Impact of Ventricular Contrast Medium Attenuation on the Accuracy of Left and Right Ventricular Function Analysis at Cardiac Multi Detector-row CT Compared with Cardiac MRI

Lee, Heon; Kim, Seokyeon; Gebregziabher, Mulugeta; Hanna, Elias; Schoepf, U. Joseph

doi:10.1016/j.acra.2011.11.012

Cited by 11 publications

(9 citation statements)

References 24 publications

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“…All four datasets were transferred to a remote workstation equipped with semi-automated post-processing software (Aquarius, TeraRecon, San Mateo, CA, USA) which utilizes a threshold-based region-growing technique to calculate the LV volume for all phases. The papillary muscles were excluded from the volume calculations as is usual with current threshold-based volumetric software applications (1920). The LV diastolic filling pressure was then evaluated based on the calculation of transmitral velocity and mitral septal tissue velocity as described in previous study (18).…”

Section: Methodsmentioning

confidence: 99%

Estimation of Diastolic Filling Pressure with Cardiac CT in Comparison with Echocardiography Using Tissue Doppler Imaging: Determination of Optimal CT Reconstruction Parameters

Hwang

Lee

et al. 2017

Korean J Radiol

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ObjectiveTo determine the optimal CT image reconstruction parameters for the measurement of early transmitral peak velocity (E), early peak mitral septal tissue velocity (E′), and E / E′.Materials and MethodsForty-six patients underwent simultaneous cardiac CT and echocardiography on the same day. Four CT datasets were reconstructed with a slice thickness/interval of 0.9/0.9 mm or 3/3 mm at 10 (10% RR-interval) or 20 (5% RR-interval) RR-intervals. The E was calculated by dividing the peak transmitral flow (mL/s) by the corresponding mitral valve area (cm2). E′ was calculated from the changes in the left ventricular length per cardiac phase. E / E′ was then estimated and compared with that from echocardiography.ResultsFor assessment of E / E′, CT and echocardiography were more strongly correlated (p < 0.05) with a slice thickness of 0.9 mm and 5% RR-interval (r = 0.77) than with 3 mm or 10% RR-interval. The diagnostic accuracy of predicting elevated filling pressure (E / E′ ≥ 13, n = 14) was better with a slice thickness of 0.9 mm and 5% RR-interval (87.0%) than with 0.9 mm and 10% RR-interval (71.7%) (p = 0.123) and significantly higher than that with a slice thickness of 3 mm with 5% (67.4%) and 10% RR-interval (63.0%), (p < 0.05), respectively.ConclusionData reconstruction with a slice thickness of 0.9 mm at 5% RR-interval is superior to that with a slice thickness of 3 mm or 10% RR-interval in terms of the correlation of E / E′ between CT and echocardiography. Thin slices and frequent sampling also allow for more accurate prediction of elevated filling pressure.

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Section: Methodsmentioning

confidence: 99%

Estimation of Diastolic Filling Pressure with Cardiac CT in Comparison with Echocardiography Using Tissue Doppler Imaging: Determination of Optimal CT Reconstruction Parameters

Hwang

Lee

et al. 2017

Korean J Radiol

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“…The number of CT slices was ≥ 64 (15,(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29) in 13 studies and < 64 in 7 studies. In studies with ≥ 64 CT slices (6, 11-14, 16, 17), EDV and ESV showed a lower weighted bias and narrower LOA than in studies with < 64 CT slices.…”

Section: Subgroup Analysismentioning

confidence: 97%

“…The Simpson's method was used in 14 studies for RV volume measurement on CT (12-20, 22, 24, 26, 28, 29), while 3D-based methods were used in 5 studies (6,21,23,25,27), and Koch et al (11) used both methods in the same study population. Studies using Simpson's method showed a lower bias and narrower LOA for EDV and ESV than kjronline.org those using a 3D-based method.…”

Section: Subgroup Analysismentioning

confidence: 99%

“…Five studies excluded the papillary muscle and trabeculation from the RV cavity (11,12,16,17,23), while 12 studies included them in contouring of the RV endocardial border (6, 15, 18-22, 24, 26-28). Three studies did not mention the segmentation method (13,14,25).…”

Section: Subgroup Analysismentioning

confidence: 99%

“…With the recent improvements in the temporal and spatial resolution of computed tomography (CT) scanners, cardiac CT can be used to assess RV volume and function (10). Previous studies that compared CT measurements of RV volume and function with CMRI as the reference standard showed variable results regarding the agreement between cardiac CT and CMRI (6,(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29). These variable results may be attributable to the differences in RV segmentation methods in cardiac CT and MRI; for example, two-dimensional (2D)-vs. threedimensional (3D)-based methods, manual vs. semiautomatic vs. automatic segmentation, and threshold-based segmentation vs. simplified contouring (30)(31)(32)(33).…”

Section: Introductionmentioning

confidence: 99%

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Cardiac CT for Measurement of Right Ventricular Volume and Function in Comparison with Cardiac MRI: A Meta-Analysis

et al. 2020

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Objective: We performed a meta-analysis to evaluate the agreement of cardiac computed tomography (CT) with cardiac magnetic resonance imaging (CMRI) in the assessment of right ventricle (RV) volume and functional parameters. Materials and Methods: PubMed, EMBASE, and Cochrane library were systematically searched for studies that compared CT with CMRI as the reference standard for measurement of the following RV parameters: end-diastolic volume (EDV), endsystolic volume (ESV), stroke volume (SV), or ejection fraction (EF). Meta-analytic methods were utilized to determine the pooled weighted bias, limits of agreement (LOA), and correlation coefficient (r) between CT and CMRI. Heterogeneity was also assessed. Subgroup analyses were performed based on the probable factors affecting measurement of RV volume: CT contrast protocol, number of CT slices, CT reconstruction interval, CT volumetry, and segmentation methods. Results: A total of 766 patients from 20 studies were included. Pooled bias and LOA were 3.1 mL (-5.7 to 11.8 mL), 3.6 mL (-4.0 to 11.2 mL),-0.4 mL (5.7 to 5.0 mL), and-1.8% (-5.7 to 2.2%) for EDV, ESV, SV, and EF, respectively. Pooled correlation coefficients were very strong for the RV parameters (r = 0.87-0.93). Heterogeneity was observed in the studies (I 2 > 50%, p < 0.1). In the subgroup analysis, an RV-dedicated contrast protocol, ≥ 64 CT slices, CT volumetry with the Simpson's method, and inclusion of the papillary muscle and trabeculation had a lower pooled bias and narrower LOA. Conclusion: Cardiac CT accurately measures RV volume and function, with an acceptable range of bias and LOA and strong correlation with CMRI findings. The RV-dedicated CT contrast protocol, ≥ 64 CT slices, and use of the same CT volumetry method as CMRI can improve agreement with CMRI.

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CT Assessment of Global and Regional Cardiac Function: State of the Art

Agrawal

Abbara

2013

CT Imaging of Myocardial Perfusion and Viability

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Impact of Ventricular Contrast Medium Attenuation on the Accuracy of Left and Right Ventricular Function Analysis at Cardiac Multi Detector-row CT Compared with Cardiac MRI

Cited by 11 publications

References 24 publications

Estimation of Diastolic Filling Pressure with Cardiac CT in Comparison with Echocardiography Using Tissue Doppler Imaging: Determination of Optimal CT Reconstruction Parameters

Estimation of Diastolic Filling Pressure with Cardiac CT in Comparison with Echocardiography Using Tissue Doppler Imaging: Determination of Optimal CT Reconstruction Parameters

Cardiac CT for Measurement of Right Ventricular Volume and Function in Comparison with Cardiac MRI: A Meta-Analysis

CT Assessment of Global and Regional Cardiac Function: State of the Art

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