{
  "ptid_time": "021_S_4558_2012-10-01",
  "img_path": "/data/qiuhui/data/adni/images/021_S_4558/2012-10-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,209 mm³, 17.3% below the reference mean. With a Z-score of -0.40 (34.6th percentile), this represents normal volume ; whole brain volume measures 1,009,290 mm³, 3.6% above the reference mean. With a Z-score of 0.45 (67.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,178 mm³, 13.5% below the reference mean. With a Z-score of -0.83 (20.4th percentile), this represents normal volume ; fusiform gyrus volume measures 14,910 mm³, 12.4% below the reference mean. With a Z-score of -1.13 (13.0th percentile), this represents mild atrophy; middle temporal gyrus volume measures 18,755 mm³, 2.2% below the reference mean. With a Z-score of -0.19 (42.6th percentile), this represents normal volume . ",
  "text_data": "Age is 70.5 years. Gender is Female. Education: 20 years. MMSE: 29.0. MoCA: 22.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The imaging shows mild atrophy in the fusiform gyrus but otherwise normal brain volumes. The MMSE is normal (29/30), but the MoCA (22/30) suggests mild cognitive impairment, which is further supported by the presence of one APOE4 allele, a known risk factor for Alzheimer's.  \nDiagnosis: **MCI**  \nConfidence: **Medium** (MoCA is borderline, and imaging findings are not strongly indicative of neurodegeneration alone.)",
  "timestamp": "2025-07-26T01:49:08.436915"
}