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Abstract #1411

Quantitative UTE Double Echo Steady State (qUTE-DESS) for Simultaneous Mapping of T1, T2, and Diffusivity of Short T2 Tissues – Ex Vivo Study

Hyungseok Jang1, Yajun Ma1, Amir Masoud-Afsahi1, Saeed Jerban1, Alecio F Lombardi1, Eric Y Chang1,2, Christine B Chung1,2, and Jiang Du1
1Radiology, University of California San Diego, San Diego, CA, United States, 2Radiology Service, Veterans Affairs San Diego Healthcare System, San Diego, CA, United States


Quantitative double echo steady state (DESS) imaging allows simultaneous estimation of T1, T2, and apparent diffusion coefficient (ADC) maps with high spatial resolution. Recently, ultrashort echo time (UTE) based DESS has been investigated targeting short T2 tissues. However, ADC mapping for tissues with short T2 values using DESS is challenging due to the two competing factors: sensitivity to diffusion that requires a long TR and sensitivity to short T2 component that requires a short TR. In this study, the feasibility of using quantitative UTE DESS (qUTE-DESS) to image connective tissues in the knee was investigated.

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