Abstract #5085

Repeatability of ProMyoT1: an open-source inversion recovery myocardial T1 mapping sequence for fast prototyping

Andreia S Gaspar¹, Nuno A Silva², António M Ferreira^3,4, and Rita G Nunes¹

¹Institute for Systems and Robotics - Lisboa and Department of Bioengineering, Instituto Superior Técnico – Universidade de Lisboa, Lisbon, Portugal, ²Hospital da Luz Learning Health, Luz Saúde, Lisbon, Portugal, ³Serviço de Cardiologia, Hospital de Santa Cruz, Centro Hospitalar Lisboa Ocidental, Lisbon, Portugal, ⁴Unidade de Imagiologia Cardíaca Avançada, Hospital da Luz, Lisbon, Portugal

Synopsis

Keywords: Quantitative Imaging, Heart, T1 mappingThe open-source method Prototype of Myocardial T1 mapping (ProMyoT1) created with Pulseq was tested in vivo in healthy subjects to evaluate its repeatability and compare its performance with that of the clinical MOLLI method. ProMyoT1 provided myocardium T1 values similar to those obtained with MOLLI. The precision was better for MOLLI, but the repeatability measures (Coefficient of Variation and Repeatability Coefficient) were similar in both methods. The developed ProMyoT1 method was shown to be reliable and should improve the accessibility to T1 mapping, while also enabling fast sequence prototyping so that further improvements can easily be tested.

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