{
  "ptid_time": "072_S_4206_2012-03-26",
  "img_path": "/data/qiuhui/data/adni/images/072_S_4206/2012-03-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 76,539 mm³, 154.9% above the reference mean. With a Z-score of 3.68 (100.0th percentile), this represents profound enlargement; hippocampal volume measures 6,803 mm³, 15.2% below the reference mean. With a Z-score of -1.52 (6.4th percentile), this represents moderate atrophy; whole brain volume measures 1,039,740 mm³, 8.4% below the reference mean. With a Z-score of -1.18 (11.8th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,760 mm³, 11.8% below the reference mean. With a Z-score of -0.82 (20.7th percentile), this represents normal volume ; fusiform gyrus volume measures 18,814 mm³, 5.5% below the reference mean. With a Z-score of -0.46 (32.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,451 mm³, 4.6% above the reference mean. With a Z-score of 0.38 (64.9th percentile), this represents normal volume . ",
  "text_data": "Age is 69.1 years. Gender is Male. Education: 17 years. MMSE: 28.0. MoCA: 23.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows **profound ventricular enlargement** (Z-score 3.68) and **moderate hippocampal atrophy** (Z-score -1.52), both strong indicators of neurodegeneration. However, cognitive scores (MMSE 28, MoCA 23) are borderline for MCI, with no significant APOE4 risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to conflicting imaging severity vs. relatively preserved cognition)",
  "timestamp": "2025-07-26T09:18:30.805453"
}