Does the Ahlberg method differ from the Dodge method in calculating left ventricular volume and ejection fraction in patients undergoing single plane cine left ventriculography?
The Ahlberg and Dodge methods provide comparable measurements for left ventricular volume and ejection fraction, but the Ahlberg method is substantially more time-consuming for manual calculation.
Single plane cine left ventriculography was performed in 24 patients, 12 with normal and 12 with abnormal ventricular shapes. End diastolic and systolic volume and ejection fractions were calculated by two methods (Ahlberg and Dodge). The volumes and ejection fraction from either method were not significantly different. If calculated manually, the Ahlberg method took ten times longer than the Dodge method. At present some steps are difficult but a computer can perform the measurements and calculations, and print the results for ventricular areas.
Beránek et al. (Fri,) studied this question.