{
  "ptid_time": "037_S_4015_2011-11-16",
  "img_path": "/data/qiuhui/data/adni/images/037_S_4015/2011-11-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 45,253 mm³, 61.2% above the reference mean. With a Z-score of 1.40 (92.0th percentile), this represents mild enlargement; hippocampal volume measures 4,724 mm³, 33.6% below the reference mean. With a Z-score of -3.08 (0.1th percentile), this represents profound atrophy; whole brain volume measures 992,508 mm³, 1.8% above the reference mean. With a Z-score of 0.23 (59.1th percentile), this represents normal volume . ",
  "text_data": "Age is 74.1 years. Gender is Female. Education: 20 years. MMSE: 27.0. MoCA: 21.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows profound hippocampal atrophy (Z-score -3.08) and mild ventricular enlargement, which are strong indicators of neurodegeneration. The MMSE (27) is borderline normal, but the MoCA (21) suggests mild cognitive impairment, consistent with hippocampal damage.  \n**Diagnosis:** **Mild Cognitive Impairment (MCI)** (likely prodromal Alzheimer’s given hippocampal atrophy and APOE4 positivity).  \n**Confidence:** **High** (due to clear structural atrophy and cognitive testing alignment).",
  "timestamp": "2025-07-26T06:38:34.421102"
}