[MR tomographic functional analysis of the left ventricle].
The following contribution presents a continuous MRT analysis of the contraction and relaxation processes of healthy left ventricles giving reference values for contraction and relaxation velocities. For the total ventricle we have Vsyst. r. total = 342 +/- 47% LVEDV/sec and Vdiast. r. total = 303 +/- 59% LVEDV/sec. In relation to the end-diastolic (tomographic) volume (EDSV) significantly greater changes in volume per unit of time were measured apically compared to basal (systolic: 411 +/- 89% EDSV/sec apical vs 261 +/- 35% EDSV/sec basal; diastolic: 810 +/- 145% EDSV/sec apical vs 245 +/- 70% EDSV/sec basal). Occurrence of the end-systolic minimal volumes of apical tomographic layers was delayed against the total ventricle by 22.4 +/- 7.9% t syst. Within the ventricle there was systolically a redistribution of the proportions of volume from apical to basal.
Pitton
M B
MB
Klinik und Poliklinik für Radiologie, Universität Mainz.
Just
M
M
Grebe
P
P
Kreitner
K F
KF
Erbel
R
R
Thelen
M
M
D000328:Adult; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009200:Myocardial Contraction / Q000502:physiology*; D012016:Reference Values; D016277:Ventricular Function, Left / Q000502:physiology*
MR-tomographische Funktionsanalyse des linken Ventrikels.