{
  "ptid_time": "041_S_0598_2007-01-30",
  "img_path": "/data/qiuhui/data/adni/images/041_S_0598/2007-01-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 85,644 mm³, 122.4% above the reference mean. With a Z-score of 2.93 (99.8th percentile), this represents significant enlargement; hippocampal volume measures 6,697 mm³, 11.4% below the reference mean. With a Z-score of -1.11 (13.3th percentile), this represents mild atrophy; whole brain volume measures 1,181,140 mm³, 9.4% above the reference mean. With a Z-score of 1.22 (88.9th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,837 mm³, 6.4% below the reference mean. With a Z-score of -0.44 (33.1th percentile), this represents normal volume ; fusiform gyrus volume measures 16,378 mm³, 13.1% below the reference mean. With a Z-score of -1.11 (13.3th percentile), this represents mild atrophy; middle temporal gyrus volume measures 18,463 mm³, 13.5% below the reference mean. With a Z-score of -1.21 (11.3th percentile), this represents mild atrophy. ",
  "text_data": "Age is 72.8 years. Gender is Male. Education: 20 years. MMSE: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant ventricular enlargement (Z-score 2.93) and mild hippocampal atrophy (Z-score -1.11), along with mild atrophy in the fusiform gyrus and middle temporal gyrus. However, the MMSE score of 28 is within the normal range, and there is no APOE4 risk allele. The entorhinal cortex is normal, and whole brain volume is mildly enlarged.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to conflicting findings—structural changes suggest neurodegeneration, but cognitive performance remains intact)",
  "timestamp": "2025-07-26T06:59:33.354515"
}