Planimetric Measurement of the Regurgitant Orifice Area Using Multidetector CT for Aortic Regurgitation: a Comparison with the Use of Echocardiography
Korean Journal of Radiology
;
: 169-177, 2010.
Artículo
en Inglés
| WPRIM
| ID: wpr-127080
ABSTRACT
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 ANDMETHODS:
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.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Válvula Aórtica
/
Insuficiencia de la Válvula Aórtica
/
Índice de Severidad de la Enfermedad
/
Pesos y Medidas Corporales
/
Ecocardiografía
/
Tomografía Computarizada por Rayos X
/
Estudios Retrospectivos
/
Curva ROC
/
Sensibilidad y Especificidad
/
Ecocardiografía Transesofágica
Tipo de estudio:
Estudio diagnóstico
/
Estudio observacional
/
Estudio pronóstico
Límite:
Adolescente
/
Adulto
/
Anciano
/
Aged80
/
Femenino
/
Humanos
/
Masculino
Idioma:
Inglés
Revista:
Korean Journal of Radiology
Año:
2010
Tipo del documento:
Artículo
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