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Buzz

  • Overall volume
    • RV volume is <2/3 the volume of LV
    • LA and RA are about 1/3 volume of the RV and LV
    • Peak systole volume in LV and RV should = 1/3 of diastolic volume
  • Shapes
    • LA rectangular with flat back
    • RA flat back
    • LV Ovoid with icecream cone shaped cavity
    • RV triangular shaped and septum bulges into it (?punch in the belly?
  • Linear Size
    • LA +/- 4cms (post wall to MV)
    • LV +/-  5cms (transverse) not >6
    • RV +/- 4cms (transverse) not >6
    • RA +/- 5cms (post wall to TV)
  • Wall thickness
    • Measure in diastole
      • LV 1.2 to 1.4cms
      • RV 3-5mms
NORMAL MRI OF THE HEART in the AXIAL VIEW THROUGH the RV in DIASTOLE WITH MEASUREMENTS
This is the MRI of a 19-year-old male who presented with syncope and the study was performed to identify a possible arrhythmogenic focus
White blood imaging of the RV in the axial projection in diastole shows a transverse diameter of the RV of 2.95cms., (up to 4-5cms) which is normal and an RV wall thickness 4.8mm (normal up to about 5mms. ) The volume of the RV is about 2/3 the size of the LV.
Ashley Davidoff MD