Critical notes on the technique of Doppler imaging of vibrations (DIV)

Buyruk et al. (1995a) have developed a noninvasive technique, Doppler imaging of vibrations (DIV), to measure objectively the laxity of the sacroiliac (SI) joints. The purpose of the present article was to review this technique. Therefore, all the articles about DIV were carefully studied. The reliability of the technique has been determined by the generalisability theory and seems to be good. The technique has also proven its clinical relevance. However, a thorough study into the validity of the technique is still missing. Such study is considered necessary because relevant assumptions in DIV appear generally not to be correct. Conclusions from the measurements with DIV so far should be drawn with great care.