{
  "ptid_time": "129_S_6228_2020-03-03",
  "img_path": "/data/qiuhui/data/adni/images/129_S_6228/2020-03-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,508 mm³, 30.1% above the reference mean. With a Z-score of 0.69 (75.4th percentile), this represents normal volume ; hippocampal volume measures 6,964 mm³, 2.1% below the reference mean. With a Z-score of -0.19 (42.3th percentile), this represents normal volume ; whole brain volume measures 925,407 mm³, 5.1% below the reference mean. With a Z-score of -0.64 (26.2th percentile), this represents normal volume ; entorhinal cortex volume measures 4,059 mm³, 10.5% above the reference mean. With a Z-score of 0.65 (74.1th percentile), this represents normal volume ; fusiform gyrus volume measures 16,030 mm³, 5.8% below the reference mean. With a Z-score of -0.53 (29.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,509 mm³, 12.2% above the reference mean. With a Z-score of 1.06 (85.5th percentile), this represents mild enlargement. ",
  "text_data": "Age is 77.1 years. Gender is Female. Education: 14 years. MMSE: 30.0. MoCA: 26.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.92 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements are largely within normal ranges, with only mild deviations (e.g., slightly reduced whole brain and fusiform gyrus volumes, mild enlargement in the middle temporal gyrus). Cognitive scores (MMSE 30, MoCA 26) are borderline for MCI but still within normal limits for age. No APOE4 risk allele and mild amyloid burden (AV45) suggest lower Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to borderline MoCA score but otherwise normal structural and biomarker findings)",
  "timestamp": "2025-07-26T14:18:38.578926"
}