A Comparison of Alternative Approaches to MR Cardiac Triggering: A Pilot Study at 3 Tesla
| Authors | |
|---|---|
| Year of publication | 2022 |
| Type | Article in Periodical |
| Magazine / Source | IEEE JOURNAL OF BIOMEDICAL AND HEALTH INFORMATICS |
| MU Faculty or unit | |
| Citation | |
| Web | https://ieeexplore.ieee.org/document/9695180 |
| Doi | http://dx.doi.org/10.1109/JBHI.2022.3146707 |
| Keywords | Electrocardiography; Heart; Synchronization; Magnetohydrodynamics; Magnetic resonance imaging; Image quality; Skin; Alternative sensors; ballistocardiography; fiber-optic sensor; magnetic resonance cardiac triggering; pneumatic sensor |
| Description | This pilot comparative study evaluates the usability of the alternative approaches to magnetic resonance (MR) cardiac triggering based on ballistocardiography (BCG): fiber-optic sensor (O-BCG) and pneumatic sensor (P-BCG). The comparison includes both the objective and subjective assessment of the proposed sensors in comparison with a gold standard of ECG-based triggering. The objective evaluation included several image quality assessment (IQA) parameters, whereas the subjective analysis was performed by 10 experts rating the diagnostic quality (scale 1 - 3, 1 corresponding to the best image quality and 3 the worst one). Moreover, for each examination, we provided the examination time and comfort rating (scale 1 - 3). The study was performed on 10 healthy subjects. All data were acquired on a 3 T SIEMENS MAGNETOM Prisma. In image quality analysis, all approaches reached comparable results, with ECG slightly outperforming the BCG-based methods, especially according to the objective metrics. The subjective evaluation proved the best quality of ECG (average score of 1.68) and higher performance of P-BCG (1.97) than O-BCG (2.03). In terms of the comfort rating and total examination time, the ECG method achieved the worst results, i.e. the highest score and the longest examination time: 2.6 and 10:49 s, respectively. The BCG-based alternatives achieved comparable results (P-BCG 1.5 and 8:06 s; OBCG 1.9, 9:08 s). This study confirmed that the proposed BCG-based alternative approaches to MR cardiac triggering offer comparable quality of resulting images with the benefits of reduced examination time and increased patient comfort. |
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