OBJECTIVE: To test if three-dimensional (3D) cine spatial frequency-temporal frequency Broad-use Linear Acquisition Speed-up Technique (k-t BLAST) is suitable for rapid evaluation of global and regional left ventricular (LV) functional parameters and to evaluate the influence of gadolinium administration. MATERIALS AND METHODS: Parameters describing global and regional LV function were evaluated in 50 subjects using a two-dimensional (2D) steady-state free precession (SSFP) and pre- and postcontrast 3D k-t BLAST techniques. Data analyses included contrast-to-noise ratio analyses, and statistical evaluations included Bland-Altman, Cohen's kappa and analysis of variance techniques. RESULTS: Bland-Altman analyses revealed that the ejection fraction computed using the 3D k-t BLAST sequences before (bias+/-2S.D., 2.2+/-8.8) and after contrast administration (bias+/-2S.D., 2.7+/-7.6 mol) was comparable to the 2D SSFP technique. Similar agreement was noted for other global LV parameters. The myocardium-to-blood contrast in the apical slices was better in the 3D k-t BLAST sequence after contrast administration than before. Cohen's kappa values demonstrated good agreement between the sequences for evaluating regional wall motion. CONCLUSIONS: 3D k-t BLAST can yield global and regional LV functional parameters comparable to those of the 2D SSFP technique in substantially shorter scan times. In 3D k-t BLAST images, myocardium-to-blood contrast in the apical slices is better after contrast administration.
OBJECTIVE: To test if three-dimensional (3D) cine spatial frequency-temporal frequency Broad-use Linear Acquisition Speed-up Technique (k-t BLAST) is suitable for rapid evaluation of global and regional left ventricular (LV) functional parameters and to evaluate the influence of gadolinium administration. MATERIALS AND METHODS: Parameters describing global and regional LV function were evaluated in 50 subjects using a two-dimensional (2D) steady-state free precession (SSFP) and pre- and postcontrast 3D k-t BLAST techniques. Data analyses included contrast-to-noise ratio analyses, and statistical evaluations included Bland-Altman, Cohen's kappa and analysis of variance techniques. RESULTS: Bland-Altman analyses revealed that the ejection fraction computed using the 3D k-t BLAST sequences before (bias+/-2S.D., 2.2+/-8.8) and after contrast administration (bias+/-2S.D., 2.7+/-7.6 mol) was comparable to the 2D SSFP technique. Similar agreement was noted for other global LV parameters. The myocardium-to-blood contrast in the apical slices was better in the 3D k-t BLAST sequence after contrast administration than before. Cohen's kappa values demonstrated good agreement between the sequences for evaluating regional wall motion. CONCLUSIONS: 3D k-t BLAST can yield global and regional LV functional parameters comparable to those of the 2D SSFP technique in substantially shorter scan times. In 3D k-t BLAST images, myocardium-to-blood contrast in the apical slices is better after contrast administration.
Authors: Daniel Jeong; Mark L Schiebler; Peng Lai; Kang Wang; Karl K Vigen; Christopher J François Journal: Int J Cardiovasc Imaging Date: 2015-02-14 Impact factor: 2.357
Authors: Marcus R Makowski; Andrea J Wiethoff; Hans U Ebersberger; René M Botnar; Reza Razavi; Tobias Schaeffter; Gerald F Greil Journal: Int J Cardiovasc Imaging Date: 2014-11-11 Impact factor: 2.357
Authors: Antonildes Nascimento Assuncao-Jr; Roberto Nery Dantas-Jr; Renata Margarida do Val; Priscilla Gianotto; Angela Dos Santos Marin; Mark Golden; Marco Antonio Gutierrez; Jose Rodrigues Parga; Cesar Higa Nomura Journal: Insights Imaging Date: 2019-06-13
Authors: Marcus R Makowski; Andrea J Wiethoff; Christian H P Jansen; Sergio Uribe; Victoria Parish; Andreas Schuster; Rene M Botnar; Aaron Bell; Christoph Kiesewetter; Reza Razavi; Tobias Schaeffter; Gerald F Greil Journal: J Cardiovasc Magn Reson Date: 2012-07-31 Impact factor: 5.364