High-resolution MR microscopy is advantageous for the human embryo study, but had not been realized because of many challenges. In this study, we demonstrated high-resolution MR microscopy of a human embryo specimen with 18 µm isotropic resolution. To achieve the higher spatial resolution than the previous system, we improved the hardware and optimized the pulse sequence. The MR images of the embryo showed detailed anatomical structures and were similar in appearance to the stained images obtained from an embryo specimen at the same developmental stage.
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