{
  "ptid_time": "109_S_1183_2009-01-14",
  "img_path": "/data/qiuhui/data/adni/images/109_S_1183/2009-01-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,991 mm³, 8.6% below the reference mean. With a Z-score of -0.25 (40.2th percentile), this represents normal volume ; whole brain volume measures 940,394 mm³, 8.6% below the reference mean. With a Z-score of -1.13 (12.9th percentile), this represents mild atrophy. ",
  "text_data": "Age is 82.2 years. Gender is Male. Education: 16 years. MMSE: 29.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Total tau: 346.10 pg/mL (mild elevated); Phosphorylated tau: 31.09 pg/mL (mild elevated). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The patient shows mild whole brain atrophy (Z-score -1.13, 12.9th percentile) but normal ventricular volume. Despite mild elevation in T-tau and P-tau, cognitive function remains intact (MMSE 29/30), and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (mild atrophy and tau elevation could suggest early changes, but preserved cognition supports CN)",
  "timestamp": "2025-07-26T11:31:01.948681"
}