Clinical evaluation of a fully automated model-based algorithm to calculate left ventricular volumes and ejection fraction using multidetector computed tomography

2009 ◽  
Vol 11 (1) ◽  
pp. 43-51 ◽  
Author(s):  
Eduard Ghersin ◽  
Sobhi Abadi ◽  
Sergey Yalonetsky ◽  
Ahuva Engel ◽  
Jonathan Lessick
Keyword(s):  
Computed Tomography ◽  
Ejection Fraction ◽  
Multidetector Computed Tomography ◽  
Clinical Evaluation ◽  
Left Ventricular ◽  
Left Ventricular Volumes ◽  
Ventricular Volumes ◽  
Model Based

Assessment of left ventricular volumes, ejection fraction and mass

2011 ◽  
Vol 50 (01) ◽  
pp. 9-14 ◽  
Author(s):  
M. Gyöngyösi ◽  
H. Sochor ◽  
G. Maurer ◽  
G. Karanikas ◽  
R. Dudczak ◽  
...  
Keyword(s):  
Ejection Fraction ◽  
Pet Imaging ◽  
Fdg Pet ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Left Ventricular Volumes ◽  
Myocardial Mass ◽  
Ventricular Volumes ◽  
Model Based ◽  
Model Based Analysis

Summary Aim: We compared and delineated possible differences of model-based analysis of ECGgated SPECT using 99mTc-sestamibi (Tc- SPECT) with ECG-gated 18F-fluorodeoxyglucose- PET (FDG-PET) for determination of enddiastolic (EDV) and end-systolic (ESV) cardiac volumes, left ventricular ejection fraction (LVEF), and myocardial mass (LVMM). Patients, methods: 24 patients (21 men; age: 54 ± 12years) with coronary artery disease underwent Tc-SPECT and FDG-PET imaging for evaluation of myocardial perfusion and viability. By using model-based analysis EDV, ESV, LVEF and LVMM were calculated from short axis images of both Tc-SPECT and FDGPET. Results: Left ventricular volumes by Tc- SPECT and FDG-PET were 176 ± 60 ml and 181 ± 59 ml for EDV, and 97 ± 44 ml and 103 ± 45 ml for ESV respectively, LVEF was 47 ± 8% by Tc-SPECT and 45 ± 9% by FDG-PET. The LVMM was 214 ± 40 g (Tc-SPECT) and 202 ± 43 g (FDG-PET) (all p = NS, paired t-test). A significant correlation was observed between Tc-SPECT and FDG-PET imaging for calculation of EDV (r = 0.93), ESV (r = 0.93), LVEF (r = 0.83) and LVMM (r = 0.72). Conclusion: ECG-gated Tc-SPECT and FDG-PET using two tracers with different characteristics (perfusion versus metabolism) showed close agreement concerning measurements of left ventricular volumes, contractile function and myocardial mass by using a model-based analysis.

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