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991.
急性心肌梗塞患者血清唾液酸含量测定 总被引:2,自引:0,他引:2
本文测定了50例正常人,32例急性心肌梗塞,54例冠心病无梗塞者血清SA水平,结果表明,急性心肌梗塞组血清SA水平与冠心病无梗塞组及正常人相比,具显著性差异,可能与心肌梗塞造成心肌细胞受损所致使细胞表面成份释放入血有关,所以血清SA测定可提供一新的心肌梗塞诊断依据。 相似文献
992.
Travis L. Boaz Jonathan S. Lewin Yiu-Cho Chung Jeffrey L. Duerk Mark E. Clampitt John R. Haaga 《Journal of magnetic resonance imaging : JMRI》1998,8(1):64-69
The purpose of this study was to determine the suitability of MRI to accurately detect radiofrequency (RF) thermoablative lesions created under MR guidance. In vivo RF lesions were created in the livers of six New Zealand White rabbits using a 2-mm-diameter titanium alloy RF electrode with a 20-mm exposed tip and a 50-W RF generator. This was performed using a 0.2T clinical C-arm MR imager for guidance and monitoring. Each animal was sacrificed and gross evaluation was performed. Histologic correlation was performed on the first two animals. The MR-compatible RF electrode was easily identified on rapid gradient-echo images used to guide electrode placement. A single lesion was created in each rabbit liver. Lesions ranged from approximately 10 to 17 mm in diameter (mean, 13.5 mm). T2-weighted and short T1 inversion recovery (STIR) images demonstrated lesions ranging in diameter from 12 to 18 mm (mean, 14.6 mm). Lesion dimensions determined from images closely correlated with those determined at gross examination with the discrepancy never exceeding 2 mm, for an r2 value of .87. MRI performed at the time of MR-guided RF ablation accurately demonstrated created lesions. This modality may provide a new option for the treatment of local and regional neoplastic disease. 相似文献
993.
D. G. Kim C.-Y. Kim S. H. Paek D. S. Lee J.-K. Chung H.-W. Jung B.-K. Cho 《Acta neurochirurgica》1998,140(7):665-674
Summary
Background To determine its roles in the diagnosis and the systemic evaluation of metastatic brain tumours, whole-body positron emission
tomography (PET) using [18F]FDG was performed in 20 consecutive patients.
Methods
All patients were thought to be suffering or needing to be differentiated from metastatic brain tumours. Nine patients had
multiple brain lesions; six were older and showed a rim-enhancing lesion with surrounding oedema; seven had homogeneously
enhancing periventricular lesion(s) on computed tomography (CT) and/or magnetic resonance (MR) imaging, thought to be central
nervous system lymphomas. Two patients had skull mass(es) and two patients had a solid mass suspected to be, respectively,
a haemorrhagic metastasis and a metastatic malignant melanoma. All of them received whole-body [18F]FDG PET and conventional systemic work-up for metastasis in order to compare the results of the two methods.
Results
Metastatic brain tumours were diagnosed on whole-body [18F]FDG PET in eleven patients who had extracranial and intracranial hypermetabolic lesions. In nine of these, a conventional
work-up also detected primary lesions which on whole-body [18F]FDG PET were seen to be hypermetabolic foci. Systemic lymph node metastases were detected by whole-body [18F]FDG PET only in two patients and histological diagnosis was possible by biopsy of lymph nodes rather than of brain lesions.
In the remaining nine patients who had only intracranial hypermetabolic foci, histological diagnosis was made by craniotomy
or stereotactic biopsy. It was confirmed that seven of nine patients were suffering from a primary brain tumour and two from
metastatic carcinoma. None of the nine showed evidence of systemic cancer on conventional work-up. Histological diagnoses
of the primary brain tumours were four cases of primary central nervous system lymphoma and one each of multifocal glioblastoma,
Ewing's sarcoma, and cavernous angioma.
Patients felt no discomfort during the whole-body [18F]FDG PET procedure and there were no complications. The false negative rate in [18F]FDG PET and in conventional work-up was 15.4% and 30.7% respectively. There were no false positives on either [18F]FDG PET or conventional work-up.
Conclusion
It is suggested that whole-body [18F]FDG PET is a safe, reliable, and convenient method for the diagnosis and systemic evaluation of patients thought to be suffering
or needing to be differentiated from a metastatic brain tumour. 相似文献
994.
抑郁症的基础与认知激活脑SPECT显像 总被引:17,自引:6,他引:11
目的通过抑郁症患者基础和认知激活局部脑血流(rCBF)灌注显像的半定量分析,评估抑郁症患者的脑血流灌注异常。方法选择27例未经抗抑郁治疗、ICD10分类为中度抑郁发作伴躯体症状的患者,15例年龄匹配的健康人作正常对照。27例患者中21例、15例健康人中13例行双日法基础与认知激活脑rCBF显像;另6例患者及2例健康人仅行基础脑SPECT显像。认知激活采用Wisconsin卡片分类试验。半定量分析在横断面图像7~11帧上进行,将各ROI的平均计数与同侧小脑的最高计数相除,得到各ROI的rCBF比值。结果抑郁症左额叶和左颞叶的基础rCBF值均为0720,明显低于对照组(0764和0750,P<005);左额、左颞、左顶叶的认知激活rCBF值分别为0719、0690及0701,明显低于对照组(0782、0752和0766,P<001和P<005)。结论①抑郁症患者存在左额叶、左颞叶的局部血流低灌注。②额叶、颞叶皮层低灌注可能是引起抑郁症认知障碍、心境低落的原因。③Wisconsin卡片分类试验认知激活脑SPECT显像有助于提高抑郁症的诊断准确性 相似文献
995.
上海市外来人员肺结核病分布与临床特征 总被引:9,自引:3,他引:6
目的:了解上海市外来人口中肺结核病人的分布和临床特征。方法:对1996年1~12月全市外来人口活动性肺结核病报告登记资料进行分析。结果:外来人员肺结核病人总数达2279人,青壮年占总病例65%以上;男性病例为主;主要来源于江苏、浙江、安徽、四川、江西等省;登记病人来沪暂居地主要集中在市区及城乡地区,外来人口结核病管理重点在市区及城乡地区。病人分型以Ⅲ型为主。查痰率仅60.1%,但排菌率高达40%。外来人。的病例发现工作及治疗管理难度较大,目前登记病例规则化疗仅占10.4%。结论:有必要通过有关部门的共同协作,拟定切实可行的外来人口结核病管理办法。 相似文献
996.
江苏省肾综合征出血热单价灭活疫苗中期免疫效果观察 总被引:5,自引:2,他引:3
观察HFRS单价灭活疫苗中期免疫效果。方法:采用IFAT法及MCPENT法检测荧光抗体及中和抗体。结果:3个试区加强接种人数分别为4052、4407和6354人。加强后,Ⅰ型苗荧光抗体阳性率为72.73%,GMT为14.14;中和抗体阳性率为54.55%,GMT为6.67。D型苗荧光抗体阳性率为75.00%,GMT为11.85;中和抗体阳性率为60%,GMT为9.44。加强后1年,Ⅰ型苗年均保护率为65.52%,Ⅱ型苗则为94.24%。同期,Ⅰ型苗荧光抗体阳性率维持在40%,中和抗体维持在35.00%;Ⅱ型苗荧光抗体阳性率降至10.34%,中和抗体维持在53.85%。结论:两型疫苗均有较好的中期防病效果。 相似文献
997.
临床检验方舱(以下称临检方舱)是用以满足随行机动部队救治保障要求的机动单元。它既可独立执行临检任务,也可配属其他舱室完成相应卫勤保障任务。是“野战机动医疗系统”的重要模块之一。其检验功能设置包括临床常规检验、临床生化检验、常见病原菌检验与鉴定、血型鉴定与交叉配血试验等医学检验科的基本内容。本文从技术可行性、可靠性及人机工效性等方面对临检方舱方案进行了分析。 相似文献
998.
采用不同的血液动力学方法,对犬网膜下腔出血后引起的症状性脑血管痉挛进行治疗,我们发现:(1)等容称释加胞二磷胆碱和多巴酚丁胺疗法与人工扩容疗法疗效相同,但与等容稀释加胞二磷胆碱疗法相比,疗效有显著性差异,前者尤其知于扩容稀释禁忌证的病人;(2)稀释剂中加入胞二磷胆碱,可使红细胞变形能力半加,改善脑微循环(3)大剂量应用多巴胺升压,部分病例可使CVS加重,临床应慎用。 相似文献
999.
本文复习20例出血坏死性上颌窦炎的CT表现,笔者认为特征性CT表现为:上颌窦与鼻腔内软组织肿块;窦腔的不均等性膨胀扩大;窦壁骨质吸收或破坏,此外,对出血坏死性上颌窦炎同上颌窦癌的CT鉴别作了讨论 相似文献
1000.
F-J Tsai C-H Tsai S-F Wu Y-H Liu T-F Yeh 《Acta paediatrica (Oslo, Norway : 1992)》1996,85(12):1487-1490
To evaluate the catabolic effects of dexamethasone therapy on protein metabolism, amino acid concentrations and urinary 3-methylhistidine (3MH) were measured in 28 premature infants who were included in a double-blind controlled study using early dexamethasone therapy in the prevention of bronchopulmonary dysplasia. Fifteen infants received dexamethasone (0.5mg/kg/day i.v.) and 13 infants received normal saline as control. Heparinized venous blood samples for amino acid analysis were obtained before the study and again at day 5 after starting the study. Urinary 3MH was measured on days 1, 3, 5, 7, 14, 21, and 28 of treatment. A substantial increase in amino acid concentrations was observed in infants receiving dexamethasone. Alanine, glutamine, citrulline, ornithine and cystine concentrations increased twofold or more. The 3MH:creatinine ratio was increased in the treated group. These metabolic effects were most likely due to an increase in protein catabolism. 相似文献