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Eight whole stomachs from Sprague\u2013Dawley rats were stained with phosphotungstic acid (PTA) and imaged using a SkyScan 1172 CT scanner. Following segmentation of the mucosal\u2010submucosal and muscle\u2010serosal layers, thickness, fractional anisotropy, and muscle fibre orientation were calculated and reconstructed over three\u2010dimensional anatomies. In the mucosal\u2010submucosal layers, thickness increased from the forestomach through the glandular corpus to the antrum, with characteristic transitions at both sphincters and into the duodenum. In the muscle\u2010serosal layers, thickness was greatest at the lower oesophageal sphincter and consistently greater along the lesser curvature than the greater curvature. Smooth muscles exhibited a bimodal orientation distribution, with circumferential fibres more prominent in the corpus and antrum and longitudinal fibres more prominent in the forestomach. Fractional anisotropy further reflected regional functional differentiation, with denser fibre convergence and lower directional coherence near the lower oesophageal junction. 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