesis. The patient gained an appropriate facial aesthetics and oral function using multidisciplinary approach. 相似文献
943.
944.
Süleyman Özdemir Özgür Tarkan Ülkü Tuncer Özgür Sürmelioğlu Murat Doğrusöz Melek Ergin 《Journal of cranio-maxillo-facial surgery》2013,41(2):140-143
Extramedullary plasmacytomas are localized tumours formed of monoclonal plasma cells in an extra-skeletal area. They constitute approximately 3% of all neoplasms originating from plasma cells. They generally display a destructive course. When the literature in English was reviewed, only 19 cases with the primary disease localized in the sphenoid sinus were found. We present the case of a 50-year-old male patient who presented with gradually increasing visual loss over 6 weeks, whose radiological tests revealed a formation of mass in the sphenoid sinus pressing against the optic nerve and internal carotid artery. A biopsy obtained by endoscopic sinus surgery was reported to be a plasmacytoma. A diagnosis of extramedullary plasmacytoma was made after investigations for other neoplastic plasma cell conditions proved negative.Extramedullary plasmacytomas were assessed by reviewing the literature. 相似文献
945.
946.
Sea-blue histiocytosis is one of the six types of Niemann-Pick disease. It is characterized by childhood onset of hepatosplenomegaly, lack of neurological involvement and diminished sphingomyelinase activity. Pulmonary system is rarely involved sea-blue histiocytosis. In this paper, we present a 39-years-old male who had previously diagnosed as sea-blue histiocytosis at the age of 15. He was admitted to our clinic due to productive cough, hemoptysis, fever and weight loss. His symptoms did not resolve with the antibiotic treatment and further investigations revealed pulmonary involvement of sea-blue histiocytosis. After diagnostic bronchoalveolar lavage, his symptoms were improved, interestingly. This rare entity was discussed with literature survey. 相似文献
947.
Lafci G Yalcinkaya A Ecevit AN Tasoglu I Kadirogullari E Turkvatan A Cagli K 《Texas Heart Institute journal / from the Texas Heart Institute of St. Luke's Episcopal Hospital, Texas Children's Hospital》2012,39(3):398-400
We describe the treatment of an extremely rare case of interrupted aortic arch, annuloaortic ectasia, and aortic regurgitation in a 34-year-old man who presented with dyspnea and palpitation. We performed a single-stage operation involving aortic root reconstruction and valve repair with concomitant extra-anatomic bypass from the ascending to the descending aorta with a Dacron tube graft. The patient made a full recovery. To the best of our knowledge, this is the first such report in the English medical literature. 相似文献
948.
949.
Murat Cakir Ahmet Tekin Tevfik Kücükkartallar Celalettin Vatansev Faruk Aksoy Adil Kartal Fatma B. Tuncer 《Breast care (Basel, Switzerland)》2012,7(5):394-396
Background
Axillary lymph node dissection plays an important role in breast cancer management in terms of staging, prediction of prognosis, determination of adjuvant therapy, and local control of the primary tumor. The objective of this study was to evaluate the axillary lymph node involvement in multicentric breast tumors and breast tumors with nipple involvement in comparison with unifocal tumors.Patients and Methods
We reviewed the records of 267 patients with stage I or IIA disease. The rates of axillary lymph node metastasis (ALNM) in patients with unifocal tumors, multicentric tumors, or nipple involvement were compared.Results
209 (78%) patients had unifocal tumors, 24 (8%) had multicentric tumors, and 34 (12%) had nipple involvement. The incidence of ALNM was 9.76% in patients with unifocal tumors, 24.84% in patients with multicentric tumors, and 36.71% in patients with nipple involvement. Hence, the incidence of ALNM was significantly higher in patients with nipple involvement or multicentric tumors than in patients with unifocal tumors.Conclusion
Our data suggest that compared to unifocal tumors, breast tumors with nipple involvement or multiple foci show a significantly higher incidence of ALNM which is a predictor of a poor prognosis. 相似文献950.
Murat Yesilaras Ersin Aksay Ozge Duman Atilla Mustafa Sever Onder Kalenderer 《The American journal of emergency medicine》2014