Pub Date : 2024-04-02DOI: 10.1109/TRPMS.2024.3380109
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Pub Date : 2024-04-02DOI: 10.1109/TRPMS.2024.3380107
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Pub Date : 2024-04-02DOI: 10.1109/TRPMS.2024.3381311
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Pub Date : 2024-04-02DOI: 10.1109/TRPMS.2024.3381309
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Accurate reorientation and segmentation of the left ventricular (LV) is essential for the quantitative analysis of myocardial perfusion imaging (MPI). This study proposes an end-to-end model, named as multiscale spatial transformer UNet (MS-ST-UNet), which involves the multiscale spatial transformer network (MSSTN) and multiscale UNet (MSUNet) modules to perform simultaneous reorientation and segmentation of LV region from nuclear cardiac images. The multiscale sampler produces images with varying resolutions, while scale transformer (ST) blocks are employed to align the scales of features. The proposed method is trained and tested using two different nuclear cardiac image modalities: $^{13}text{N}$