{
  "ptid_time": "024_S_2239_2011-05-31",
  "img_path": "/data/qiuhui/data/adni/images/024_S_2239/2011-05-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,413 mm³, 48.6% below the reference mean. With a Z-score of -1.11 (13.3th percentile), this represents mild atrophy; hippocampal volume measures 8,041 mm³, 13.0% above the reference mean. With a Z-score of 1.19 (88.4th percentile), this represents mild enlargement; whole brain volume measures 1,026,280 mm³, 5.3% above the reference mean. With a Z-score of 0.67 (74.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,763 mm³, 2.5% above the reference mean. With a Z-score of 0.15 (56.0th percentile), this represents normal volume ; fusiform gyrus volume measures 18,474 mm³, 8.6% above the reference mean. With a Z-score of 0.78 (78.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,814 mm³, 13.8% above the reference mean. With a Z-score of 1.20 (88.4th percentile), this represents mild enlargement. ",
  "text_data": "Age is 74.0 years. Gender is Female. Education: 15 years. MMSE: 27.0. MoCA: 29.0. Laboratory findings: Vitamin B12: 2591.00 (profound elevated); Total Bilirubin: 0.90 (significant elevated); Alkaline Phosphatase: 112.00 (significant elevated). APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild ventricular atrophy but otherwise normal or slightly enlarged volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 27, MoCA 29) are within normal limits, and APOE4 status (heterozygous) is a risk factor but not diagnostic. No significant atrophy in Alzheimer’s-vulnerable regions is observed.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild ventricular atrophy, but preserved cognitive function and no other concerning structural changes)",
  "timestamp": "2025-07-26T03:16:12.987077"
}