全文获取类型
收费全文 | 1623篇 |
免费 | 88篇 |
国内免费 | 33篇 |
专业分类
耳鼻咽喉 | 26篇 |
儿科学 | 65篇 |
妇产科学 | 20篇 |
基础医学 | 154篇 |
口腔科学 | 27篇 |
临床医学 | 147篇 |
内科学 | 378篇 |
皮肤病学 | 111篇 |
神经病学 | 38篇 |
特种医学 | 217篇 |
外科学 | 180篇 |
综合类 | 42篇 |
预防医学 | 103篇 |
眼科学 | 6篇 |
药学 | 36篇 |
中国医学 | 3篇 |
肿瘤学 | 191篇 |
出版年
2020年 | 11篇 |
2019年 | 13篇 |
2017年 | 15篇 |
2016年 | 22篇 |
2015年 | 30篇 |
2014年 | 35篇 |
2013年 | 82篇 |
2012年 | 31篇 |
2011年 | 37篇 |
2010年 | 63篇 |
2009年 | 68篇 |
2008年 | 34篇 |
2007年 | 48篇 |
2006年 | 36篇 |
2005年 | 54篇 |
2004年 | 35篇 |
2003年 | 32篇 |
2002年 | 35篇 |
2001年 | 40篇 |
2000年 | 21篇 |
1999年 | 31篇 |
1998年 | 86篇 |
1997年 | 75篇 |
1996年 | 77篇 |
1995年 | 50篇 |
1994年 | 63篇 |
1993年 | 51篇 |
1992年 | 17篇 |
1991年 | 24篇 |
1990年 | 23篇 |
1989年 | 43篇 |
1988年 | 45篇 |
1987年 | 32篇 |
1986年 | 26篇 |
1985年 | 28篇 |
1984年 | 23篇 |
1983年 | 12篇 |
1982年 | 21篇 |
1981年 | 19篇 |
1980年 | 13篇 |
1979年 | 19篇 |
1978年 | 14篇 |
1977年 | 16篇 |
1976年 | 18篇 |
1975年 | 15篇 |
1974年 | 8篇 |
1973年 | 18篇 |
1972年 | 10篇 |
1971年 | 11篇 |
1970年 | 10篇 |
排序方式: 共有1744条查询结果,搜索用时 15 毫秒
991.
JH Cross GD Jackson BG Neville A Connelly FJ Kirkham SG Boyd MC Pitt DG Gadian 《Archives of disease in childhood》1993,69(1):104-109
The incidence of brain abnormalities determined by magnetic resonance in 30 consecutive children presenting with intractable complex partial seizures is reported. Images were optimised to visualise the hippocampus and cortical grey matter. Abnormalities of the hippocampus or temporal lobe were seen in all 19 children with clinical features of temporal lobe epilepsy and in six of the seven children with clinically unlocalised epilepsy. By contrast, in the four children with a clinical diagnosis of extratemporal epilepsy, no temporal or hippocampal abnormalities were seen. Generalised cortical abnormalities of uncertain significance were found in a total of 14 children from all groups. The identification of focal brain abnormalities using optimised magnetic resonance imaging enables early non-invasive assessment of children with intractable seizure disorders and the identification of patients for whom epilepsy surgery may be appropriate. It may also lead to a better understanding of the structural basis of intractable epilepsy, and thereby contribute to early treatment decisions. 相似文献
992.
Hernández R del Cañizo MC López C González MI Vázquez ML Caballero MD San Miguel JF 《Medical oncology (Northwood, London, England)》2000,17(4):337-339
Pathological rupture of the spleen is a rare but well recognized complication in hematological malignancies. Early clinical
recognition of this life-threatening complication is necessary for rapid intervention. Here, we report on the case of a 26-year-old
woman with acute promyelocytic leukemia who presented rupture of the spleen on day +2 of treatment with ATRA plus idarrubicin.
In patients with acute leukemia, the presence of a painful abdomen and a sudden drop in hemoglobin levels, should alert of
a possible splenic rupture, even without additional symptoms. This would facilitate an early treatment intervention with no
modification to the chemotherapy schedule. 相似文献
993.
994.
995.
Recurrent occlusive disease was found by noninvasive methods and confirmed arteriographically in 7 patients who had undergone endarterectomy for stenosis of one [5] or both iliac arteries [1] or the subclavian artery [1]. Three patients with iliac artery stenosis had percutaneous transluminal angioplasty (PTA) 1 to 5 years after endarterectomy. One patient with stenosis of the external iliac artery had PTA 4 years after endarterectomy, and dilatation was repeated 7 months later because of recurrence. One patient had 2 endarterectomies and 2 PTAs within 8 years for stenosis of the right common iliac artery. One patient had recanalization of the left common iliac artery 6 years after endarterectomy with low-dose streptokinase followed by PTA. Another patient underwent endarterectomy of the left subclavian artery 3 months after PTA and required further dilatation at 5 and 10 months because of recurrence. The authors conclude that endarterectomy does not preclude PTA (or vice versa) in patients with recurrent arterial occlusive disease. 相似文献
996.
997.
The sonograms of 40 patients with second-trimester polyhydramnios were reviewed to determine (a) whether fetal and maternal conditions occur as often during second-trimester polyhydramnios as during third-trimester polyhydramnios, (b) the frequency of persistence of polyhydramnios into the third trimester, and (c) how sonography can help in maternal and fetal management. Second-trimester polyhydramnios often (62%) persisted into the third trimester. The frequencies of maternal (25%) and fetal (12%) conditions were similar to those previously reported for third-trimester polyhydramnios. Fetal anomalies were always identified on the sonogram that initially demonstrated polyhydramnios. Fetal outcome was excellent in the nondiabetic patient with polyhydramnios in whom no fetal abnormalities were detected on sonograms. In polyhydramnios associated with maternal diabetes mellitus, however, the pregnancy was often (71%) complicated by premature labor or macrosomia. In such patients serial sonographic follow-up is indicated. 相似文献
998.
999.
Kellum CD; Tegtmeyer CJ; Jenkins AD; Barr JD; Gillenwater JY; Wyker AW; Lippert MC 《Radiology》1987,165(2):431-438
Extracorporeal shock wave lithotripsy was used for the treatment of 1,252 kidneys and ureters with calculi during a 10-month period at the authors' medical center. Before lithotripsy was performed, excretory urography, radiography, renography, computed tomography, and ultrasound studies were done, when necessary, to locate the calculi. Nine calculi in five kidneys could not be fragmented with lithotripsy. Of 895 patients with calculi less than 2.5 cm in diameter, only 13 (1.5%) required interventional procedures to clear the calculi, whereas of 161 patients with calculi greater than or equal to 2.5 cm, 36 (22.4%) required nephrostomies. A column of calculous debris in the mid and distal portions of the ureter (steinstrasse) was seen in 171 instances (13.6%) after lithotripsy; 62% required interventions. The most common intervention required for successful lithotripsy was retrograde ureteral catheterization. Evaluation and treatment of patients with urolithiasis were largely dependent on radiography and excretory urography. 相似文献
1000.
Irish Journal of Medical Science (1971 -) - 相似文献