{
  "ptid_time": "136_S_0196_2006-10-23",
  "img_path": "/data/qiuhui/data/adni/images/136_S_0196/2006-10-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,513 mm³, 15.8% above the reference mean. With a Z-score of 0.36 (64.2th percentile), this represents normal volume ; hippocampal volume measures 7,067 mm³, 0.7% below the reference mean. With a Z-score of -0.06 (47.6th percentile), this represents normal volume ; whole brain volume measures 922,073 mm³, 5.4% below the reference mean. With a Z-score of -0.68 (24.9th percentile), this represents normal volume ; entorhinal cortex volume measures 2,977 mm³, 18.9% below the reference mean. With a Z-score of -1.16 (12.2th percentile), this represents mild atrophy; fusiform gyrus volume measures 15,578 mm³, 8.4% below the reference mean. With a Z-score of -0.77 (22.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,281 mm³, 9.9% below the reference mean. With a Z-score of -0.86 (19.6th percentile), this represents normal volume . ",
  "text_data": "Age is 78.5 years. Gender is Female. Education: 18 years. MMSE: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild atrophy in the entorhinal cortex (Z-score -1.16, 12.2th percentile), while other regions, including the hippocampus, are within normal ranges. The MMSE score of 29 is intact, and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (Mild entorhinal atrophy could be an early indicator, but cognitive performance remains intact.)",
  "timestamp": "2025-07-26T15:59:48.077028"
}