New technology may, in time, supersede orthoroentgenograms for measurement of leg length inequalities. Micro-Dose digital scans are a new form of radiographs that require 1% of the radiation needed to produce conventional images. The Micro-Dose digital scan and orthoroentgenogram were compared in a clinical series of 25 children and in cadaveric femoral measurements. The accuracy of digital radiographs for this application was confirmed.
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Altongy et al. (1987) studied this question.