The Experts below are selected from a list of 3186 Experts worldwide ranked by ideXlab platform
F Quehenberger - One of the best experts on this subject based on the ideXlab platform.
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Sonography of acute cholecystitis: comparison of color and power Doppler sonography in detecting a hypervascularized Gallbladder Wall.
American Journal of Roentgenology, 1997Co-Authors: Martin M. Uggowitzer, C Kugler, G Schramayer, F Kammerhuber, R Gröll, Klaus A. Hausegger, Manfred Ratschek, F QuehenbergerAbstract:We evaluated the sensitivity and specificity of power Doppler sonography compared with conventional color Doppler sonography and gray-scale sonography in diagnosing patients with acute cholecystitis.Seventy-six patients with right upper quadrant pain and 72 healthy volunteers underwent gray-scale sonography, conventional color Doppler sonography, and power Doppler sonography of the Gallbladder. The vascularity of the Gallbladder Wall was scored on a scale of 0 to +3. Histology revealed acute cholecystitis in 55 patients. Histologic specimens and clinical workups showed that the remaining 21 patients suffered from other diseases.Sensitive sonographic features such as the positive Murphy's sign (in 96% of patients with acute cholecystitis), calculi (95%), and a thickened Gallbladder Wall (73%) lacked specificity (71%, 38%, 67%, respectively) for diagnosing acute cholecystitis. In our study, the sensitivity of power Doppler sonography was 95% compared with 33% for color Doppler sonography in revealing a hype...
R Rymer - One of the best experts on this subject based on the ideXlab platform.
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color velocity imaging and power doppler sonography of the Gallbladder Wall a new look at sonographic diagnosis of acute cholecystitis
American Journal of Roentgenology, 1998Co-Authors: Philippe Soyer, Jeanphilippe Brouland, M Boudiaf, M Kardache, J P Pelage, Y Panis, P Valleur, R RymerAbstract:Color velocity imaging is a color sonographic technique that uses data contained in gray-scale B-mode image scan lines to determine blood flow velocity. We prospectively determined if color velocity imaging and power Doppler sonography can be used to differentiate acute from chronic cholecystitis. We analyzed the potential role of using these two color imaging techniques as an adjunct to conventional gray-scale sonography to differentiate acute from chronic cholecystitis.One hundred twenty-nine patients with acute right upper quadrant pain or clinically suspected cholecystitis underwent color velocity imaging and power Doppler sonography of the Gallbladder as an adjunct to gray-scale sonography. Morphologic criteria were analyzed on gray-scale sonography, and the presence of flow within the Gallbladder Wall was assessed with color velocity imaging and power Doppler sonography. Imaging findings were compared with pathologic findings in the 50 patients who underwent cholecystectomy and with clinical and bio...
Barbara A Carroll - One of the best experts on this subject based on the ideXlab platform.
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diagnosis of acute cholecystitis with color doppler sonography significance of arterial flow in thickened Gallbladder Wall
American Journal of Roentgenology, 1994Co-Authors: Erik K Paulson, Mark A Kliewer, B S Hertzberg, S S Paine, Barbara A CarrollAbstract:Thickening of the Gallbladder Wall is a common though nonspecific sonographic finding. The purpose of this study was to determine if color Doppler sonography shows arterial flow in thickened Gallbladder Walls more frequently in patients with cholecystitis than in patients with other causes of thickening of the Wall.Seventy-six patients with thickened Gallbladder Walls (> or = 3 mm) were prospectively examined with color Doppler sonography. When arteries were detected, Doppler waveforms were used to determine resistive indexes. The final diagnosis was based on pathologic reports, results of percutaneous cholecystostomy, and clinical records.Of the 23 patients (30%) with cholecystitis (11 acute, 12 chronic), nine (39%) had arterial flow and 14 (61%) had no arterial flow. Of the 53 patients (70%) without cholecystitis, 20 (38%) had arterial flow and 33 (62%) had no arterial flow (p = 1.00). The mean resistive indexes (+/- 1 SD) for patients with and without cholecystitis were 60% +/- 13% and 65% +/- 9%, resp...
Martin M. Uggowitzer - One of the best experts on this subject based on the ideXlab platform.
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Sonography of acute cholecystitis: comparison of color and power Doppler sonography in detecting a hypervascularized Gallbladder Wall.
American Journal of Roentgenology, 1997Co-Authors: Martin M. Uggowitzer, C Kugler, G Schramayer, F Kammerhuber, R Gröll, Klaus A. Hausegger, Manfred Ratschek, F QuehenbergerAbstract:We evaluated the sensitivity and specificity of power Doppler sonography compared with conventional color Doppler sonography and gray-scale sonography in diagnosing patients with acute cholecystitis.Seventy-six patients with right upper quadrant pain and 72 healthy volunteers underwent gray-scale sonography, conventional color Doppler sonography, and power Doppler sonography of the Gallbladder. The vascularity of the Gallbladder Wall was scored on a scale of 0 to +3. Histology revealed acute cholecystitis in 55 patients. Histologic specimens and clinical workups showed that the remaining 21 patients suffered from other diseases.Sensitive sonographic features such as the positive Murphy's sign (in 96% of patients with acute cholecystitis), calculi (95%), and a thickened Gallbladder Wall (73%) lacked specificity (71%, 38%, 67%, respectively) for diagnosing acute cholecystitis. In our study, the sensitivity of power Doppler sonography was 95% compared with 33% for color Doppler sonography in revealing a hype...
Philippe Soyer - One of the best experts on this subject based on the ideXlab platform.
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color velocity imaging and power doppler sonography of the Gallbladder Wall a new look at sonographic diagnosis of acute cholecystitis
American Journal of Roentgenology, 1998Co-Authors: Philippe Soyer, Jeanphilippe Brouland, M Boudiaf, M Kardache, J P Pelage, Y Panis, P Valleur, R RymerAbstract:Color velocity imaging is a color sonographic technique that uses data contained in gray-scale B-mode image scan lines to determine blood flow velocity. We prospectively determined if color velocity imaging and power Doppler sonography can be used to differentiate acute from chronic cholecystitis. We analyzed the potential role of using these two color imaging techniques as an adjunct to conventional gray-scale sonography to differentiate acute from chronic cholecystitis.One hundred twenty-nine patients with acute right upper quadrant pain or clinically suspected cholecystitis underwent color velocity imaging and power Doppler sonography of the Gallbladder as an adjunct to gray-scale sonography. Morphologic criteria were analyzed on gray-scale sonography, and the presence of flow within the Gallbladder Wall was assessed with color velocity imaging and power Doppler sonography. Imaging findings were compared with pathologic findings in the 50 patients who underwent cholecystectomy and with clinical and bio...
