Cardiovascular magnetic resonance parameters associated with early transplant-free survival in children with small left hearts following conversion from a univentricular to biventricular circulation.

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Abstract

We sought to identify cardiovascular magnetic resonance (CMR) parameters associated with successful univentricular to biventricular conversion in patients with small left hearts.

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Most cited references 27

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Guidelines and standards for performance of a pediatric echocardiogram: a report from the Task Force of the Pediatric Council of the American Society of Echocardiography.

Wyman W Lai, Tal Geva, Girish Shirali … (2006)

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Mitral valve and tricuspid valve blood flow: accurate quantification with 3D velocity-encoded MR imaging with retrospective valve tracking.

Jos Westenberg, Stijntje D Roes, Jeroen J. Bax … (2008)

To validate flow assessment performed with three-dimensional (3D) three-directional velocity-encoded (VE) magnetic resonance (MR) imaging with retrospective valve tracking and to compare this modality with conventional two-dimensional (2D) one-directional VE MR imaging in healthy subjects and patients with regurgitation. Patients and volunteers gave informed consent, and local medical ethics committee approval was obtained. Patient data were selected retrospectively and randomly from a database of MR studies obtained between July 2006 and July 2007. The 3D three-directional VE MR images were first validated in vitro and compared with 2D one-directional VE MR images. Mitral valve (MV) and tricuspid valve (TV) flow were assessed in 10 volunteers without valve insufficiency and 20 patients with valve insufficiency, with aortic systolic stroke volume (ASSV) as the reference standard. Phantom validation showed less than 5% error for both techniques. In volunteers, 3D three-directional VE MR images showed no bias for MV or TV flow when compared with ASSV, whereas 2D one-directional VE MR images showed significant bias for MV flow (15% overestimation, P < .01). TV flow showed 25% overestimation; however, this was insignificant because of the high standard deviation. Correlation with ASSV was strong for 3D three-directional VE MR imaging (r = 0.96, P < .01 for MV flow; r = 0.88, P < .01 for TV flow) and between MV and TV flow (r = 0.91, P < .01); however, correlation was weaker for 2D one-directional VE MR imaging (r = 0.80, P < .01 for MV flow; r = 0.22, P = .55 for TV flow) and between MV flow and TV flow (r = 0.34, P = .34). In patients (mean regurgitation fractions of 13% and 10% for MV flow and TV flow, respectively), correlation between MV flow and TV flow for 3D three-directional VE MR imaging was strong (r = 0.97, P < .01). Use of 3D three-directional VE MR imaging enables accurate MV and TV flow quantification, even in patients with valve regurgitation. RSNA, 2008

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Normal right- and left ventricular volumes and myocardial mass in children measured by steady state free precession cardiovascular magnetic resonance

Emanuela Valsangiacomo Buechel, Thomas Kaiser, Clare Jackson … (2009)

Background Quantification of ventricular volume by Steady State Free Precession (SSFP) cardiovascular magnetic resonance is accurate and reproducible. Normal values exist for adults, but are lacking for children. We sought to establish normal values for left and right ventricular volumes, mass and function in healthy children by using SSFP. Methods and results Fifty children (27 females, 23 males) without cardiovascular disease were evaluated. Median age was 11 years (range 7 months – 18 years), weight 35 kg (range 7–77 kg), height 146 cm (range 66–181 cm). Thirty-six examinations were performed with breath holding, 14 in freely breathing sedated children. Ventricular volumes and mass were measured in the end systolic and end diastolic phase on SSFP cine images acquired in a short axis plane as a stack of 12 contiguous slices covering full length of both ventricles. Regression analysis showed an exponential relationship between body surface area (BSA) and ventricular volumes and mass (normal value = a*BSAb ). Normative curves for males and females are presented in relation to BSA for the enddiastolic volume, endsystolic volume and mass of both ventricles. Intra- and interobserver variability of the measurements was within the limits of 2% and 7% respectively, except for right ventricular mass (10%). Conclusion The exponential equation for calculation of normal values for each ventricular parameter and graphical display of normative curves for data acquired in healthy children by SSFP cardiovascular magnetic resonance are provided.

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Journal

Journal ID (iso-abbrev): J Cardiovasc Magn Reson

Title: Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance

Publisher: Springer Nature

ISSN (Electronic): 1532-429X

ISSN (Print): 1097-6647

Publication date (Electronic): Oct 07 2014

Volume: 16

Affiliations

[1 ] Department of Cardiology, Boston Children's Hospital, 300 Longwood Ave, Boston, MA, 02115, USA. puja.banka@cardio.chboston.org.

[2 ] Department of Pediatrics, Harvard Medical School, Boston, MA, USA. puja.banka@cardio.chboston.org.

[3 ] Department of Cardiology, Boston Children's Hospital, 300 Longwood Ave, Boston, MA, 02115, USA. barbara.schaetzle@hotmail.com.

[4 ] Department of Pediatrics, Harvard Medical School, Boston, MA, USA. barbara.schaetzle@hotmail.com.

[5 ] Current address: Kantonsspital Winterthur, Winterthur, Switzerland. barbara.schaetzle@hotmail.com.

[6 ] Department of Cardiology, Boston Children's Hospital, 300 Longwood Ave, Boston, MA, 02115, USA. rukmini.komarlu@cardio.chboston.org.

[7 ] Department of Pediatrics, Harvard Medical School, Boston, MA, USA. rukmini.komarlu@cardio.chboston.org.

[8 ] Current address: Department of Pediatric Cardiology, Cleveland Clinic, Cleveland, OH, USA. rukmini.komarlu@cardio.chboston.org.

[9 ] Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Ave, Boston, MA, 02115, USA. sitaram.emani@cardio.chboston.org.

[10 ] Department of Surgery, Harvard Medical School, Boston, MA, USA. sitaram.emani@cardio.chboston.org.

[11 ] Department of Cardiology, Boston Children's Hospital, 300 Longwood Ave, Boston, MA, 02115, USA. tal.geva@cardio.chboston.org.

[12 ] Department of Pediatrics, Harvard Medical School, Boston, MA, USA. tal.geva@cardio.chboston.org.

[13 ] Department of Cardiology, Boston Children's Hospital, 300 Longwood Ave, Boston, MA, 02115, USA. andrew.powell@cardio.chboston.org.

[14 ] Department of Pediatrics, Harvard Medical School, Boston, MA, USA. andrew.powell@cardio.chboston.org.

Article

Publisher Item ID: s12968-014-0073-1

DOI: 10.1186/s12968-014-0073-1

PMC ID: 4189673

PubMed ID: 25314952

SO-VID: eaffbb57-d56b-4536-b01e-15681a961bca

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Cardiovascular magnetic resonance parameters associated with early transplant-free survival in children with small left hearts following conversion from a univentricular to biventricular circulation.

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Cardiovascular Innovations and Applications

Most cited references 27

Guidelines and standards for performance of a pediatric echocardiogram: a report from the Task Force of the Pediatric Council of the American Society of Echocardiography.

Mitral valve and tricuspid valve blood flow: accurate quantification with 3D velocity-encoded MR imaging with retrospective valve tracking.

Normal right- and left ventricular volumes and myocardial mass in children measured by steady state free precession cardiovascular magnetic resonance

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Cited by 6

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