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Society for Pediatric Radiology – Poster Archive

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Serai Suraj,  Carson Robert,  Venkatesh Tanvi,  Kollasch Peter,  Liu Ke Cheng,  Rajapakse Chamith,  Nguyen Jie

Final Pr. ID: Paper #: 049

Ultra-Short Echo Time (UTE) imaging, characterized by acquisition schemes with Echo Times (TE) of < 1 msec, have enabled new applications of pediatric musculoskeletal (MSK) MRI including cortical bone, tendons and ligaments. The protons in the bone collagen matrix have an effective T2* on the order of 20 – 80 µsec. The UTE sequence consists of a 40 µs long non-selective RF pulse followed by transmit/receive switch time and a 100% asymmetric data, i.e. free induction decay, acquisition from the center to the surface of a sphere. In order to achieve the shortest possible TE, data acquisition starts already during ramp-up time of the readout gradient. The aim of our study was to assess the feasibility and compare two UTE sequences, a prototype 3D UTE with radial koosh-ball acquisition and clinically available pointwise encoding time reduction with radial acquisition (PETRA), in pediatric patients referred for clinical MSK studies. Read More

Authors:  Serai Suraj , Carson Robert , Venkatesh Tanvi , Kollasch Peter , Liu Ke Cheng , Rajapakse Chamith , Nguyen Jie

Keywords:  UTE