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Fetal 4D flow MRI of the great thoracic vessels at 3 Tesla using Doppler-ultrasound gating: a feasibility study

Knapp, J. ; Tavares de Sousa, M. ; Lenz, A. ; Herrmann, J. ; Zhang, S. ; Kording, F. ; Hergert, B. ; Adam, G. ; Bannas, P. ; Schoennagel, B. P.

European radiology, 2023-03, Vol.33 (3), p.1698-1706 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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Título:
Fetal 4D flow MRI of the great thoracic vessels at 3 Tesla using Doppler-ultrasound gating: a feasibility study
Autor: Knapp, J. ; Tavares de Sousa, M. ; Lenz, A. ; Herrmann, J. ; Zhang, S. ; Kording, F. ; Hergert, B. ; Adam, G. ; Bannas, P. ; Schoennagel, B. P.
Assuntos: Anomalies ; Aorta ; Aorta, Thoracic ; Average velocity ; Blood flow ; Blood Flow Velocity - physiology ; Blood vessels ; Coronary vessels ; Diagnostic Radiology ; Doppler effect ; Evaluation ; Feasibility Studies ; Female ; Fetal Heart - diagnostic imaging ; Fetal Heart - physiology ; Fetuses ; Flow distribution ; Gating ; Gestational Age ; Heart ; Hemodynamics ; Humans ; Imaging ; Internal Medicine ; Interventional Radiology ; Magnetic Resonance ; Magnetic Resonance Imaging ; Medicine ; Medicine & Public Health ; Neuroradiology ; Pregnancy ; Pulmonary arteries ; Pulmonary artery ; Pulmonary Artery - diagnostic imaging ; Radiology ; Thorax ; Ultrasonic imaging ; Ultrasound ; Velocity ; Visualization ; Waveforms
É parte de: European radiology, 2023-03, Vol.33 (3), p.1698-1706
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
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Descrição: Objectives To evaluate the feasibility of Doppler-ultrasound (DUS)-gated 4D flow MRI of the fetal great thoracic vessels at 3T in a clinical setting. Methods Sixteen consecutive fetuses (range 30 +4 –38 +5 weeks) with ( n = 11) and without ( n = 5) cardiovascular anomalies underwent 4D flow MRI of the great thoracic vessels at 3T. Direct fetal cardiac gating was obtained using a MR-compatible DUS device. 4D flow MRI–based visualisation and quantification of four target regions (ascending aorta (AAo), descending aorta (DAo), main pulmonary artery (MPA), and ductus arteriosus (DA)) were performed using dedicated software. Results Fetal 4D flow MRI of the great thoracic vessels was successful in 12/16 fetuses (75%) by adopting clinical 4D flow MR protocols in combination with direct fetal cardiac DUS-gating. Four datasets were excluded due to artefacts by fetal movement or maternal breathing. 4D flow MRI–derived time-velocity curves revealed typical arterial blood flow patterns in the aorta. 4D flow quantification was achieved for the pre-defined target regions. Average velocity and flow volume were 21.1 ± 5.2 cm/s and 6.0 ± 3.1 mL/s in the AAo, 24.3 ± 6.7 cm/s and 8.4 ± 3.7 mL/s in the DAo, 21.9 ± 6.4 cm/s and 7.8 ± 4.2 mL/s in the MPA, and 23.4 ± 4.7 cm/s and 5.9 ± 3.6 mL/s in the DA, respectively. Conclusions Combination of DUS-gating of the fetal heart and 4D flow MRI allows comprehensive visualisation and quantification of haemodynamics in the fetal great thoracic vessels. DUS-gated fetal 4D flow MRI may provide a new diagnostic approach for prenatal assessment of blood flow haemodynamics. Key Points • Fetal cardiac Doppler-ultrasound (DUS) gating and 4D flow MRI can be successfully combined . • DUS-gated fetal 4D flow MRI allowed visualisation and evaluation of streamline directionality, illustration of blood flow variations, and pulsatile arterial waveforms in the target vessels . • 4D flow MRI–based visualisation and quantification of the fetal great thoracic vessels were successful and flow metrics agreed with echocardiographic reference values .
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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Fetal 4D flow MRI of the great thoracic vessels at 3 Tesla using Doppler-ultrasound gating: a feasibility study

Knapp, J. ; Tavares de Sousa, M. ; Lenz, A. ; Herrmann, J. ; Zhang, S. ; Kording, F. ; Hergert, B. ; Adam, G. ; Bannas, P. ; Schoennagel, B. P.

Berlin/Heidelberg: Springer Berlin Heidelberg

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