The Experts below are selected from a list of 1026 Experts worldwide ranked by ideXlab platform
O Jansen - One of the best experts on this subject based on the ideXlab platform.
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reversibility of venous sinus obstruction in idiopathic intracranial hypertension
American Journal of Neuroradiology, 2007Co-Authors: A Rohr, Lutz Dorner, Robert Stingele, R Buhl, K Alfke, O JansenAbstract:SUMMARY: Elevated intracranial intravenous pressure seems to be of importance in pseudotumor cerebri syndromes, either as a cause (secondary intracranial hypertension) or as a consequence (idiopathic intracranial hypertension) of increased intracranial pressure. We present 3 case reports in which diagnostic imaging before and after CSF diversion provided evidence that narrowing of the Transverse Sinuses is a secondary phenomenon. Stent angioplasty of the venous Sinuses should not be considered a therapeutic approach in these cases.
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more reliable noninvasive visualization of the cerebral veins and dural Sinuses comparison of three mr angiographic techniques
Radiology, 2002Co-Authors: K Kirchhof, O Jansen, Thomas Welzel, Klaus SartorAbstract:PURPOSE: To compare the visualization of cerebral veins and dural Sinuses at contrast material-enhanced three-dimensional (3D) fast low-angle shot (FLASH) magnetic resonance (MR) angiography, time-of-flight (TOF) MR angiography, and phase-contrast MR angiography. MATERIALS AND METHODS: The authors prospectively compared the two-dimensional source images, multiplanar reconstructed images, and maximum intensity projection angiograms obtained at contrast-enhanced 3D radio-frequency-spoiled FLASH MR angiography in 20 patients with those obtained at TOF and phase-contrast MR angiographic examinations. Two neuroradiologists in consensus determined the number of visualized cortical veins and graded the quality of visualization of veins and Sinuses as intense and continuous, faint and continuous, or noncontinuous. Statistical analysis was performed with the nonparametric sign test and the Wilcoxon matched pairs sign rank test. RESULTS: The cortical veins, inferior sagittal sinus, and cavernous Sinuses were visualized best with FLASH MR angiography (P <.003). The Trolard and Labbe veins were visualized equally well with the FLASH and TOF sequences. For septal, internal cerebral, and Rosenthal left basal vein visualization, phase-contrast MR angiography was inferior to the FLASH and TOF MR angiographic examinations (P <.05). The quality of visualization of the thalamostriate and Galen veins and of the superior sagittal, rectal, and Transverse Sinuses was the same at all MR angiographic examinations. CONCLUSION: Three-dimensional FLASH MR angiography depicts some venous structures better than do TOF and phase-contrast MR angiographic examinations. The depiction of other veins is the same with 3D FLASH and TOF sequences.
F. Bono - One of the best experts on this subject based on the ideXlab platform.
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The upper limit of normal CSF opening pressure is related to bilateral Transverse sinus stenosis in headache sufferers
Cephalalgia, 2009Co-Authors: F. Bono, D Salvino, Dario Cristiano, Francesco Fera, C. Mastrandrea, Angelo Lavano, V Latorre, S D'asero, Aldo QuattroneAbstract:There are limited data on the relationship between normal cerebrospinal fluid (CSF) opening pressure and bilateral Transverse sinus stenosis (BTSS); there are also several conflicting reports about the upper limit of normal CSF opening pressure. To evaluate the influence of BTSS on the upper limit of normal CSF opening pressure, we prospectively recorded lumbar CSF opening pressures in 217 adult patients with neurological symptoms who underwent cerebral magnetic resonance venography (MRV). The CSF opening pressures ranged between 65 and 286 mmH2O (mean = 149.3, s.d. = 47.5). The upper limit of opening pressure in patients with both normal appearance of Transverse Sinuses and unilateral Transverse sinus stenosis on MRV (n = 167) was 195 mmH2O with a range of 65–195 mmH2O. All patients with BTSS were headache sufferers, and the upper limit of opening pressure in patients with BTSS (n = 50) was 286 mmH2O with a range of 91–286 mmH2O. All patients with opening pressures > 200 mmH2O displayed BTSS, whereas onl...
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Cerebral MR venography of Transverse Sinuses in subjects with normal CSF pressure.
Neurology, 2003Co-Authors: F. Bono, Francesco Fera, Angelo Lavano, M. R. Lupo, L. Mangone, K. Pardatscher, Andrea QuattroneAbstract:Flow artifacts or anatomic variants of venous Sinuses often make MR venography (MRV) interpretation difficult. The authors investigated cerebral MRV in 111 subjects with normal CSF pressure to identify the most common flow abnormalities of Transverse Sinuses (TS). Disturbance of venous outflow in one Transverse sinus was commonly observed in 30% of subjects whereas flow abnormalities of both TS occurred in 2 of 111 individuals. Subjects with flow gaps in both TS should undergo lumbar puncture to exclude increased CSF pressure.
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cerebral venous thrombosis and isolated intracranial hypertension without papilledema in cdh
Neurology, 2001Co-Authors: Andrea Quattrone, F. Bono, R L Oliveri, Antonio Gambardella, D Pirritano, Angelo Labate, A Lucisano, Paola Valentino, Mario Zappia, Umberto AgugliaAbstract:Background: There is evidence that patients with chronic daily headache (CDH) may have isolated intracranial hypertension without papilledema (IHWOP). Recent studies have emphasized that isolated IH may be due to cerebral venous thrombosis (CVT). Objective: To detect the occurrence of CVT in patients with CDH. Methods: The authors investigated the occurrence of CVT in 114 consecutive patients with CDH by using MR venography (MRV). A portion of these patients underwent a lumbar puncture (LP) to measure CSF pressure. MRV and LP were also performed in 28 age-matched control subjects. Results: In all the control subjects, both MRV and CSF pressure were normal. One hundred three of the 114 patients with CDH had normal MRV. Twenty-seven (Group 1) of these 103 patients underwent LP, and all of them had normal CSF pressure. Eleven (9.6%) of the 114 patients with CDH had CVT of one or both Transverse Sinuses. Six of these 11 patients had flowing abnormalities of one Transverse sinus (Group 2), whereas the remaining five patients showed involvement of both Transverse Sinuses (Group 3). The CSF pressure of Group 2 was higher than that of either Group 1 or the control subjects, and one of the six patients showed isolated IHWOP. Patients of Group 3 displayed the highest CSF pressure, and four of five had isolated IHWOP. The headache profiles of patients with CDH and CVT did not differ from those of patients with CDH but normal MRV. Conclusions: CVT, as detected by MRV, occurred in 9.6% of patients who presented with CDH. Almost half of the patients with CVT had isolated IHWOP. These results suggest that MRV may be a useful tool for selecting patients with CDH who should have LP to exclude isolated IHWOP.
Mehmet Ali Sungur - One of the best experts on this subject based on the ideXlab platform.
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behcet s disease as a causative factor of cerebral venous sinus thrombosis subgroup analysis of data from the venost study
Rheumatology, 2019Co-Authors: Derya Uluduz, Ipek Midi, Taskin Duman, Sena Colakoglu, Ahmet Tufekci, Mustafa Bakar, Bijen Nazliel, Nida Tascilar, Baki Goksan, Mehmet Ali SungurAbstract:OBJECTIVE This study was performed to determine the rate of cerebral venous sinus thrombosis (CVST) among cases of Behcet's disease (BD) included in a multicentre study of cerebral venous sinus thrombosis (VENOST). METHODS VENOST was a retrospective and prospective national multicentre observational study that included 1144 patients with CVST. The patients were classified according to aetiologic factors, time of CVST symptom onset, sinus involvement, treatment approach and prognosis. RESULTS BD was shown to be a causative factor of CVST in 108 (9.4%) of 1144 patients. The mean age of patients in the BD group was 35.27 years and 68.5% were men, whereas in the non-BD CVST group, the mean age was 40.57 years and 28.3% were men (P < 0.001). Among the aetiologic factors for patients aged 18-36 years, BD was predominant for men, and puerperium was predominant for women. The onset of symptoms in the BD group was consistent with the subacute form. The Transverse Sinuses were the most common sites of thrombosis, followed by the superior sagittal Sinuses. The most common symptom was headache (96.2%), followed by visual field defects (38%). CONCLUSIONS BD was found in 9.4% of patients in our VENOST series. Patients with BD were younger and showed a male predominance. The functional outcome of CVST in patients with BD was good; only 12% of patients presenting with cranial nerve involvement and altered consciousness at the beginning had a poor outcome (modified Rankin Score ⩾2).
B M Tress - One of the best experts on this subject based on the ideXlab platform.
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manometry combined with cervical puncture in idiopathic intracranial hypertension
Neurology, 2002Co-Authors: John King, Peter Mitchell, K R Thomson, B M TressAbstract:Objective: To determine by cerebral venography and manometry in patients with idiopathic intracranial hypertension the cause of the previously demonstrated venous hypertension in the superior sagittal and proximal Transverse Sinuses. Methods: Cerebral venous sinus pressure was measured before and immediately after C1-2 puncture with removal of 20 to 25 mL of CSF. Results: Lowering the intracranial pressure by lateral C1-2 puncture during manometry has shown that the venous hypertension resolves immediately. Conclusion: These studies indicate that the venous hypertension is due to compression of the Transverse Sinuses by raised intracranial pressure and not due to a primary obstructive process in the cerebral venous Sinuses.
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cerebral venography and manometry in idiopathic intracranial hypertension
Neurology, 1995Co-Authors: John King, Peter Mitchell, K R Thomson, B M TressAbstract:Cerebral venography and manometry in nine patients with idiopathic intracranial hypertension consistently showed venous hypertension in the superior sagittal sinus and proximal Transverse Sinuses, with a significant drop in venous pressure at the level of the lateral third of the Transverse sinus.The abnormality, clearly demonstrated by manometry, was not well shown on the venous phase of cerebral angiography. The appearance of the Transverse sinus on venography varied from smooth tapered narrowing to discrete intraluminal filling defects that resembled mural thrombi. Two patients with intracranial hypertension due to minocycline did not show venous hypertension. NEUROLOGY 1995;45: 2224-2228
Andrea Quattrone - One of the best experts on this subject based on the ideXlab platform.
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Cerebral MR venography of Transverse Sinuses in subjects with normal CSF pressure.
Neurology, 2003Co-Authors: F. Bono, Francesco Fera, Angelo Lavano, M. R. Lupo, L. Mangone, K. Pardatscher, Andrea QuattroneAbstract:Flow artifacts or anatomic variants of venous Sinuses often make MR venography (MRV) interpretation difficult. The authors investigated cerebral MRV in 111 subjects with normal CSF pressure to identify the most common flow abnormalities of Transverse Sinuses (TS). Disturbance of venous outflow in one Transverse sinus was commonly observed in 30% of subjects whereas flow abnormalities of both TS occurred in 2 of 111 individuals. Subjects with flow gaps in both TS should undergo lumbar puncture to exclude increased CSF pressure.
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cerebral venous thrombosis and isolated intracranial hypertension without papilledema in cdh
Neurology, 2001Co-Authors: Andrea Quattrone, F. Bono, R L Oliveri, Antonio Gambardella, D Pirritano, Angelo Labate, A Lucisano, Paola Valentino, Mario Zappia, Umberto AgugliaAbstract:Background: There is evidence that patients with chronic daily headache (CDH) may have isolated intracranial hypertension without papilledema (IHWOP). Recent studies have emphasized that isolated IH may be due to cerebral venous thrombosis (CVT). Objective: To detect the occurrence of CVT in patients with CDH. Methods: The authors investigated the occurrence of CVT in 114 consecutive patients with CDH by using MR venography (MRV). A portion of these patients underwent a lumbar puncture (LP) to measure CSF pressure. MRV and LP were also performed in 28 age-matched control subjects. Results: In all the control subjects, both MRV and CSF pressure were normal. One hundred three of the 114 patients with CDH had normal MRV. Twenty-seven (Group 1) of these 103 patients underwent LP, and all of them had normal CSF pressure. Eleven (9.6%) of the 114 patients with CDH had CVT of one or both Transverse Sinuses. Six of these 11 patients had flowing abnormalities of one Transverse sinus (Group 2), whereas the remaining five patients showed involvement of both Transverse Sinuses (Group 3). The CSF pressure of Group 2 was higher than that of either Group 1 or the control subjects, and one of the six patients showed isolated IHWOP. Patients of Group 3 displayed the highest CSF pressure, and four of five had isolated IHWOP. The headache profiles of patients with CDH and CVT did not differ from those of patients with CDH but normal MRV. Conclusions: CVT, as detected by MRV, occurred in 9.6% of patients who presented with CDH. Almost half of the patients with CVT had isolated IHWOP. These results suggest that MRV may be a useful tool for selecting patients with CDH who should have LP to exclude isolated IHWOP.
