LV Mass and LV Mass Index
Left ventricular mass and left ventricular mass indexed to body surface area estimated by LV cavity dimension and wall thickness at end-diastole.
In a Nutshell
Mass: Normal 90 -100 gm/m2
Method
Evaluation on short axis parallel to the true LV short axis
LV mass is measured at a single time point within the cardiac cycle (the standard is end-diastole)
single breath-hold removes respiratory artifact.
About 10 slices will cover the ventricle,
Simpson?s method (?stack of disks?)
calculated from the
product of the myocardial volume
difference between the epicardial and endocardial LV volumes by a semi-three dimensional data set
specific gravity of heart muscle (1.05 g/ml).
LV MASS EVALUATIONMyerson,S et al Assessment of Left Ventricular Mass by Cardiovascular Magnetic Resonance BSA Calculator
Normal Values have such a wide range depending on sex age and race – Echo and MR measurement are fairly consistent
Females about 60 g/m2 2
LV mass was significantly higher in males compared to females (mean?±?SD of 53?±?9 g/m2 vs 42?±?7 g/m2 ). Petersen et al JCMR
Normal values of LV mass indexed to body surface area were found to be 70 (+/- 6-9 g/m2 in men and 61 (+/- 6 -8 g/m2 in women. Mizukoshi , showed echo and MR good correlation
Normal values of LV mass indexed to body surface area were found to be 60 (+/- 9 g/m2 in men and 49 (+/- 7 g/m2 in women). Fuchs EHJ CV Imaging
Reference Ranges & Partition Values for LV Mass Indexed To BSA (g/m2 )
Female
Male
Reference Range
43-95
49-115
Mildly Abnormal
96-108
116-131
Moderately Abnormal
109-121
132-148
Severely Abnormal
?122
?149
Chuang, et al Manning CMR Reference Values for Left Ventricular Volumes, Mass and Ejection Fraction Using Computer-Aided Analysis: The Framingham Heart Study JMRI
Mizukoshi , Left ventricular mass quantitation using single-phase cardiac magnetic resonance imaging. Am J Cardiol.
Mizukoshi , MD, et al CLINICAL INVESTIGATIONS
https://youtu.be/kfoarygFZvA
See Map of Left Ventricle
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Female
Male
Reference Range
43-95
49-115
Mildly Abnormal
96-108
116-131
Moderately Abnormal
109-121
132-148
Severely Abnormal
?122
?149
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Female
Male
Reference Range
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49-115
Mildly Abnormal
96-108
116-131
Moderately Abnormal
109-121
132-148
Severely Abnormal
?122
?149
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