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Comparison of cardiac diffusion MRI using multiple prospective respiratory motion correction techniques.

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Title: Comparison of cardiac diffusion MRI using multiple prospective respiratory motion correction techniques.
Authors: Jermy, Stephen1,2 (AUTHOR) stephen.jermy@uct.ac.za, Hess, Aaron3 (AUTHOR), Ashkir, Zakariye4 (AUTHOR), Raman, Betty4 (AUTHOR), Burger, Ian1 (AUTHOR), Little, Francesca5 (AUTHOR), Ntusi, Ntobeko6,7 (AUTHOR), Meintjes, Ernesta1,2 (AUTHOR), Tunnicliffe, Elizabeth M.4 (AUTHOR)
Source: Magnetic Resonance in Medicine. Jan2026, Vol. 95 Issue 1, p442-456. 15p.
Subjects: Diffusion magnetic resonance imaging, Diffusion tensor imaging, Human research subjects
Abstract: Purpose: A novel prospective motion correction control system with slice tracking (MNav‐CoS) was compared with three other prospective respiratory motion correction techniques in performing free‐breathing cardiovascular diffusion tensor imaging (cDTI) acquisitions. Methods: Ten healthy volunteers underwent cDTI using an M2SE sequence. The performance of the proposed MNav‐CoS was compared with three respiratory compensation techniques: multiple breath‐holds (BH), free breathing with respiratory gating (Gate), and free breathing with single navigator slice tracking (Nav). Data for five diffusion weightings were acquired in a single mid‐ventricular slice in end systole. MD, FA, and HA maps were calculated for each technique and combinations of low and high b‐values. Data from the respiratory navigators were used to estimate the total amount of cardiac through‐plane motion during free breathing. Results: The metrics derived from the diffusion tensor for MNav‐CoS with blow|bhigh = 50|450 s/mm2 were MD: 1.48±0.10μm⁄ms2$$ 1.48\pm 0.10\kern0.3em \upmu \mathrm{m}/{\mathrm{ms}}^2 $$, FA: 0.39±0.07$$ 0.39\pm 0.07 $$, and HAg: −0.82±0.22°⁄%$$ -0.82\pm {0.22}^{{}^{\circ}}/\% $$. All of the other respiratory compensation techniques produced a similar range of results to the MNav‐CoS technique. On average, the free‐breathing acquisitions with slice tracking were three times shorter than using BH. The total amount of cardiac through‐plane motion during the free‐breathing acquisitions ranged from 4 to 10 mm with an average of 6.2±1.7mm$$ 6.2\pm 1.7\kern0.3em \mathrm{mm} $$. Conclusion: The MNav‐CoS technique performed comparably to other commonly used respiratory compensation techniques. Prospective respiratory motion compensation, such as the slice tracking used with MNav‐CoS, is a useful tool that offers time‐saving benefits and compensates for through‐plane motion present during free breathing. These techniques may be beneficial for performing longer cDTI acquisitions providing increased utility in a clinical context. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
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Abstract:Purpose: A novel prospective motion correction control system with slice tracking (MNav‐CoS) was compared with three other prospective respiratory motion correction techniques in performing free‐breathing cardiovascular diffusion tensor imaging (cDTI) acquisitions. Methods: Ten healthy volunteers underwent cDTI using an M2SE sequence. The performance of the proposed MNav‐CoS was compared with three respiratory compensation techniques: multiple breath‐holds (BH), free breathing with respiratory gating (Gate), and free breathing with single navigator slice tracking (Nav). Data for five diffusion weightings were acquired in a single mid‐ventricular slice in end systole. MD, FA, and HA maps were calculated for each technique and combinations of low and high b‐values. Data from the respiratory navigators were used to estimate the total amount of cardiac through‐plane motion during free breathing. Results: The metrics derived from the diffusion tensor for MNav‐CoS with blow|bhigh = 50|450 s/mm2 were MD: 1.48±0.10μm⁄ms2$$ 1.48\pm 0.10\kern0.3em \upmu \mathrm{m}/{\mathrm{ms}}^2 $$, FA: 0.39±0.07$$ 0.39\pm 0.07 $$, and HAg: −0.82±0.22°⁄%$$ -0.82\pm {0.22}^{{}^{\circ}}/\% $$. All of the other respiratory compensation techniques produced a similar range of results to the MNav‐CoS technique. On average, the free‐breathing acquisitions with slice tracking were three times shorter than using BH. The total amount of cardiac through‐plane motion during the free‐breathing acquisitions ranged from 4 to 10 mm with an average of 6.2±1.7mm$$ 6.2\pm 1.7\kern0.3em \mathrm{mm} $$. Conclusion: The MNav‐CoS technique performed comparably to other commonly used respiratory compensation techniques. Prospective respiratory motion compensation, such as the slice tracking used with MNav‐CoS, is a useful tool that offers time‐saving benefits and compensates for through‐plane motion present during free breathing. These techniques may be beneficial for performing longer cDTI acquisitions providing increased utility in a clinical context. [ABSTRACT FROM AUTHOR]
ISSN:07403194
DOI:10.1002/mrm.70061