TY - JOUR
T1 - Planimetric measurement of the regurgitant orifice area using multidetector CT for aortic regurgitation
T2 - A comparison with the use of echocardiography
AU - Jeon, Min Hee
AU - Choe, Yeon Hyeon
AU - Cho, Soo Jin
AU - Park, Seung Woo
AU - Park, Pyo Won
AU - Oh, Jae K.
PY - 2010/3
Y1 - 2010/3
N2 - Objective: This study compared the area of the regurgitant orifice, as measured by the use of multidetector-row CT (MDCT), with the severity of aortic regurgitation (AR) as determined by the use of echocardiography for AR. Materials and Methods: In this study, 45 AR patients underwent electrocardiography- gated 40-slice or 64-slice MDCT and transthoracic or transesophageal echocardiography. We reconstructed CT data sets during mid-systolic to enddiastolic phases in 10% steps (20% and 35-95% of the R-R interval), planimetrically measuring the abnormally opened aortic valve area during diastole on CT reformatted images and comparing the area of the aortic regurgitant orifice (ARO) so measured with the severity of AR, as determined by echocardiography. Results: In the 14 patients found to have mild AR, the ARO area was 0.18± 0.13 cm2 (range, 0.04-0.54 cm2). In the 15 moderate AR patients, the ARO area was 0.36 ± 0.23 cm2 (range, 0.09-0.81 cm2). In the 16 severe AR patients, the ARO area was 1.00 ± 0.51 cm2 (range, 0.23-1.84 cm2). Receiver-operator characteristic curve analysis determined a sensitivity of 85% and a specificity of 82%, for a cutoff of 0.47 cm2, to distinguish severe AR from less than severe AR with the use of CT (area under the curve = 0.91; 95% confidence interval, 0.84-1.00; p < 0.001). Conclusion: Planimetric measurement of the ARO area using MDCT is useful for the quantitative evaluation of the severity of aortic regurgitation.
AB - Objective: This study compared the area of the regurgitant orifice, as measured by the use of multidetector-row CT (MDCT), with the severity of aortic regurgitation (AR) as determined by the use of echocardiography for AR. Materials and Methods: In this study, 45 AR patients underwent electrocardiography- gated 40-slice or 64-slice MDCT and transthoracic or transesophageal echocardiography. We reconstructed CT data sets during mid-systolic to enddiastolic phases in 10% steps (20% and 35-95% of the R-R interval), planimetrically measuring the abnormally opened aortic valve area during diastole on CT reformatted images and comparing the area of the aortic regurgitant orifice (ARO) so measured with the severity of AR, as determined by echocardiography. Results: In the 14 patients found to have mild AR, the ARO area was 0.18± 0.13 cm2 (range, 0.04-0.54 cm2). In the 15 moderate AR patients, the ARO area was 0.36 ± 0.23 cm2 (range, 0.09-0.81 cm2). In the 16 severe AR patients, the ARO area was 1.00 ± 0.51 cm2 (range, 0.23-1.84 cm2). Receiver-operator characteristic curve analysis determined a sensitivity of 85% and a specificity of 82%, for a cutoff of 0.47 cm2, to distinguish severe AR from less than severe AR with the use of CT (area under the curve = 0.91; 95% confidence interval, 0.84-1.00; p < 0.001). Conclusion: Planimetric measurement of the ARO area using MDCT is useful for the quantitative evaluation of the severity of aortic regurgitation.
KW - Aortic regurgitation
KW - Computed tomography (CT)
KW - Echocardiography
KW - Planimetry
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U2 - 10.3348/kjr.2010.11.2.169
DO - 10.3348/kjr.2010.11.2.169
M3 - Article
C2 - 20191064
AN - SCOPUS:77950635548
SN - 1229-6929
VL - 11
SP - 169
EP - 177
JO - Korean Journal of Radiology
JF - Korean Journal of Radiology
IS - 2
ER -