TY - RPRT TI - Doppler perfusion index: an interobserver and intraobserver reproducibility study. AU - K Oppo AU - E Leen AU - W J Angerson AU - T G Cooke AU - C S McArdle PY - 1998 DO - 10.1148/radiology.208.2.9680575 UR - https://pubmed.ncbi.nlm.nih.gov/9680575/ ID - 9680575 ER -