In order to bring you the best possible user experience, this site uses Javascript. If you are seeing this message, it is likely that the Javascript option in your browser is disabled. For optimal viewing of this site, please ensure that Javascript is enabled for your browser.


The free consultation period for this content is over.

It is now only available year-round to EACVI Silver Members, Fellows of the ESC and Young combined Members

Feature tracking cardiac magnetic resonance of the right ventricle: effect of resolution, field strength and imaging sequence

Session Poster session 1

Speaker Mimount Bourfiss

Congress : EuroCMR 2019

  • Topic : imaging
  • Sub-topic : Cardiac Magnetic Resonance: Deformation Imaging
  • Session type : Poster Session
  • FP Number : P160

Authors : M Bourfiss (Utrecht,NL), BR Steensma (Utrecht,NL), ASJM Te Riele (Utrecht,NL), T Leiner (Utrecht,NL), BK Velthuis (Utrecht,NL), AJE Raaijmakers (Utrecht,NL)

Authors:
M Bourfiss1 , BR Steensma2 , ASJM Te Riele1 , T Leiner2 , BK Velthuis2 , AJE Raaijmakers2 , 1University Medical Center Utrecht, Cardiology - Utrecht - Netherlands (The) , 2University Medical Center Utrecht, Radiology - Utrecht - Netherlands (The) ,

Citation:
European Heart Journal - Cardiovascular Imaging ( 2019 ) 20 ( Supplement 2 ), ii116

Introduction: Feature tracking cardiac magnetic resonance imaging (FT-CMR) is increasingly used for strain assessment of the right ventricle (RV). However, the complex RV anatomy and contraction pattern challenge detection of subtle wall motion abnormalities. Enhanced image quality may improve diagnostic performance of FT-CMR. 

Purpose: To analyze the influence of spatial resolution, field strength and imaging sequence on the quantification of RV wall motion using FT-CMR. 

Methods: Cine CMR images (Philips) were acquired in 10 healthy volunteers (mean age 28±4 yrs and 60% male). We used two acquisition methods (balanced Steady State Free Precession [bSSFP] on 1.5T and 3T [not possible on 7T] and Fast Low Angle Shot [FLASH] on 3T and 7T) at increasing resolution (Table 1). FT-CMR (Medis) was performed on RV 4-chamber axis to calculate mean and regional longitudinal strain. Correlations between resolutions (1.7x1.7x8mm³ vs. 1.3x1.3x8mm³ and vs. 2x2x10mm³); imaging sequences (bSSFP vs. FLASH); and field strengths (3T vs. 1.5T and 3T vs. 7T), were calculated using Spearman’s Rho (rs). One variable was altered for every comparison separately. 

Results: Comparing resolution on 1.5T, a moderate correlation was seen between mean strain values at lower (1.3x1.3x8 mm³) and higher (2x2x10 mm³) resolution compared to the standard resolution (1.7x1.7x8 mm3) (rs 0.69 [p=0.03] and rs 0.56 [p=0.09] respectively). For regional strain, this differed per region (rs 0.30-0.87), with the strongest correlation in the subtricuspid region (rs=0.83, p=0.003). Comparing field strengths, 1.5T and 3T bSSFP images showed a good correlation of mean RV strain (-22±5% and -21±6%, respectively; rs 0.78 [p=0.02]), but a poor correlation of regional strain (rs=0.24). In contrast, 3T and 7T FLASH images, showed poor correlation for mean RV strain (rs -0.18 [p=0.70]). For regional strain, this differed per region (rs -0.54-0.79), with a good correlation (rs 0.79 p<0.04) for the subtricuspid region. Comparing image sequence on 3T, a poor correlation was observed between bSSFP and FLASH (rs 0.14-0.49). 

Conclusion: This study illustrates how imaging parameters influence RV FT-CMR. Both global and regional strain values are influenced by imaging sequence, but to a lesser extent by the spatial resolution. Furthermore, mean strain values on 3T correlate with 1.5T, but not with 7T.

Field strength/sequence

1.5T/bSSFP

3T/bSSFP

3T/FLASH

7T/FLASH

Resolution 1 (mm³)

2.0x2.0x10.0

2.0x2.0x10.0

2.0x2.0x10.0

-

Resolution 2 (mm³)

1.7x1.7x8.0

1.7x1.7x8.0

1.7x1.7x8.0

-

Resolution 3 (mm³)

1.3x1.3x8.0

1.3x1.3x8.0

1.3x1.3x8.0

1.3x1.3x8.0



Based on your interests

Members get more

Join now
  • 1ESC Professional Members – access all resources from ESC Congress and ESC Asia with APSC & AFC
  • 2ESC Association Members (Ivory, Silver, Gold) – access your Association’s congress resources
  • 3Under 40 or in training - with a Combined Membership, access resources from all congresses
Join now

Our sponsors

ESC 365 is supported by Bayer, Boehringer Ingelheim and Lilly Alliance, Bristol-Myers Squibb and Pfizer Alliance, Novartis Pharma AG and Vifor Pharma in the form of educational grants. The sponsors were not involved in the development of this platform and had no influence on its content.

logo esc

Our mission: To reduce the burden of cardiovascular disease

Who we are