Universität zu Köln

Jaeger, Elena, Sonnabend, Kristina ORCID: 0000-0003-3064-0247, Schaarschmidt, Frank, Maintz, David, Weiss, Kilian and Bunck, Alexander C. (2020). Compressed-sensing accelerated 4D flow MRI of cerebrospinal fluid dynamics. Fluids Barriers CNS, 17 (1). LONDON: BMC. ISSN 2045-8118

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Abstract

Background 4D flow magnetic resonance imaging (MRI) of CSF can make an important contribution to the understanding of hydrodynamic changes in various neurological diseases but remains limited in clinical application due to long acquisition times. The aim of this study was to evaluate the accuracy of compressed SENSE accelerated MRI measurements of the spinal CSF flow. Methods In 20 healthy subjects 4D flow MRI of the CSF in the cervical spine was acquired using compressed sensitivity encoding [CSE, a combination of compressed sensing and parallel imaging (SENSE) provided by the manufacturer] with acceleration factors between 4 and 10. A conventional scan using SENSE was used as reference. Extracted parameters were peak velocity, absolute net flow, forward flow and backward flow. Bland-Altman analysis was performed to determine the scan-rescan reproducibility and the agreement between SENSE and compressed SENSE. Additionally, a time accumulated flow error was calculated. In one additional subject flow of the spinal canal at the level of the entire spinal cord was assessed. Results Averaged acquisition times were 10:21 min (SENSE), 9:31 min (CSE4), 6:25 min (CSE6), 4:53 min (CSE8) and 3:51 min (CSE10). Acquisition of the CSF flow surrounding the entire spinal cord took 14:40 min. Bland-Altman analysis showed good agreement for peak velocity, but slight overestimations for absolute net flow, forward flow and backward flow (< 1 ml/min) in CSE4-8. Results of the accumulated flow error were similar for CSE4 to CSE8. Conclusion A quantitative analysis of acceleration factors CSE4-10 showed that CSE with an acceleration factor up to 6 is feasible. This allows a scan time reduction of 40% and enables the acquisition and analysis of the CSF flow dynamics surrounding the entire spinal cord within a clinically acceptable scan time.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Jaeger, Elena UNSPECIFIED UNSPECIFIED UNSPECIFIED Sonnabend, Kristina UNSPECIFIED orcid.org/0000-0003-3064-0247 UNSPECIFIED Schaarschmidt, Frank UNSPECIFIED UNSPECIFIED UNSPECIFIED Maintz, David UNSPECIFIED UNSPECIFIED UNSPECIFIED Weiss, Kilian UNSPECIFIED UNSPECIFIED UNSPECIFIED Bunck, Alexander C. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-326245
DOI:	10.1186/s12987-020-00206-3
Journal or Publication Title:	Fluids Barriers CNS
Volume:	17
Number:	1
Date:	2020
Publisher:	BMC
Place of Publication:	LONDON
ISSN:	2045-8118
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CHIARI I MALFORMATION; PHASE; VELOCITY; RESPIRATION; VALIDATION; PULSATIONS; SPARSITY Multiple languages Neurosciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/32624