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31.
32.
Wang WS; Hsieh RK; Chiou TJ; Liu JH; Fan FS; Yen CC; Tung SL; Chen PM 《Japanese journal of clinical oncology》1998,28(9):551-554
A 54-year-old man was treated with weekly 24-h infusion of high-dose
5-fluorouracil (2600 mg/m2) and leucovorin (100 mg/m2) for metastatic colon
cancer. At first, he tolerated the treatment well and no significant
toxicity was identified. After a total of eight courses of treatment, a
stable disease was observed, but mild shortness of breath was found on
occasion. The patient had no previous history of cardiac disease and the
heart performance assessed by left ventricular ejection fraction before
treatment was normal. Unfortunately, acute pulmonary edema with lethal
cardiogenic shock occurred during the ninth course of treatment, in spite
of intensive medical treatment. The chest X-ray showed extreme
cardiomegaly. Repeated assessment of his heart function by echocardiogram
and ventricular ejection fraction revealed a very poor cardiac performance.
Toxic cardiogenic shock during weekly 24-h infusion of high-dose
5-fluorouracil and leucovorin is extremely rare. To the best of our
knowledge, no case has been reported in the English literature. We report a
case and the relevant literature about the incidence, clinical picture and
possible pathophysiology on 5-fluorouracil-related cardioxicity is
reviewed.
相似文献
33.
Tentorial Meningiomas. Report on Twenty-Seven Cases 总被引:14,自引:0,他引:14
Summary ? Objective. Report our experience with 27 tentorial meningiomas (TM) surgically treated between 1985 and 1998.
Methods. The records of 27 patients with TMs were retrospectively reviewed for clinical presentation, neuroradiological evaluation,
surgical treatment and long-term outcome. The extent of tumor resection was scored according to the Simpson's grading for
tumor removal. Long-term results were evaluated according to the Glasgow Outcome Score (GOS).
Results. The average age was 53 years. Female predominance was 74%. The most common complaints at presentation were headaches (51%),
gait ataxia (33%), memory disturbances (30%) and hypo-acousia (30%). A classification of TMs into 5 subgroups according to
tumor site is proposed on the basis of imaging studies. A cerebrospinal fluid shunt was established prior to direct approach
in 7 patients and as the sole procedure in one inoperable patient. Twenty-seven direct approaches were undertaken in 26 patients,
including 17 infratentorial and 10 supratentorial approaches. Total tumor removal was achieved in 20 patients (77%) and subtotal
removal in 6 (23%). Fifteen patients (55%) experienced 22 postoperative complications. One patient died three months after
a subtotal resection (mortality=3,7%). With a mean follow-up of 54 months, all 26 survivors are currently alive with 23 having
resumed their normal activities and 3 needing assistance. Five of 6 patients with subtotal resection survived and were followed
for a period ranging from 72 to 132 months: none showed residual tumor progression and no re-operation was considered. An
additional patient experienced a ?true? recurrence 6 years after total removal, with no tumor progression 2 years after his
recurrence was recognized.
Discussion. The best surgical approach to TMs is still a controversial matter. The advantages and drawbacks of conventional versus transbasal
approaches are reviewed. Our experience suggests that subtotal removal can be associated with long recurrence-free intervals
and preserved quality of life. TMs located at the tentorial edge carried a definitely worse prognosis than peripheral forms. 相似文献
34.
35.
36.
Dynamic enhancement of upper abdominal organs in normal volunteers with MRI and effects of contrast dose reduction 总被引:3,自引:0,他引:3
Background: To quantify enhancement parameters of the upper abdominal organs over time during magnetic resonance (MR) examinations and
to evaluate the effect of a dose reduction of contrast medium on these parameters.
Methods: Ten volunteers underwent two separate dynamic enhanced MR examinations with 0.1 and 0.075 mmol/kg of contrast medium, respectively.
Breath-hold gradient-echo T1-weighted images were acquired every second for 118 s followed by delayed images. The percentages
of enhancement, the time to maximum enhancement, and the area under the time-versus-enhancement curve were calculated for
each organ.
Results: The mean times to maximum percentage of enhancement were less than 25 s for the pancreas, kidneys, and spleen and 50 s for
the liver. The mean values of maximum percentage of enhancement for the standard/reduced doses were 72%/62% (pancreas), 165%/155%
(kidneys), 114%/87% (spleen), and 67%/53% (liver). This difference was significant when liver enhancement was considered (p= 0.02). In addition, when the areas under the time-versus-enhancement curves were compared, the difference between the standard
dose and reduced dose was significant for all organs tested (p < 0.05).
Conclusions: Dynamic scanning of the upper abdomen should start early after contrast injection. Injection parameters should be standardized
to capture arterial and venous enhancements in liver examinations. A 25% dose reduction did not significantly affect peak
enhancement (except for the liver) but did significantly reduce overall enhancement.
Received: 8 September 1998/Revision accepted: 13 January 1999 相似文献
37.
Kenneth Wengler Brandon K. Ashinoff Elena Pueraro Clifford M. Cassidy Guillermo Horga Bret R. Rutherford 《Neuropsychopharmacology》2021,46(7):1233
Late-life depression (LLD) is a prevalent and disabling condition in older adults that is often accompanied by slowed processing and gait speed. These symptoms are related to impaired dopamine function and sometimes remedied by levodopa (L-DOPA). In this study, we recruited 33 older adults with LLD to determine the association between a proxy measure of dopamine function—neuromelanin-sensitive magnetic resonance imaging (NM-MRI)—and baseline slowing measured by the Digit Symbol test and a gait speed paradigm. In secondary analyses, we also assessed the ability of NM-MRI to predict L-DOPA treatment response in a subset of these patients (N = 15) who received 3 weeks of L-DOPA. We scanned a further subset of these patients (N = 6) with NM-MRI at baseline and after treatment to preliminarily evaluate the effects of L-DOPA treatment on the NM-MRI signal. We found that lower baseline NM-MRI correlated with slower baseline gait speed (346 of 1807 substantia nigra–ventral tegmental area (SN-VTA) voxels, Pcorrected = 0.038), particularly in the more medial, anterior, and dorsal SN-VTA. Secondary analyses failed to show an association between baseline NM-MRI and treatment-related changes in gait speed, processing speed, or depression severity (all Pcorrected > 0.361); we however found preliminary evidence of increases in the NM-MRI signal 3 weeks post-treatment with L-DOPA compared to baseline (200 of 1807 SN-VTA voxels; Pcorrected = 0.046), although the small sample size of these preliminary analyses warrants caution in their interpretation and future replications. Overall, our findings indicate that NM-MRI is sensitive to variability in gait speed in patients with LLD, suggesting this non-invasive MRI measure may provide a promising marker for dopamine-related psychomotor slowing in geriatric neuropsychiatry.Subject terms: Cognitive neuroscience, Depression, Biomarkers 相似文献
38.
39.
40.
Obesity, regional body fat distribution, and the metabolic syndrome in older men and women 总被引:1,自引:0,他引:1
Goodpaster BH Krishnaswami S Harris TB Katsiaras A Kritchevsky SB Simonsick EM Nevitt M Holvoet P Newman AB 《Archives of internal medicine》2005,165(7):777-783
BACKGROUND: The metabolic syndrome is a disorder that includes dyslipidemia, insulin resistance, and hypertension and is associated with an increased risk of diabetes and cardiovascular disease. We determined whether patterns of regional fat deposition are associated with metabolic syndrome in older adults. METHODS: A cross-sectional study was performed that included a random, population-based, volunteer sample of Medicare-eligible adults within the general communities of Pittsburgh, Pa, and Memphis, Tenn. The subjects consisted of 3035 men and women aged 70 to 79 years, of whom 41.7% were black. Metabolic syndrome was defined by Adult Treatment Panel III criteria, including serum triglyceride level, high-density lipoprotein cholesterol level, glucose level, blood pressure, and waist circumference. Visceral, subcutaneous abdominal, intermuscular, and subcutaneous thigh adipose tissue was measured by computed tomography. RESULTS: Visceral adipose tissue was associated with the metabolic syndrome in men who were of normal weight (odds ratio, 95% confidence interval: 2.1, 1.6-2.9), overweight (1.8, 1.5-2.1), and obese (1.2, 1.0-1.5), and in women who were of normal weight (3.3, 2.4-4.6), overweight (2.4, 2.0-3.0), and obese (1.7, 1.4-2.1), adjusting for race. Subcutaneous abdominal adipose tissue was associated with the metabolic syndrome only in normal-weight men (1.3, 1.1-1.7). Intermuscular adipose tissue was associated with the metabolic syndrome in normal-weight (2.3, 1.6-3.5) and overweight (1.2, 1.1-1.4) men. In contrast, subcutaneous thigh adipose tissue was inversely associated with the metabolic syndrome in obese men (0.9, 0.8-1.0) and women (0.9, 0.9-1.0). CONCLUSION: In addition to general obesity, the distribution of body fat is independently associated with the metabolic syndrome in older men and women, particularly among those of normal body weight. 相似文献