Stroke volume

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The stroke volume (SV) is referred to as the volume of blood ejected into the aorta or main pulmonary artery during each cardiac cycle.

Terminology

The stroke volume index (SVI) is referred to as the stroke volume corrected for the body surface area (BSA).

Usage

The stroke volume is another integral parameter used for the assessment of cardiac function, the calculation of ejection fraction and cardiac output.

Measurement

MRI

It is derived from the difference between end-diastolic (EDV) and end-systolic volumes (ESV) as:

SV = EDV – ESV [mL]

The stroke volume index (SVI) can be calculated in the same fashion or calculated from stroke volume as:

SVI = SV/BSA [mL/m]

Interpretation

Normal values differ for the left and right ventricle depending on gender and age and with the imaging modality used :

MRI

Normal values are derived for 1.5 tesla from the publication by a meta-analysis from Kawel-Boehm :

Left ventricle

Women (20-80 years):

  • SV [mL]:               57-117 mL
  • SVI [mL/m]:       38-66 mL/m

Men (20-80 years):

  • SV [mL]:               72-144 mL
  • SVI [mL/m]:       42-66 mL/m      
Right ventricle

Women (20-68 years):

  • SV [mL]:               48-120 mL
  • SVI [mL/m]:       35-71 mL/m

Men (20-68 years):

  • SV [mL]:               68-144 mL
  • SVI [mL/m]:       41-73 mL/m

​See also