On the optimal temporal resolution for phase contrast cardiovascular magnetic resonance imaging: establishment of baseline values.
Adult
Aged
Aged, 80 and over
Aorta
/ diagnostic imaging
Blood Flow Velocity
Cardiovascular Diseases
/ diagnostic imaging
Carotid Arteries
/ diagnostic imaging
Female
Femoral Artery
/ diagnostic imaging
Humans
Magnetic Resonance Imaging
Male
Middle Aged
Predictive Value of Tests
Regional Blood Flow
Retrospective Studies
Time Factors
Ultrasonography, Doppler
Young Adult
Doppler ultrasound
Frequency content
Phase contrast MRI
Temporal resolution
Journal
Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance
ISSN: 1532-429X
Titre abrégé: J Cardiovasc Magn Reson
Pays: England
ID NLM: 9815616
Informations de publication
Date de publication:
05 10 2020
05 10 2020
Historique:
received:
14
10
2019
accepted:
08
09
2020
entrez:
5
10
2020
pubmed:
6
10
2020
medline:
15
12
2020
Statut:
epublish
Résumé
The aim of this study is to quantify the frequency content of the blood velocity waveform in different body regions by means of phase contrast (PC) cardiovascular magnetic resonance (CMR) and Doppler ultrasound. The highest frequency component of the spectrum is inversely proportional to the ideal temporal resolution to be used for the acquisition of flow-sensitive imaging (Shannon-Nyquist theorem). Ten healthy subjects (median age 33y, range 24-40) were scanned with a high-temporal-resolution PC-CMR and with Doppler ultrasound on three body regions (carotid arteries, aorta and femoral arteries). Furthermore, 111 patients (median age 61y) with mild to moderate arterial hypertension and 58 patients with aortic aregurgitation, atrial septal defect, or repaired tetralogy of Fallot underwent aortic CMR scanning. The frequency power distribution was calculated for each location and the maximum frequency component, f In the healthy subject cohort, significantly different f The temporal resolution of PC-CMR acquisitions can be adapted based on the scanned body region and in the adult population, should approach approximately 20 ms in the peripheral arteries and 40 ms in the aorta. This study presents results from a restrospective analysis of the clinical study NCT01870739 (ClinicalTrials.gov).
Sections du résumé
BACKGROUND
The aim of this study is to quantify the frequency content of the blood velocity waveform in different body regions by means of phase contrast (PC) cardiovascular magnetic resonance (CMR) and Doppler ultrasound. The highest frequency component of the spectrum is inversely proportional to the ideal temporal resolution to be used for the acquisition of flow-sensitive imaging (Shannon-Nyquist theorem).
METHODS
Ten healthy subjects (median age 33y, range 24-40) were scanned with a high-temporal-resolution PC-CMR and with Doppler ultrasound on three body regions (carotid arteries, aorta and femoral arteries). Furthermore, 111 patients (median age 61y) with mild to moderate arterial hypertension and 58 patients with aortic aregurgitation, atrial septal defect, or repaired tetralogy of Fallot underwent aortic CMR scanning. The frequency power distribution was calculated for each location and the maximum frequency component, f
RESULTS
In the healthy subject cohort, significantly different f
CONCLUSIONS
The temporal resolution of PC-CMR acquisitions can be adapted based on the scanned body region and in the adult population, should approach approximately 20 ms in the peripheral arteries and 40 ms in the aorta.
TRIAL REGISTRATION
This study presents results from a restrospective analysis of the clinical study NCT01870739 (ClinicalTrials.gov).
Identifiants
pubmed: 33012283
doi: 10.1186/s12968-020-00669-1
pii: 10.1186/s12968-020-00669-1
pmc: PMC7534161
doi:
Banques de données
ClinicalTrials.gov
['NCT01870739']
Types de publication
Comparative Study
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
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