Keywords: Hybrid & Novel Systems Technology, Motion Correction, Cardiovascular
Motivation: Beat Pilot Tone (BPT) has been proposed as a non-contact and accurate cardiac sensing method seamlessly integrated with MR systems. However, BPT is sensitive to interference, thereby limiting its ability to robustly obtain fine-grained cardiac waveform.
Goal(s): Our goal was to demonstrate main factors that could lead to corrupted BPT signal.
Approach: We conducted a series of comparative experiments on the hypothesized influencing factors.
Results: The experiments suggested that BPT transmit power, imaging orientation and other physiological motion like respiration caused varying degradation to the BPT signal.
Impact: The demonstration of interfering factors of BPT cardiac sensing could guide the correct BPT setup and interference suppression method design. This helps BPT to robustly obtain fine-grained cardiac waveform, which could be used for MR motion correction and clinical diagnosis.
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