Evaluation of left ventricular function using volumetric computed tomography in the clinical setting.
OBJECTIVE
To correlate the left ventricular parameters obtained with 64-slice Volumetric Computed Tomography (VCT) with those obtained with the reference standard, cardiovascular magnetic resonance (CMR) imaging.


METHODS
VCT and a 3.0T MRI scanner were used. Results from both studies were independently evaluated by two cardiologists. A linear correlation and a paired Student's t test were used to analyze the data with a P<0.05 being considered significant.


RESULTS
Thirty consecutive patients were evaluated with VCT and CMR. The left ventricular indices for CMR and VCT were, respectively, mass 86.4±25.8 vs. 82.7±27.6g (P=0.31); ESV 45.5±27.8 vs. 48.7±40.4ml (P=.405); EDV 101.3±32.7 vs. 105.1±44.0ml (P=0.475); SV 55.9±16.1 vs. 56.8±15.6ml (P=0.713); LVEF 57.5±13.2% vs. 56.9±12.4% (P=0.630). No differences in intraobserver variability for both methods were found, CT r=0.96, r(2)=0.92 P<0.0001 and MR r=0.96 r(2)=0.93 P<0.0001. There was no significant statistical difference in the presence of artifacts.


CONCLUSIONS
There is a close correlation between CMRI and VCT in the evaluation of LV function. VCT is as useful as 3T CMR, and could be incorporated as another resource for evaluating LV function.
Cátedra de Cardiología, Departamento de Investigación Básica y Transferencia, Instituto de Cardiología y Medicina Vascular, Hospital Zambrano Helión, Tecnológico de Monterrey, Escuela de Medicina y Ciencias de la Salud, San Pedro Garza García, Nuevo León, Mexico. Electronic address: edelapena@itesm.mx.
Erasmo
E
de la Peña-Almaguer
Cátedra de Cardiología, Departamento de Cardiología, Hospital San José, Tecnológico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Monterrey, Nuevo León, Mexico.
Alejandro R
AR
Trevino
Imagen Cardiovascular, Departamento de Cardiología, Centro Médico ABC, México, D.F., Mexico.
Lilia
L
Sierra-Galan
Departamento de Cardiología, Hospital Christus Muguerza Alta Especialidad, Universidad de Monterrey, Escuela de Medicina, Monterrey, Nuevo León, Mexico.
José R
JR
Azpiri-Lopez
Departamento de Cardiología, Hospital Christus Muguerza Alta Especialidad, Universidad de Monterrey, Escuela de Medicina, Monterrey, Nuevo León, Mexico.
José L
JL
Assad-Morell
Cardiovascular Imaging, Department of Radiology, Cleveland Clinic Florida Hospital, Cleveland Clinic, Weston, FL, United States.
Jacobo
J
Kirsch
Cardiovascular Imaging, Department of Cardiology, DeBakey Heart and Vascular Center, The Methodist Hospital, Weill Cornell College of Medicine, Houston, TX, United States.
Su Min
SM
Chang
D054893:Cone-Beam Computed Tomography; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D005260:Female; D006334:Heart Function Tests / Q000379:methods; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D016277:Ventricular Function, Left / Q000502:physiology*
Cardiovascular magnetic resonance; Computed tomography; Ejection fraction; Fracción de eyección; Mexico; México; Resonancia magnética cardiaca; Tomografía computarizada