{
  "ptid_time": "051_S_1072_2012-10-17",
  "img_path": "/data/qiuhui/data/adni/images/051_S_1072/2012-10-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 15,596 mm³, 30.2% below the reference mean. With a Z-score of -0.76 (22.5th percentile), this represents normal volume ; hippocampal volume measures 8,719 mm³, 13.5% above the reference mean. With a Z-score of 1.51 (93.5th percentile), this represents moderate enlargement; whole brain volume measures 1,070,660 mm³, 4.0% above the reference mean. With a Z-score of 0.50 (69.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,982 mm³, 2.3% above the reference mean. With a Z-score of 0.18 (57.0th percentile), this represents normal volume ; fusiform gyrus volume measures 20,281 mm³, 11.4% above the reference mean. With a Z-score of 1.28 (90.0th percentile), this represents mild enlargement; middle temporal gyrus volume measures 22,579 mm³, 10.0% above the reference mean. With a Z-score of 0.89 (81.4th percentile), this represents normal volume . ",
  "text_data": "Age is 65.8 years. Gender is Female. Education: 13 years. Handedness: Right. Race: White. Medical history: Dermatologic-Connective Tissue; Musculoskeletal; Endocrine-Metabolic. MMSE: 28.0. MoCA: 22.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows no significant atrophy in key regions typically affected in Alzheimer's (hippocampus is enlarged, not reduced). Cognitive scores are mixed (MMSE normal, MoCA slightly below normal), but no APOE4 risk allele is present.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (MoCA score is borderline, but structural imaging does not support neurodegeneration)",
  "timestamp": "2025-07-26T07:32:22.884765"
}