[Measurements of storage-induced morphologic changes in preserved blood by means of light scattering].

This study is concerned with changes in diffuse backscattering of white light caused by laminarly streaming or resting banked blood stored for periods up to 7 weeks. The most pronounced changes, i.e. a steep rise of scattering intensity, were found at the beginning of storage. Under streaming conditions such as resulting in a maximum of backscattering and effective disaggregation of rouleaux the temporal changes of scattering intensity obviously were not simply related to morphological properties of the blood. In addition, there was considerable individual variation in the amount of backscattering from various preserves. This invalidates an assessment of banked blood by means of light scattering by a single-data type measurement.