The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform

Suhny Abbara - One of the best experts on this subject based on the ideXlab platform.

  • left main coronary artery compression syndrome evaluation with 64 slice cardiac Multidetector Computed Tomography
    Circulation, 2006
    Co-Authors: Thomas J Brady, Maros Ferencik, Michael D Shapiro, Jonathan D Dodd, Andrew O Maree, Igor F Palacios, Michael De Moor, Eline A Q Mooyaart, Suhny Abbara
    Abstract:

    A 28-year-old man presented to the emergency department with progressive shortness of breath complicated by large hemoptysis. At 3 months of age, he had been diagnosed with a “hole in his heart” in the Ukraine and had undergone 3 coronary catheterizations (2 in Russia, 1 in India; results unavailable). His parents had declined options for treatment. After stabilization in the emergency department, he was transferred to coronary care, where echocardiography demonstrated a persistent ductus arteriosus (PDA) measuring 0.9×2.0 cm with a right-to-left shunt consistent with Eisenmenger syndrome. Left ventricular function was severely impaired (ejection fraction=21%). Cardiac 64-slice Multidetector Computed Tomography (MDCT) was undertaken to provide optimal depiction of the PDA and main pulmonary artery (PA) and confirmed a widely patent PDA measuring 2.0 cm in largest diameter (Figure …

  • coronary Multidetector Computed Tomography in the assessment of patients with acute chest pain
    Circulation, 2006
    Co-Authors: Udo Hoffmann, Ricardo C Cury, Fabian Moselewski, Suhny Abbara, Maros Ferencik, John T Nagurney, Antonio J Pena, Claudia U Chae, Javed Butler, David F M Brown
    Abstract:

    Background— Noninvasive assessment of coronary atherosclerotic plaque and significant stenosis by coronary Multidetector Computed Tomography (MDCT) may improve early and accurate triage of patients...

  • Comparison of the degree of coronary stenoses by Multidetector Computed Tomography versus by quantitative coronary angiography.
    The American journal of cardiology, 2005
    Co-Authors: Ricardo C Cury, Fabian Moselewski, Suhny Abbara, Thomas J Brady, Ikkyung Jang, Maros Ferencik, Udo Hoffmann, Eugene Pomerantsev, Koen Nieman, Stephan Achenbach
    Abstract:

    Sixteen-slice Multidetector Computed Tomography (MDCT) and quantitative coronary angiography (QCA) were performed in 29 patients. Quantification of the degree of luminal narrowing and lesion length measurements were performed independently on MDCT and QCA at 42 sites with sufficient Computed tomographic image quality. The correlation between MDCT and QCA for quantifying the degree of stenosis was excellent (r 2 = 0.93), although a systematic overestimation was observed by MDCT (bias 4% ± 8%). The correlation between MDCT and QCA was moderate with respect to lesion length (r 2 = 0.54). In the absence of severe calcifications or motion artifacts, MDCT permits noninvasive quantification of coronary stenosis.

  • comparison of measurement of cross sectional coronary atherosclerotic plaque and vessel areas by 16 slice Multidetector Computed Tomography versus intravascular ultrasound
    American Journal of Cardiology, 2004
    Co-Authors: Fabian Moselewski, Karsten Pohle, Raymond Chan, Ricardo C Cury, Suhny Abbara, Ikkyung Jang, Dieter Ropers, Maros Ferencik, Udo Hoffmann, Thomas J Brady
    Abstract:

    In 26 patients, 16-slice Multidetector Computed Tomography (MDCT) with 0.75-mm collimation and intravascular ultrasound (IVUS) of 1 coronary artery were performed. At 100 sites within the coronary arteries, the measurement of cross-sectional luminal area and, if detectable, the cross-sectional area of atherosclerotic plaque was performed independently with IVUS and MDCT. The mean luminal area (r = 0.92), measured at 100 sites, and plaque area (r = 0.55), measured at 65 sites, were significantly correlated (p

  • comparison of measurement of cross sectional coronary atherosclerotic plaque and vessel areas by 16 slice Multidetector Computed Tomography versus intravascular ultrasound
    American Journal of Cardiology, 2004
    Co-Authors: Fabian Moselewski, Karsten Pohle, Raymond Chan, Ricardo C Cury, Suhny Abbara, Ikkyung Jang, Dieter Ropers, Maros Ferencik, Udo Hoffmann, Thomas J Brady
    Abstract:

    In 26 patients, 16-slice Multidetector Computed Tomography (MDCT) with 0.75-mm collimation and intravascular ultrasound (IVUS) of 1 coronary artery were performed. At 100 sites within the coronary arteries, the measurement of cross-sectional luminal area and, if detectable, the cross-sectional area of atherosclerotic plaque was performed independently with IVUS and MDCT. The mean luminal area (r = 0.92), measured at 100 sites, and plaque area (r = 0.55), measured at 65 sites, were significantly correlated (p <0.001) between MDCT and IVUS. The mean luminal area and mean plaque area were slightly but significantly overestimated with MDCT. MDCT permits the noninvasive measurement of coronary cross-sectional luminal and plaque areas with moderate accuracy.

Thomas J Brady - One of the best experts on this subject based on the ideXlab platform.

  • Multidetector Computed Tomography for the detection of left atrial appendage thrombus a comparative study with transesophageal echocardiography
    Journal of Computer Assisted Tomography, 2007
    Co-Authors: Michael D Shapiro, Thomas J Brady, Udo Hoffmann, Javed Butler, Tomas G Neilan, Davinder S Jassal, Bharat Samy, Khurram Nasir, Ammar Sarwar, Ricardo C Cury
    Abstract:

    Objective To determine the diagnostic performance of Multidetector Computed Tomography (MDCT) for the detection of left atrial appendage (LAA) thrombus as compared with transesophageal echocardiography. Methods Multidetector Computed Tomography was evaluated in 43 patients qualitatively for the presence or absence of a filling defect in the LAA and compared with transesophageal echocardiography. Additionally, a ratio of the mean Computed tomographic attenuation in the LAA apex to the mean Computed tomographic attenuation in the aortic root was used for quantitative evaluation. Results A filling defect visualized in the LAA by MDCT corresponded to a sensitivity of 70% (7/10), a specificity of 82% (27/33), and a negative predictive value of 90% (27/30) for detection of LAA thrombus. When using quantitative parameters, MDCT demonstrated a sensitivity of 80% (8/10), a specificity of 73% (24/33), and a negative predictive value of 92% (24/26). Multidetector Computed Tomography was not able to differentiate LAA thrombus from spontaneous echo contrast by either visual evaluation or by quantitative parameters. Conclusions Multidetector Computed Tomography remains limited for the detection of LAA thrombus. However, a subgroup of patients at very high risk for LAA thrombus may benefit from the high negative predictive value of cardiac MDCT.

  • left main coronary artery compression syndrome evaluation with 64 slice cardiac Multidetector Computed Tomography
    Circulation, 2006
    Co-Authors: Thomas J Brady, Maros Ferencik, Michael D Shapiro, Jonathan D Dodd, Andrew O Maree, Igor F Palacios, Michael De Moor, Eline A Q Mooyaart, Suhny Abbara
    Abstract:

    A 28-year-old man presented to the emergency department with progressive shortness of breath complicated by large hemoptysis. At 3 months of age, he had been diagnosed with a “hole in his heart” in the Ukraine and had undergone 3 coronary catheterizations (2 in Russia, 1 in India; results unavailable). His parents had declined options for treatment. After stabilization in the emergency department, he was transferred to coronary care, where echocardiography demonstrated a persistent ductus arteriosus (PDA) measuring 0.9×2.0 cm with a right-to-left shunt consistent with Eisenmenger syndrome. Left ventricular function was severely impaired (ejection fraction=21%). Cardiac 64-slice Multidetector Computed Tomography (MDCT) was undertaken to provide optimal depiction of the PDA and main pulmonary artery (PA) and confirmed a widely patent PDA measuring 2.0 cm in largest diameter (Figure …

  • Comparison of the degree of coronary stenoses by Multidetector Computed Tomography versus by quantitative coronary angiography.
    The American journal of cardiology, 2005
    Co-Authors: Ricardo C Cury, Fabian Moselewski, Suhny Abbara, Thomas J Brady, Ikkyung Jang, Maros Ferencik, Udo Hoffmann, Eugene Pomerantsev, Koen Nieman, Stephan Achenbach
    Abstract:

    Sixteen-slice Multidetector Computed Tomography (MDCT) and quantitative coronary angiography (QCA) were performed in 29 patients. Quantification of the degree of luminal narrowing and lesion length measurements were performed independently on MDCT and QCA at 42 sites with sufficient Computed tomographic image quality. The correlation between MDCT and QCA for quantifying the degree of stenosis was excellent (r 2 = 0.93), although a systematic overestimation was observed by MDCT (bias 4% ± 8%). The correlation between MDCT and QCA was moderate with respect to lesion length (r 2 = 0.54). In the absence of severe calcifications or motion artifacts, MDCT permits noninvasive quantification of coronary stenosis.

  • comparison of measurement of cross sectional coronary atherosclerotic plaque and vessel areas by 16 slice Multidetector Computed Tomography versus intravascular ultrasound
    American Journal of Cardiology, 2004
    Co-Authors: Fabian Moselewski, Karsten Pohle, Raymond Chan, Ricardo C Cury, Suhny Abbara, Ikkyung Jang, Dieter Ropers, Maros Ferencik, Udo Hoffmann, Thomas J Brady
    Abstract:

    In 26 patients, 16-slice Multidetector Computed Tomography (MDCT) with 0.75-mm collimation and intravascular ultrasound (IVUS) of 1 coronary artery were performed. At 100 sites within the coronary arteries, the measurement of cross-sectional luminal area and, if detectable, the cross-sectional area of atherosclerotic plaque was performed independently with IVUS and MDCT. The mean luminal area (r = 0.92), measured at 100 sites, and plaque area (r = 0.55), measured at 65 sites, were significantly correlated (p

  • comparison of measurement of cross sectional coronary atherosclerotic plaque and vessel areas by 16 slice Multidetector Computed Tomography versus intravascular ultrasound
    American Journal of Cardiology, 2004
    Co-Authors: Fabian Moselewski, Karsten Pohle, Raymond Chan, Ricardo C Cury, Suhny Abbara, Ikkyung Jang, Dieter Ropers, Maros Ferencik, Udo Hoffmann, Thomas J Brady
    Abstract:

    In 26 patients, 16-slice Multidetector Computed Tomography (MDCT) with 0.75-mm collimation and intravascular ultrasound (IVUS) of 1 coronary artery were performed. At 100 sites within the coronary arteries, the measurement of cross-sectional luminal area and, if detectable, the cross-sectional area of atherosclerotic plaque was performed independently with IVUS and MDCT. The mean luminal area (r = 0.92), measured at 100 sites, and plaque area (r = 0.55), measured at 65 sites, were significantly correlated (p <0.001) between MDCT and IVUS. The mean luminal area and mean plaque area were slightly but significantly overestimated with MDCT. MDCT permits the noninvasive measurement of coronary cross-sectional luminal and plaque areas with moderate accuracy.

Maros Ferencik - One of the best experts on this subject based on the ideXlab platform.

  • left main coronary artery compression syndrome evaluation with 64 slice cardiac Multidetector Computed Tomography
    Circulation, 2006
    Co-Authors: Thomas J Brady, Maros Ferencik, Michael D Shapiro, Jonathan D Dodd, Andrew O Maree, Igor F Palacios, Michael De Moor, Eline A Q Mooyaart, Suhny Abbara
    Abstract:

    A 28-year-old man presented to the emergency department with progressive shortness of breath complicated by large hemoptysis. At 3 months of age, he had been diagnosed with a “hole in his heart” in the Ukraine and had undergone 3 coronary catheterizations (2 in Russia, 1 in India; results unavailable). His parents had declined options for treatment. After stabilization in the emergency department, he was transferred to coronary care, where echocardiography demonstrated a persistent ductus arteriosus (PDA) measuring 0.9×2.0 cm with a right-to-left shunt consistent with Eisenmenger syndrome. Left ventricular function was severely impaired (ejection fraction=21%). Cardiac 64-slice Multidetector Computed Tomography (MDCT) was undertaken to provide optimal depiction of the PDA and main pulmonary artery (PA) and confirmed a widely patent PDA measuring 2.0 cm in largest diameter (Figure …

  • coronary Multidetector Computed Tomography in the assessment of patients with acute chest pain
    Circulation, 2006
    Co-Authors: Udo Hoffmann, Ricardo C Cury, Fabian Moselewski, Suhny Abbara, Maros Ferencik, John T Nagurney, Antonio J Pena, Claudia U Chae, Javed Butler, David F M Brown
    Abstract:

    Background— Noninvasive assessment of coronary atherosclerotic plaque and significant stenosis by coronary Multidetector Computed Tomography (MDCT) may improve early and accurate triage of patients...

  • Comparison of the degree of coronary stenoses by Multidetector Computed Tomography versus by quantitative coronary angiography.
    The American journal of cardiology, 2005
    Co-Authors: Ricardo C Cury, Fabian Moselewski, Suhny Abbara, Thomas J Brady, Ikkyung Jang, Maros Ferencik, Udo Hoffmann, Eugene Pomerantsev, Koen Nieman, Stephan Achenbach
    Abstract:

    Sixteen-slice Multidetector Computed Tomography (MDCT) and quantitative coronary angiography (QCA) were performed in 29 patients. Quantification of the degree of luminal narrowing and lesion length measurements were performed independently on MDCT and QCA at 42 sites with sufficient Computed tomographic image quality. The correlation between MDCT and QCA for quantifying the degree of stenosis was excellent (r 2 = 0.93), although a systematic overestimation was observed by MDCT (bias 4% ± 8%). The correlation between MDCT and QCA was moderate with respect to lesion length (r 2 = 0.54). In the absence of severe calcifications or motion artifacts, MDCT permits noninvasive quantification of coronary stenosis.

  • comparison of measurement of cross sectional coronary atherosclerotic plaque and vessel areas by 16 slice Multidetector Computed Tomography versus intravascular ultrasound
    American Journal of Cardiology, 2004
    Co-Authors: Fabian Moselewski, Karsten Pohle, Raymond Chan, Ricardo C Cury, Suhny Abbara, Ikkyung Jang, Dieter Ropers, Maros Ferencik, Udo Hoffmann, Thomas J Brady
    Abstract:

    In 26 patients, 16-slice Multidetector Computed Tomography (MDCT) with 0.75-mm collimation and intravascular ultrasound (IVUS) of 1 coronary artery were performed. At 100 sites within the coronary arteries, the measurement of cross-sectional luminal area and, if detectable, the cross-sectional area of atherosclerotic plaque was performed independently with IVUS and MDCT. The mean luminal area (r = 0.92), measured at 100 sites, and plaque area (r = 0.55), measured at 65 sites, were significantly correlated (p

  • comparison of measurement of cross sectional coronary atherosclerotic plaque and vessel areas by 16 slice Multidetector Computed Tomography versus intravascular ultrasound
    American Journal of Cardiology, 2004
    Co-Authors: Fabian Moselewski, Karsten Pohle, Raymond Chan, Ricardo C Cury, Suhny Abbara, Ikkyung Jang, Dieter Ropers, Maros Ferencik, Udo Hoffmann, Thomas J Brady
    Abstract:

    In 26 patients, 16-slice Multidetector Computed Tomography (MDCT) with 0.75-mm collimation and intravascular ultrasound (IVUS) of 1 coronary artery were performed. At 100 sites within the coronary arteries, the measurement of cross-sectional luminal area and, if detectable, the cross-sectional area of atherosclerotic plaque was performed independently with IVUS and MDCT. The mean luminal area (r = 0.92), measured at 100 sites, and plaque area (r = 0.55), measured at 65 sites, were significantly correlated (p <0.001) between MDCT and IVUS. The mean luminal area and mean plaque area were slightly but significantly overestimated with MDCT. MDCT permits the noninvasive measurement of coronary cross-sectional luminal and plaque areas with moderate accuracy.

Fabian Moselewski - One of the best experts on this subject based on the ideXlab platform.

Udo Hoffmann - One of the best experts on this subject based on the ideXlab platform.

  • Multidetector Computed Tomography for the detection of left atrial appendage thrombus a comparative study with transesophageal echocardiography
    Journal of Computer Assisted Tomography, 2007
    Co-Authors: Michael D Shapiro, Thomas J Brady, Udo Hoffmann, Javed Butler, Tomas G Neilan, Davinder S Jassal, Bharat Samy, Khurram Nasir, Ammar Sarwar, Ricardo C Cury
    Abstract:

    Objective To determine the diagnostic performance of Multidetector Computed Tomography (MDCT) for the detection of left atrial appendage (LAA) thrombus as compared with transesophageal echocardiography. Methods Multidetector Computed Tomography was evaluated in 43 patients qualitatively for the presence or absence of a filling defect in the LAA and compared with transesophageal echocardiography. Additionally, a ratio of the mean Computed tomographic attenuation in the LAA apex to the mean Computed tomographic attenuation in the aortic root was used for quantitative evaluation. Results A filling defect visualized in the LAA by MDCT corresponded to a sensitivity of 70% (7/10), a specificity of 82% (27/33), and a negative predictive value of 90% (27/30) for detection of LAA thrombus. When using quantitative parameters, MDCT demonstrated a sensitivity of 80% (8/10), a specificity of 73% (24/33), and a negative predictive value of 92% (24/26). Multidetector Computed Tomography was not able to differentiate LAA thrombus from spontaneous echo contrast by either visual evaluation or by quantitative parameters. Conclusions Multidetector Computed Tomography remains limited for the detection of LAA thrombus. However, a subgroup of patients at very high risk for LAA thrombus may benefit from the high negative predictive value of cardiac MDCT.

  • coronary Multidetector Computed Tomography in the assessment of patients with acute chest pain
    Circulation, 2006
    Co-Authors: Udo Hoffmann, Ricardo C Cury, Fabian Moselewski, Suhny Abbara, Maros Ferencik, John T Nagurney, Antonio J Pena, Claudia U Chae, Javed Butler, David F M Brown
    Abstract:

    Background— Noninvasive assessment of coronary atherosclerotic plaque and significant stenosis by coronary Multidetector Computed Tomography (MDCT) may improve early and accurate triage of patients...

  • Comparison of the degree of coronary stenoses by Multidetector Computed Tomography versus by quantitative coronary angiography.
    The American journal of cardiology, 2005
    Co-Authors: Ricardo C Cury, Fabian Moselewski, Suhny Abbara, Thomas J Brady, Ikkyung Jang, Maros Ferencik, Udo Hoffmann, Eugene Pomerantsev, Koen Nieman, Stephan Achenbach
    Abstract:

    Sixteen-slice Multidetector Computed Tomography (MDCT) and quantitative coronary angiography (QCA) were performed in 29 patients. Quantification of the degree of luminal narrowing and lesion length measurements were performed independently on MDCT and QCA at 42 sites with sufficient Computed tomographic image quality. The correlation between MDCT and QCA for quantifying the degree of stenosis was excellent (r 2 = 0.93), although a systematic overestimation was observed by MDCT (bias 4% ± 8%). The correlation between MDCT and QCA was moderate with respect to lesion length (r 2 = 0.54). In the absence of severe calcifications or motion artifacts, MDCT permits noninvasive quantification of coronary stenosis.

  • comparison of measurement of cross sectional coronary atherosclerotic plaque and vessel areas by 16 slice Multidetector Computed Tomography versus intravascular ultrasound
    American Journal of Cardiology, 2004
    Co-Authors: Fabian Moselewski, Karsten Pohle, Raymond Chan, Ricardo C Cury, Suhny Abbara, Ikkyung Jang, Dieter Ropers, Maros Ferencik, Udo Hoffmann, Thomas J Brady
    Abstract:

    In 26 patients, 16-slice Multidetector Computed Tomography (MDCT) with 0.75-mm collimation and intravascular ultrasound (IVUS) of 1 coronary artery were performed. At 100 sites within the coronary arteries, the measurement of cross-sectional luminal area and, if detectable, the cross-sectional area of atherosclerotic plaque was performed independently with IVUS and MDCT. The mean luminal area (r = 0.92), measured at 100 sites, and plaque area (r = 0.55), measured at 65 sites, were significantly correlated (p

  • comparison of measurement of cross sectional coronary atherosclerotic plaque and vessel areas by 16 slice Multidetector Computed Tomography versus intravascular ultrasound
    American Journal of Cardiology, 2004
    Co-Authors: Fabian Moselewski, Karsten Pohle, Raymond Chan, Ricardo C Cury, Suhny Abbara, Ikkyung Jang, Dieter Ropers, Maros Ferencik, Udo Hoffmann, Thomas J Brady
    Abstract:

    In 26 patients, 16-slice Multidetector Computed Tomography (MDCT) with 0.75-mm collimation and intravascular ultrasound (IVUS) of 1 coronary artery were performed. At 100 sites within the coronary arteries, the measurement of cross-sectional luminal area and, if detectable, the cross-sectional area of atherosclerotic plaque was performed independently with IVUS and MDCT. The mean luminal area (r = 0.92), measured at 100 sites, and plaque area (r = 0.55), measured at 65 sites, were significantly correlated (p <0.001) between MDCT and IVUS. The mean luminal area and mean plaque area were slightly but significantly overestimated with MDCT. MDCT permits the noninvasive measurement of coronary cross-sectional luminal and plaque areas with moderate accuracy.