[Determining global heart function with real time TrueFISP in one respiratory cycle].
Real-time multislice cine techniques lead to inaccurate results in ventricular volumes based on limited temporal resolution. The purpose of the study is to evaluate a real-time cine technique with parallel imaging algorithms in comparison to standard segmented techniques. Twelve patients underwent cardiac cine MRI using real-time multislice cine trueFISP. Temporal resolution was improved using parallel acquisition techniques (iPAT) and data acquisition was performed in a single breath-hold along the patients' short axis. Evaluation of EDV, ESV, EF and myocardial mass was performed and results compared to a standard segmented single-slice cine trueFISP. Combination of real-time cine trueFISP and iPAT provided a temporal resolution of 48 ms. Results of the multislice approach showed an excellent correlation to standard single-slice trueFISP for EDV (0.94, p <0.001), ESV (0.97, p <0.001) EF (0.99, p <0.001) and myocardial mass (0.93, p <0.001). No significant differences could be found. The use of parallel acquisition techniques (PAT) allow for a substantial improvement of temporal resolution in real-time cine MRI (<50 ms). Therefore these techniques enable an accurate and exact quantification of global ventricular function.
Institut für Klinische Radiologie, Klinikum der Universität München - Standort Grosshadern. Bernd.Wintersperger@med.uni-muenchen.de
B J
BJ
Wintersperger
K
K
Nikolaou
O
O
Mühling
A
A
Huber
O
O
Dietrich
M
M
Nittka
B
B
Kiefer
M F
MF
Reiser
S O
SO
Schoenberg
D000465:Algorithms; D002306:Cardiac Volume / Q000502:physiology; D004562:Electrocardiography; D006334:Heart Function Tests; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted; D019028:Magnetic Resonance Imaging, Cine; D009203:Myocardial Infarction / Q000175:diagnosis / Q000503:physiopathology; D010494:Pericarditis, Constrictive / Q000175:diagnosis / Q000503:physiopathology; D012119:Respiration; D012680:Sensitivity and Specificity; D018487:Ventricular Dysfunction, Left / Q000175:diagnosis* / Q000503:physiopathology; D016277:Ventricular Function, Left / Q000502:physiology