In the A way the radiographer used orthogonal measurement, he excluded a segment of L4 vertebra which generally has higher bone density (BD), moreover he included the T12 vertebra which also has lower BD ; L1-L4 0.903 T -2.4.
In the correct B way he took under consideration the inclination of the L4 vertebra, the new measurement resulted in higher BD ; L1-L4 0.959 T -1.9.
Submitted by : Dr. Vougiouklis Nikolaos
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