Sources of error in the measurement of aortic diameter in computed tomography scans Juan Parodi, MD, Ramon Berguer, MD, PhD, Patricia Carrascosa, MD,

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Presentation transcript:

Sources of error in the measurement of aortic diameter in computed tomography scans Juan Parodi, MD, Ramon Berguer, MD, PhD, Patricia Carrascosa, MD, PhD, Khalil Khanafer, PhD, Carlos Capunay, MD, Eric Wizauer Journal of Vascular Surgery Volume 59, Issue 1, Pages 74-79 (January 2014) DOI: 10.1016/j.jvs.2013.07.005 Copyright © 2014 Society for Vascular Surgery Terms and Conditions

Fig 1 Percentage change in the transverse (DT) and anteroposterior (DAP) diameter measurements of the thoracic aorta between systole and diastole on gated scans at (a) 1 cm, (b) 4 cm, and (c) 8 cm from the left subclavian artery. Q, Quartile; STDEV, standard deviation. Journal of Vascular Surgery 2014 59, 74-79DOI: (10.1016/j.jvs.2013.07.005) Copyright © 2014 Society for Vascular Surgery Terms and Conditions

Fig 2 Difference between transverse (DT) and anteroposterior (DAP) measurements of thoracic diameter on gated scans at (a) 1 cm, (b) 4 cm, and (c) 8 cm from left subclavian artery. Q, Quartile; STDEV, standard deviation. Journal of Vascular Surgery 2014 59, 74-79DOI: (10.1016/j.jvs.2013.07.005) Copyright © 2014 Society for Vascular Surgery Terms and Conditions

Fig 3 Absolute difference between transverse diameter (DT) and the diameter based on lumen area (Dlumen) on gated scans in systole and diastole at (a) 1 cm, (b) 4 cm, and (c) 8 cm from the left subclavian artery. Q, Quartile; STDEV, standard deviation. Journal of Vascular Surgery 2014 59, 74-79DOI: (10.1016/j.jvs.2013.07.005) Copyright © 2014 Society for Vascular Surgery Terms and Conditions

Fig 4 Comparison of the image quality, emphasizing irregular outlines, between (left) nongated and (right) gated scans. Journal of Vascular Surgery 2014 59, 74-79DOI: (10.1016/j.jvs.2013.07.005) Copyright © 2014 Society for Vascular Surgery Terms and Conditions