Assessment of image quality of 64-row Dual Source versus Single Source CT coronary angiography on heart rate: a phantom study |
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Authors: | Dikkers R Greuter M J W Kristanto W van Ooijen P M A Sijens P E Willems T P Oudkerk M |
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Institution: | a Department of Radiology, Division of Cardiothoracic Radiology, University of Michigan Medical Center, Ann Arbor, MI, USA b Division of Magnetic Resonance Imaging, University of Michigan Medical Center, Ann Arbor, MI, USA c Des Moines University, College of Osteopathic Medicine 3200 Grand Avenue, Des Moines, IA, USA |
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Abstract: | The purpose of this study was to evaluate the agreement between axial, multiplanar reformatted (MPR) and semi-automated software measurements of pulmonary vein ostial diameters and distance to the first bifurcation. CT examinations of the thorax were retrospectively reviewed in 150 consecutive patients. The pulmonary vein ostial diameter and distance to the first bifurcation of the four main pulmonary veins were independently measured. The three measurement methods were compared using a Bland-Altman test. There was no significant variation between pulmonary vein ostial diameter measurements for the superior pulmonary veins across the three measurement methods. There was significant variation between the semi-automated program and both the axial (p = 0.001) and MPR (p < 0.001) measured diameters for the right inferior pulmonary vein ostial diameter and between the MPR and semi-automated program measurements (p = 0.02) for the left inferior pulmonary vein ostial diameter. There was no significant variation between the pulmonary vein distance to first bifurcation measurements for any pulmonary vein across the three measurement methods. However, from a clinical perspective, differences were negligible; therefore, the clinician may confidently use any of the three measurement methods presented. |
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Keywords: | AF Atrial fibrillation CT Computed tomography MDCT Multidetector computed tomography MPR Multiplanar reformatted RSPV Right superior pulmonary vein RIPV Right inferior pulmonary vein LSPV Left superior pulmonary vein LIPV Left inferior pulmonary vein LA Left atrium |
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