caa a22 4500 551316403 CHVBK 20200106043605.0 cr unu---uuuuu 181213e201901 xx s 000 0 eng 10.1002/mrm.27374 doi (SERVAL)BIB_6FF60768689C 30058085 pmid 000454009000017 isiid Accelerated and high-resolution cardiac T₂ mapping through peripheral k-space sharing [Elektronische Daten] [E. Darçot, J. Yerly, R. Colotti, P.G. Masci, J. Chaptinel, H. Feliciano, V. Bianchi, R.B. van Heeswijk] To develop high-spatial-resolution cardiac T &lt;sub&gt;2&lt;/sub&gt; mapping that allows for a reduced acquisition time while maintaining its precision. We implemented and optimized a new golden-angle radial T &lt;sub&gt;2&lt;/sub&gt; mapping technique named SKRATCH (Shared k-space Radial T &lt;sub&gt;2&lt;/sub&gt; Characterization of the Heart) that shares k-space peripheries of T &lt;sub&gt;2&lt;/sub&gt; -weighted images while preserving their contrasts. Six SKRATCH variants (gradient-recalled echo and balanced SSFP, free-breathing and breath-held, with and without a saturation preparation) were implemented, and their precision was compared with a navigator-gated reference technique in phantoms and 22 healthy volunteers at 3 T. The optimal breath-held SKRATCH technique was applied in a small cohort of patients with subacute myocardial infarction. The faster free-breathing SKRATCH technique reduced the acquisition time by 52.4%, while maintaining the precision and spatial resolution of the reference technique. Similarly, the most precise and robust breath-held SKRATCH technique demonstrated homogenous T &lt;sub&gt;2&lt;/sub&gt; values that did not significantly differ from the navigator-gated reference (T &lt;sub&gt;2&lt;/sub&gt; = 39.9 ± 3.4 ms versus 39.5 ± 3.4 ms, P &gt; .20, respectively). All infarct patients demonstrated a large T &lt;sub&gt;2&lt;/sub&gt; elevation in the ischemic regions of the myocardium. The optimized SKRATCH technique enabled the accelerated acquisition of high-spatial-resolution T &lt;sub&gt;2&lt;/sub&gt; maps, was validated in healthy adult volunteers, and was successfully applied to a small initial group of patients. Darçot E. aut Yerly J. aut Colotti R. aut Masci P.G. aut Chaptinel J. aut Feliciano H. aut Bianchi V. aut van Heeswijk R.B. aut Magnetic resonance in medicine 81/1(2019-01), 220-233 81:1<220-233 2019 81 1 article serval SERVAL 700 1- Darçot E. aut SERVAL 700 1- Yerly J. aut SERVAL 700 1- Colotti R. aut SERVAL 700 1- Masci P.G. aut SERVAL 700 1- Chaptinel J. aut SERVAL 700 1- Feliciano H. aut SERVAL 700 1- Bianchi V. aut SERVAL 700 1- van Heeswijk R.B. aut SERVAL 773 0- Magnetic resonance in medicine 81/1(2019-01), 220-233 81:1<220-233 2019 81 BK010053 XK010053 XK010000 SERVAL SERVAL SERVAL article