A pontine infarct typically has a spheroid shape. The ABC/2 equation can be used to quickly estimate the volume.
Patient selection: pontine infarct with spheroid shape
Measurement: the largest diameter in all 3 perpendicular planes (A, B, C) in brain MRI
volume in cubic cm =
= A * B * C / 2
where:
• The more accurate formula is 4 * PI() / 3 * (A * B * C / 8). The result with this equation is 1.047 times the ABC/2 formula, or the ratio of PI()/3.
