全文获取类型
收费全文 | 3206篇 |
免费 | 147篇 |
国内免费 | 14篇 |
专业分类
耳鼻咽喉 | 27篇 |
儿科学 | 55篇 |
妇产科学 | 40篇 |
基础医学 | 637篇 |
口腔科学 | 25篇 |
临床医学 | 216篇 |
内科学 | 901篇 |
皮肤病学 | 54篇 |
神经病学 | 237篇 |
特种医学 | 142篇 |
外科学 | 317篇 |
综合类 | 21篇 |
预防医学 | 212篇 |
眼科学 | 19篇 |
药学 | 242篇 |
中国医学 | 8篇 |
肿瘤学 | 214篇 |
出版年
2023年 | 23篇 |
2022年 | 96篇 |
2021年 | 137篇 |
2020年 | 65篇 |
2019年 | 75篇 |
2018年 | 78篇 |
2017年 | 67篇 |
2016年 | 81篇 |
2015年 | 92篇 |
2014年 | 124篇 |
2013年 | 170篇 |
2012年 | 260篇 |
2011年 | 273篇 |
2010年 | 170篇 |
2009年 | 103篇 |
2008年 | 195篇 |
2007年 | 181篇 |
2006年 | 169篇 |
2005年 | 167篇 |
2004年 | 144篇 |
2003年 | 128篇 |
2002年 | 107篇 |
2001年 | 22篇 |
2000年 | 12篇 |
1999年 | 30篇 |
1998年 | 12篇 |
1997年 | 14篇 |
1995年 | 12篇 |
1994年 | 9篇 |
1992年 | 20篇 |
1991年 | 11篇 |
1990年 | 18篇 |
1989年 | 8篇 |
1988年 | 14篇 |
1985年 | 14篇 |
1984年 | 12篇 |
1983年 | 8篇 |
1982年 | 11篇 |
1981年 | 8篇 |
1979年 | 14篇 |
1978年 | 9篇 |
1977年 | 10篇 |
1974年 | 14篇 |
1973年 | 22篇 |
1972年 | 16篇 |
1971年 | 14篇 |
1970年 | 14篇 |
1969年 | 8篇 |
1967年 | 8篇 |
1966年 | 8篇 |
排序方式: 共有3367条查询结果,搜索用时 0 毫秒
81.
Hlivák P Peichl P Cihák R Wichterle D Kautzner J 《Journal of cardiovascular electrophysiology》2012,23(1):98-101
We present a 34-year-old woman with idiopathic ventricular tachycardia that resisted 2 previous attempts for catheter ablation and was successfully ablated in the myocardial extension within the noncoronary aortic cusp. 相似文献
82.
83.
84.
85.
AIM: To assess the role of orthoptics in referring patients with orbital floor blowout fracture (OFBF) for conservative or surgical treatment and based on the results, to propose a scoring system for such decision making.
METHODS: A retrospective analysis of 69 patients with OFBF was performed (35 treated conservatively, 34 surgically). The role of orthoptics in referring to surgery or conservative treatment was retrospectively evaluated, the factors with the highest significance for decision making were identified, and a scoring system proposed using Logistic regression.
RESULTS: According to defined criteria, the treatment was unsuccessful in 2 (6%) surgically treated and only in one (3%) conservatively treated patient. The proposed scoring system includes the defect size and several values resulting from the orthoptic examination, the elevation of the eyebulb measured on Lancaster screen being the most significant.
CONCLUSION: The study demonstrates the benefits of orthoptic examination when making decisions on conservative or surgical treatment and for diagnosing ocular motility disorder (with or without binocular diplopia) in OFBF patients. The proposed scoring system could, following verification in a prospective study, become a valuable adjunctive tool. 相似文献
86.
Milan Hora Petr Stránský Ivan Trávníček Tomáš Ürge Viktor Eret Boris Kreuzberg Jan Baxa Hynek Mírka Fredrik Petersson Ondřej Hes Jiří Ferda 《World journal of urology》2013,31(5):1171-1176
Purpose
The new generation of 3TMRI has improved spatial and time resolutions, which are favourable in imaging of the renal vasculature. In this study, we have compared the imaging findings of the renal blood vessels using 3TMRI and CT with intraoperative assessment of the renal vasculature as gold standard.Methods
This prospective study was approved by the local ethical committee. Between 4/2011 and 12/2011, 80 patients with renal tumours underwent 3TMRA (angiography) (Magnetom SKYRA 3T, Siemens). Twenty of the patients were also examined with CT AG. The results of the CTA- and MRA-imaging studies were correlated with the intraoperative assessment of the renal vessels.Results
Seventy patients (87.5 %) had a detailed intraoperative assessment of the renal vessels. The sensitivities for CTA and MRA were 88.2 and 88.6 %, respectively. All discrepancies between imaging studies and intraoperative findings were due to inability to identify small polar vessels. The results of MRA were concordant with CTA in 85.0 % of cases. The (three) discrepancies between MRI and CT were due to failure of MRI in identifying small polar vessels.Conclusions
(1) 3TMRA gives detailed information about the renal vasculature including its topographical anatomy. (2) With MRI, small aberrant vessels are more frequently missed than with CTA. (3) CTA remains the gold standard. However, MRA may be used for planning of laparoscopic operations. (4) The quality of the 3D reconstruction is highly depending on the skills of the radiologist. 相似文献87.
Eric Barret Youness Ahallal Rafael Sanchez-Salas Marc Galiano Jean-Marc Cosset Pierre Validire Petr Macek Matthieu Durand Dominique Prapotnich François Rozet Xavier Cathelineau 《European urology》2013
Background
Focal therapy (FT) for prostate cancer (PCa) seems to be part of a natural evolution in the quest to improve the management of early organ-confined disease.Objective
To assess the morbidity of the initial experience of FT in a tertiary referral center for PCa management.Design, setting, and participants
From 2009 to 2011, a total of 1213 patients with clinically localized PCa were treated at our institution. Of these patients, 547 were considered to have indolent disease according to the D’Amico criteria for low-risk disease plus unilateral disease with a maximum of three positive biopsies. A total of 106 patients underwent FT using high-intensity focused ultrasonography (HIFU), brachytherapy, cryotherapy, or vascular-targeted photodynamic therapy (VTP).Outcome measurements and statistical analysis
Complications were prospectively recorded and graded according to the Clavien-Dindo scale. Data were prospectively collected and retrospectively analyzed.Results and limitations
This study included 106 patients, median age 66.5 yr (interquartile range [IQR]): 61–73), who had a prostate hemiablation; 50 patients (47%) had cryotherapy, 23 patients (22%) had VTP, 21 patients (20%) received HIFU, and 12 patients (11%) had brachytherapy. The median prostate-specific antigen (PSA) level was 6.1 ng/ml (IQR: 5–8.1), all the patients had a biopsy Gleason score of 6, and the median prostate weight was 43 g (IQR: 33–55). The median International Prostate Symptom Score was 6 (IQR: 3–10), and the median International Index of Erectile Function score was 20 (IQR: 15–23). After treatment, the median PSA at 3, 6, and 12 mo was 3.1 2.9, and 2.7 ng/ml (IQR: 2–5.1, 1.1–4.7, and 1–4.4), respectively. Thirteen percent of the patients experienced treatment-related complications. There were 11 minor medical complications (10 grade 1 complications and 1 grade 2 complication), 2 grade 3 complications, and no grade 4 or higher complications.Conclusions
FT for a highly selected population with PCa is feasible and had an acceptable morbidity with <2% major complications. 相似文献88.
Vladimir Balik Petr Kolembus Marian Svajdler Igor Sulla Miroslav Vaverka Lumir Hrabalek 《Clinical neurology and neurosurgery》2013
Objective
This report illustrates the rare rapid spontaneous redistribution of an acute intracranial supratentorial subdural hematoma (AISSDH) to the entire spinal subdural space (SSS). The study is also unique in that the spinal subdural hematoma (SSH) manifested by the extremely rare Pourfour du Petit Syndrome (PPS).Methods
A 66-year-old man sustained blunt head trauma. On admission to the regional hospital, he scored 6 on GCS and his pupils were of equal size reacting to light. Initial computed tomography (CT) scan showed a unilateral AISSDH. The patient was referred to our department and arrived 16 h following the accident, at which time a repeat CT scan revealed almost complete resolution of the AISSDH without clinical improvement. On the 9th postinjury day transient anisocoria and tachycardia without spinal symptomatology developed. Since neither neurological examination nor follow-up CT scans showed intracranial pathology explaining the anisocoria, the patient was treated further conservatively. During the next 3 days circulatory instability developed and the patient succumbed to primary traumatic injury. Autopsy revealed a SSH occupying the entire SSS.Conclusion
This case calls attention to the unique combination of the displacement of an AISSDH to the SSS and the presentation of this clinical entity by the PPS. 相似文献89.
Joanna Jędrzejczak Petr Marusic Sulev Haldre Beata Majkowska-Zwolińska Veneta Bojinova-Tchamova Ruta Mameniskiene Ioana Mindruta Igor M. Ravnik Zoltan Szupera Pavol Sykora Aleksandrs Verzbickis Jerzy Daniluk 《Seizure》2013,22(6):452-456
PurposeThe aim of this survey was to review and compare the current approaches to epilepsy management in Central and Eastern EU (CEEU) countries.MethodThe questionnaire was sent to ten invited experts from Bulgaria, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Romania, Slovakia, and Slovenia. It focused on the treatment of adults.ResultsThe number of neurologists and epilepsy reference centers is highly variable in CEEU countries. None of the analyzed states has a formal specialization in epileptology. No universal state-approved criteria for reference centers exist in Czech Republic, Estonia, Hungary, Latvia, and Slovenia. Generally, the protocols for epilepsy treatment in CEEU countries, including drug-resistant epilepsy, are in accordance with international guidelines; however, most countries have their own national standards of care and some have local clinical guidelines. Also, the reimbursement systems for antiepileptic drugs in CEEU countries are highly variable. Seven countries have epilepsy surgery centers. The costs of epilepsy surgeries are fully reimbursed, procedures performed abroad may also be covered. The length of time spent on waiting lists for surgery following the completion of preoperative investigations varies from two weeks to three years. The fraction of patients who qualified and were operated on within 12 months ranges from 20% to 100%.ConclusionThe lack of unified procedures pertaining to the evaluation and therapy of epilepsy is reflected by marked differences in access to treatment modalities for patients from CEEU countries. 相似文献
90.
Zogala David Rucka David Ptacnik Vaclav Cerny Vladimir Trnka Jiri Varejka Petr Heller Samuel Lambert Lukas 《Annals of nuclear medicine》2019,33(8):594-605
Annals of Nuclear Medicine - To evaluate the diagnostic performance of 18F-FDG PET/CT in the detection of stent graft infection (SGI). In a retrospective study, two nuclear medicine physicians have... 相似文献