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排序方式: 共有147条查询结果,搜索用时 15 毫秒
1.
G Wilms G Marchal E Kersschot P Vanhoenacker P Demaerel H Bosmans H Carton A L Baert 《Journal of computer assisted tomography》1991,15(3):359-364
Axial and sagittal proton density and T2-weighted MR images (TR 2,500-3,000 ms, TE 15-22 and 85-90 ms) were performed in 50 patients with multiple sclerosis (MS) on a 1.5 T superconductive system. The number of plaques on the axial and sagittal images in the periventricular white matter, the corpus callosum, the brain stem, the cerebellum, and the basal ganglia were counted separately by two independent observers. A total of 858 lesions (mean 17.40 +/- 21.57) were seen on the axial series and 1,196 (mean 24.32 +/- 26.22) on the sagittal scans. More lesions were visualized on sagittal images in the periventricular region (mean 18.79 +/- 21.69 versus 13.34 +/- 16.45; p less than 0.001) and the corpus callosum (mean 3.00 +/- 2.72 versus 0.57 +/- 1.19; p less than 0.001). In the brain stem more lesions were visualized on the axial images (mean 1.55 +/- 2.55 versus 0.87 +/- 1.20; p less than 0.05). In the cerebellum and basal ganglia, scans in the two planes were equivalent (p greater than 0.5). In three patients lesions were seen on the sagittal series, while the axial scans were normal. Sagittal T2-weighted images appear to demonstrate significantly more MS plaques than transverse images, especially in the periventricular region and the corpus callosum. This is explained by partial volume averaging, by the orientation of some cerebral structures (e.g., corpus callosum) with regard to the section plane, and by the longer diameter of the lesions in the axial plane. 相似文献
2.
F.M. Vanhoenacker MD PhD B. Op de Beeck MD A.M. De Schepper MD PhD R. Salgado MD A. Snoeckx MD P.M. Parizel MD PhD 《Seminars in Ultrasound, CT and MRI》2007,28(1):35-51
A wide range of vascular disorders can affect the spleen. Although clinical presentation is often nonspecific, early diagnosis and treatment are mandatory in most conditions. Noninvasive imaging techniques are well suited to meet these objectives. Familiarity with normal macroscopic and microscopic vascular anatomy is a prerequisite to understand the pathophysiology of vascular disorders of the spleen. This article deals with diseases of the splenic vasculature (aneurysms, arteriovenous fistula, splenic vein thrombosis, collateral circulation in portal hypertension) as well as vascular disorders affecting the splenic parenchyma (splenic infarct, Gamna-Gandy bodies). Primary vascular tumors and tumor-like conditions of the spleen will be discussed very briefly. 相似文献
3.
Localisation of the gene causing diaphyseal dysplasia Camurati-Engelmann to chromosome 19q13 总被引:1,自引:0,他引:1 下载免费PDF全文
Janssens K Gershoni-Baruch R Van Hul E Brik R Guañabens N Migone N Verbruggen LA Ralston SH Bonduelle M Van Maldergem L Vanhoenacker F Van Hul W 《Journal of medical genetics》2000,37(4):245-249
Camurati-Engelmann disease, progressive diaphyseal dysplasia, or diaphyseal dysplasia Camurati-Engelmann is a rare, autosomal dominantly inherited bone disease, characterised by progressive cortical expansion and sclerosis mainly affecting the diaphyses of the long bones associated with cranial hyperostosis. The main clinical features are severe pain in the legs, muscular weakness, and a waddling gait. The underlying cause of this condition remains unknown.In order to localise the disease causing gene, we performed a linkage study in a large Jewish-Iraqi family with 18 affected subjects in four generations. A genome wide search with highly polymorphic markers showed linkage with several markers at chromosome 19q13. A maximum lod score of 4.9 (theta=0) was obtained with markers D19S425 (58.7 cM, 19q13.1) and D19S900 (67.1 cM, 19q13. 2). The disease causing gene is located in a candidate region of approximately 32 cM, flanked by markers D19S868 (55.9 cM, 19q13.1) and D19S571 (87.7 cM, 19q13.4). 相似文献
4.
Simon Nicolay Luc De Beuckeleer Daniël Stoffelen Filip Vanhoenacker Marc Pouillon 《Skeletal radiology》2014,43(5):699-702
We report an 89-year-old woman with bilateral atraumatic scapular spine fracture several months after bilateral reverse total shoulder arthroplasty (RTSA). Recently, RTSA has gained popularity in the surgical treatment of complex shoulder disorders such as cuff tear arthropathy. However, scapular fractures may occur several months after surgery as a late complication of this procedure. In this case report we focus on a relatively uncommon subtype, the scapular spine fracture. Although well-known in the orthopedic literature, radiologists are less familiar with this complication. To the best of our knowledge, bilateral scapular fractures have not yet been reported. 相似文献
5.
L. J. Ceulemans N. P. Deferm F. M. Vanhoenacker J. De Leersnyder 《Acta chirurgica Belgica》2013,113(5):376-378
Postoperative popliteal arteriovenous fistula is a very rare complication. We report a unique asymptomatic fistula in a 77-year-old male patient, seven months after total knee replacement. The diagnosis was suspected by a clinical palpable thrill and confirmed with a typical doppler ultrasound signaling. This vascular malformation was successfully treated by surgical resection of the fistula. Referring to the literature, considering the management of popliteal aneurysms, we suggest to prefer an open procedure in patients who are in good general condition. 相似文献
6.
Meschi Nastaran Vanhoenacker Anke Strijbos Olaf Camargo dos Santos Bernardo Rubbers Eléonore Peeters Valerie Curvers Frederik Van Mierlo Maarten Geukens Arne Fieuws Steffen Verbeken Eric Lambrechts Paul 《Clinical oral investigations》2020,24(12):4439-4453
Clinical Oral Investigations - The aim of this study was to assess in a multi-modular manner the bone healing 1 year post root-end surgery (RES) with leukocyte- and platelet-rich fibrin... 相似文献
7.
8.
Informed consent was obtained from all patients before participation; study was approved by institutional review board. Three-dimensional (3D) gradient-echo magnetic resonance sequences can be optimized for rapid acquisition through asymmetric k-space sampling and interpolation of image data. A T1-weighted volumetric interpolated brain examination sequence (acquisition time, 1 minute 24 seconds) was prospectively compared qualitatively and quantitatively with magnetization-prepared rapid acquisition gradient-echo sequence (acquisition time, 6 minutes 6 seconds) for venography of cerebral venous structures in 21 female and seven male consecutive patients (mean age, 52.9 years; range, 16-81 years). Although signal- and contrast-to-noise ratios were substantially lower for volumetric interpolated sequence, difference in the subjective quality of visualization of cerebral venous structures was not significant (P >.05). Volumetric interpolated brain examination seems promising as a more time-efficient alternative for 3D imaging of cerebral venous structures. 相似文献
9.
Vanhoenacker FM De Backer AI Op de BB Maes M Van Altena R Van Beckevoort D Kersemans P De Schepper AM 《European radiology》2004,14(Z3):E103-E115
This article discusses the range of manifestations of tuberculosis (TB) of the abdomen, including involvement of the gastrointestinal tract, the peritoneum, mesentery, omentum, abdominal lymph nodes, solid abdominal organs, the genital system and the abdominal aorta. Abdominal TB is a diagnostic challenge, particularly when pulmonary TB is absent. It may mimic many other abdominal diseases, both clinically and radiologically. An early correct diagnosis, however, is important in order to ensure proper treatment and a favorable outcome. Modern imaging is a cornerstone in the early diagnosis of abdominal TB and may prevent unnecessary morbidity and mortality. Generally, CT appears to be the imaging modality of choice in the detection and assessment of abdominal tuberculosis, other than gastrointestinal TB. Barium studies remain superior for demonstrating mucosal intestinal lesions. Ultrasound may be used for follow-up to monitor therapy response. The diagnosis of abdominal TB should be considered if suggestive imaging findings are found in patients with a high index of suspicion. 相似文献
10.
Wergedal JE Veskovic K Hellan M Nyght C Balemans W Libanati C Vanhoenacker FM Tan J Baylink DJ Van Hul W 《The Journal of clinical endocrinology and metabolism》2003,88(12):5778-5783
Van Buchem disease is an autosomal recessive disease characterized by overgrowth of the skeleton. In a group of Dutch patients the disease is thought to be due to a 52-kb deletion that results in decreased expression of the SOST gene. To further characterize the disease, the morphology of the metacarpals of six adult subjects and two juveniles with Van Buchem disease were measured on hand x-rays along with nine normal adults and nine adult carriers of the disease. Serum bone formation markers, alkaline phosphatase, type I procollagen peptide, and osteocalcin, and the urinary bone resorption marker, cross-linked N-telopeptide, were determined. Van Buchem patients had increased metacarpal outer diameter, inner diameter, cortical thickness, and bone mineral density. Calculated bone volume and derived polar moment of inertia were markedly elevated (elevations of 158 +/- 33% and 497 +/- 95%, respectively) consistent with increased bone strength. Serum procollagen peptide and osteocalcin were significantly higher in Van Buchem patients. Urinary cross-linked N-telopeptide was significantly elevated in Van Buchem patients. None of these changes was found in Van Buchem carriers. These observations indicate that decreased expression of the SOST gene can lead to increased bone formation and to stronger bones. 相似文献