%0 Conference Paper
%A Zhou, Xiangzhi 
%A Rundell, Veronica
%A Liu, Ying
%A Tang, Richard
%A Klein, Rachel
%A Giri, Shivraman
%A Shah, Saurabh
%A Tsaftaris, Sotirios A.
%A Zuehlsdorff, Sven
%A Simonetti, Orlando
%A Li, Debiao
%A Dharmakumar, Rohan
%B 18th Meeting of the international society for magnetic resonance in medicine
%C  Stockholm, Sweden
%D 2010
%F eprints:838
%T On the origin of myocardial edema contrast in T2-STIR images
%U http://eprints.imtlucca.it/838/
%X Acute myocardial infarcts (AMI) are typically discriminated with T2-weighted short TI inversion recovery (STIR) with turbo spin echo (TSE) readouts [1], albeit with limited specificity [2]. Guided by the association that T2-STIR images identify AMI territories on the basis of edema-related T2 changes, even some of the recently proposed improvements [2,3] have relied on preferential sensitization of magnetization to T2- weighting. However, whether T2-STIR imaging itself may also be sensitive to other sources of image contrast have not been fully investigated. We hypothesize that in addition to T2-weighting, edema detection with T2-STIR imaging has substantial weighting from proton density (PD) changes.