{
  "ptid_time": "012_S_4012_2012-05-21",
  "img_path": "/data/qiuhui/data/adni/images/012_S_4012/2012-05-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 10,357 mm³, 53.6% below the reference mean. With a Z-score of -1.34 (9.0th percentile), this represents mild atrophy; hippocampal volume measures 6,727 mm³, 12.5% below the reference mean. With a Z-score of -1.40 (8.1th percentile), this represents mild atrophy; whole brain volume measures 1,025,300 mm³, 0.4% below the reference mean. With a Z-score of -0.05 (48.1th percentile), this represents normal volume ; entorhinal cortex volume measures 2,986 mm³, 23.3% below the reference mean. With a Z-score of -1.81 (3.6th percentile), this represents moderate atrophy; fusiform gyrus volume measures 16,919 mm³, 7.1% below the reference mean. With a Z-score of -0.80 (21.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,517 mm³, 4.9% below the reference mean. With a Z-score of -0.43 (33.2th percentile), this represents normal volume . ",
  "text_data": "Age is 69.9 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The imaging shows mild to moderate atrophy in key Alzheimer's-related regions (hippocampus, entorhinal cortex, ventricles), but cognitive scores (MMSE, MoCA) are intact, and there is no APOE4 risk allele. This suggests possible preclinical Alzheimer's changes without clinical impairment.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (structural changes raise concern, but cognitive performance is preserved)",
  "timestamp": "2025-07-25T23:10:00.861605"
}