gentle 发表于 2025-3-25 06:12:03
https://doi.org/10.1007/978-3-642-30699-0 the image encoding and reconstruction process image aliasing in the phase encoding direction and image aliasing (or residual fold-over) that occurs with parallel imaging; Motion artefacts including image ghosting due to respiratory motion, image ghosting caused by pulsatile blood flow and flow-rela感情 发表于 2025-3-25 09:29:52
https://doi.org/10.1007/978-3-642-30699-0hat at 1.5 T. In general, this can be traded for an increase in spatial resolution or in combination with parallel imaging it can be used to allow a reduction in image acquisition time or to improve the temporal resolution of functional imaging techniques. T1 relaxation times are significantly incre朦胧 发表于 2025-3-25 13:45:11
sts in particular, CMR imaging will become a routine diagnostic tool and training curricula in Cardiology or Radiology reflect this trend by increasingly demanding training in CMR imaging.978-3-319-20939-5978-3-319-20940-1用手捏 发表于 2025-3-25 17:58:17
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https://doi.org/10.1007/978-3-642-30696-9. Access is also restricted to prevent accidents caused by ferromagnetic objects being attracted by the magnet and becoming projectiles. Specific items should be identified as being safe, unsafe or conditional using an international labelling system. Most commercially available magnets use active sh音乐等 发表于 2025-3-26 01:14:00
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https://doi.org/10.1007/978-3-642-30699-0reasing receiver bandwidth leads to faster echo sampling, shorter TE and TR hence shorter image acquisition time, but reduces SNR. In comparison to 2D imaging, 3D imaging allows thinner, contiguous slices to be acquired with improved SNR but with a longer acquisition time.