The Experts below are selected from a list of 36564 Experts worldwide ranked by ideXlab platform
Norbert Boos - One of the best experts on this subject based on the ideXlab platform.
-
mr imaging of the lumbar spine prevalence of intervertebral disk extrusion and sequestration nerve root Compression End plate abnormalities and osteoarthritis of the facet joints in asymptomatic volunteers
Radiology, 1998Co-Authors: Dominik Weishaupt, Marco Zanetti, J Hodler, Norbert BoosAbstract:PURPOSE: To identify the magnetic resonance (MR) abnormalities of the lumbar spine that have a low prevalence in asymptomatic patients and thus determine the findings that are predictive of low back pain in symptomatic patients. MATERIALS AND METHODS: Sagittal T1-weighted and sagittal and axial T2-weighted MR images were obtained in 60 asymptomatic volunteers aged 20-50 years. The MR images were evaluated with regard to intervertebral disk abnormalities, End plate abnormalities, and osteoarthritis of the facet joints by two musculoskeletal radiologists indepEndently. RESULTS: Disk bulging or disk protrusion was found in 42 (14%) and 48 (16%) of the intervertebral spaces in 37 (62%) and 40 (67%) subjects, respectively. High-signal-intensity zones were found commonly (in 23 [7.7%] and 25 [8.3%] of the intervertebral spaces in 19 (32%) and 20 (33%) subjects, respectively). Disk extrusions were less common (in 11 [3.7%] and 11 [3.7%] of the intervertebral spaces in 11 (18%) and 11 (18%) subjects, respectively...
Dominik Weishaupt - One of the best experts on this subject based on the ideXlab platform.
-
mr imaging of the lumbar spine prevalence of intervertebral disk extrusion and sequestration nerve root Compression End plate abnormalities and osteoarthritis of the facet joints in asymptomatic volunteers
Radiology, 1998Co-Authors: Dominik Weishaupt, Marco Zanetti, J Hodler, Norbert BoosAbstract:PURPOSE: To identify the magnetic resonance (MR) abnormalities of the lumbar spine that have a low prevalence in asymptomatic patients and thus determine the findings that are predictive of low back pain in symptomatic patients. MATERIALS AND METHODS: Sagittal T1-weighted and sagittal and axial T2-weighted MR images were obtained in 60 asymptomatic volunteers aged 20-50 years. The MR images were evaluated with regard to intervertebral disk abnormalities, End plate abnormalities, and osteoarthritis of the facet joints by two musculoskeletal radiologists indepEndently. RESULTS: Disk bulging or disk protrusion was found in 42 (14%) and 48 (16%) of the intervertebral spaces in 37 (62%) and 40 (67%) subjects, respectively. High-signal-intensity zones were found commonly (in 23 [7.7%] and 25 [8.3%] of the intervertebral spaces in 19 (32%) and 20 (33%) subjects, respectively). Disk extrusions were less common (in 11 [3.7%] and 11 [3.7%] of the intervertebral spaces in 11 (18%) and 11 (18%) subjects, respectively...
J Hodler - One of the best experts on this subject based on the ideXlab platform.
-
mr imaging of the lumbar spine prevalence of intervertebral disk extrusion and sequestration nerve root Compression End plate abnormalities and osteoarthritis of the facet joints in asymptomatic volunteers
Radiology, 1998Co-Authors: Dominik Weishaupt, Marco Zanetti, J Hodler, Norbert BoosAbstract:PURPOSE: To identify the magnetic resonance (MR) abnormalities of the lumbar spine that have a low prevalence in asymptomatic patients and thus determine the findings that are predictive of low back pain in symptomatic patients. MATERIALS AND METHODS: Sagittal T1-weighted and sagittal and axial T2-weighted MR images were obtained in 60 asymptomatic volunteers aged 20-50 years. The MR images were evaluated with regard to intervertebral disk abnormalities, End plate abnormalities, and osteoarthritis of the facet joints by two musculoskeletal radiologists indepEndently. RESULTS: Disk bulging or disk protrusion was found in 42 (14%) and 48 (16%) of the intervertebral spaces in 37 (62%) and 40 (67%) subjects, respectively. High-signal-intensity zones were found commonly (in 23 [7.7%] and 25 [8.3%] of the intervertebral spaces in 19 (32%) and 20 (33%) subjects, respectively). Disk extrusions were less common (in 11 [3.7%] and 11 [3.7%] of the intervertebral spaces in 11 (18%) and 11 (18%) subjects, respectively...
Marco Zanetti - One of the best experts on this subject based on the ideXlab platform.
-
mr imaging of the lumbar spine prevalence of intervertebral disk extrusion and sequestration nerve root Compression End plate abnormalities and osteoarthritis of the facet joints in asymptomatic volunteers
Radiology, 1998Co-Authors: Dominik Weishaupt, Marco Zanetti, J Hodler, Norbert BoosAbstract:PURPOSE: To identify the magnetic resonance (MR) abnormalities of the lumbar spine that have a low prevalence in asymptomatic patients and thus determine the findings that are predictive of low back pain in symptomatic patients. MATERIALS AND METHODS: Sagittal T1-weighted and sagittal and axial T2-weighted MR images were obtained in 60 asymptomatic volunteers aged 20-50 years. The MR images were evaluated with regard to intervertebral disk abnormalities, End plate abnormalities, and osteoarthritis of the facet joints by two musculoskeletal radiologists indepEndently. RESULTS: Disk bulging or disk protrusion was found in 42 (14%) and 48 (16%) of the intervertebral spaces in 37 (62%) and 40 (67%) subjects, respectively. High-signal-intensity zones were found commonly (in 23 [7.7%] and 25 [8.3%] of the intervertebral spaces in 19 (32%) and 20 (33%) subjects, respectively). Disk extrusions were less common (in 11 [3.7%] and 11 [3.7%] of the intervertebral spaces in 11 (18%) and 11 (18%) subjects, respectively...
P W Serruys - One of the best experts on this subject based on the ideXlab platform.
-
decreased coronary flow reserve in hypertrophic cardiomyopathy is related to remodeling of the coronary microcirculation
Circulation, 1998Co-Authors: Rob Krams, Stéphane G. Carlier, Marcel J M Kofflard, Dirk J Duncker, C Von Birgelen, Mike Kliffen, F Ten J Cate, P W SerruysAbstract:Background—Ischemia occurs frequently in hypertrophic cardiomyopathy (HCM) without evidence of epicardial stenosis. This study evaluates the hypothesis that the occurrence of ischemia in HCM is related to remodeling of the coronary microcirculation. Methods and Results—End-diastolic septal wall thickness was significantly increased in patients with HCM (25.8±2.9 mm) in comparison with cardiac transplant recipients (control subjects: 11.4±3.0 mm; P<0.05). Although the diameter of the left anterior descEnding coronary artery was similar in both groups (3.0±0.8 versus 3.0±0.5 mm, P=NS), the coronary resistance reserve (CRR=CRRbasal/CRRhyperemic), corrected for extravascular Compression (End-diastolic left ventricular pressure), was reduced to 1.5±0.6 in HCM (P<.05; control, 2.6±0.8). Arteriolar lumen (AL) divided by wall area was lower in HCM (21±5% versus 30±4%; P<.05), and capillary density tEnded to decrease (from 1824±424 to 1445±513 per mm2, P=.11) in HCM. CRR was linearly related to normalized AL accor...