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Abstract #1832

Enhancing bSSFP cine imaging in cardiac device patients with twofold phase cycling and cross-attention transformer network

Zhuo Chen1, Haiyang Chen1, Yixin Emu1, Juan Gao1, Xin Tang2, Junpu Hu2, Weixiong Fan3, and Chenxi Hu1
1Shanghai Jiao Tong University, Shanghai, China, 2United Imaging Healthcare Co., Ltd, Shanghai, China, 3Department of Magnetic Resonance,Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou People's Hospital, Meizhou, China

Synopsis

Keywords: Artifacts, Cardiovascular, Cardiac function, off-resonance artifacts, CIED

Motivation: Patients with cardiovascular implantable electronic devices (CIED) experience significant off-resonance using bSSFP imaging, leading to artifacts that hinder accurate analysis of cardiac function.

Goal(s): To enhance bSSFP cine imaging for patients with cardiac implants at 3T by employing a twofold phase cycling and cross-attention transformer network.

Approach: We developed a cross-attention transformer network to process two phase-cycled images and produce artifact-suppressed output. This method was evaluated on 9 healthy subjects with an extracorporeal cardioverter-defibrillator (ICD) positioned at the left chest.

Results: Our method reduced off-resonance artifacts, thereby enhancing the quality of bSSFP images.

Impact: Our method considerably increases the feasibility of bSSFP imaging in CIED patients at high fields.

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Keywords