{
  "ptid_time": "041_S_4004_2011-10-28",
  "img_path": "/data/qiuhui/data/adni/images/041_S_4004/2011-10-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,410 mm³, 13.8% above the reference mean. With a Z-score of 0.34 (63.5th percentile), this represents normal volume ; hippocampal volume measures 6,980 mm³, 9.2% below the reference mean. With a Z-score of -1.03 (15.2th percentile), this represents mild atrophy; whole brain volume measures 1,016,690 mm³, 1.2% below the reference mean. With a Z-score of -0.15 (44.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,286 mm³, 15.6% below the reference mean. With a Z-score of -1.21 (11.3th percentile), this represents mild atrophy; fusiform gyrus volume measures 17,509 mm³, 3.8% below the reference mean. With a Z-score of -0.43 (33.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,358 mm³, 5.7% below the reference mean. With a Z-score of -0.50 (30.7th percentile), this represents normal volume . ",
  "text_data": "Age is 67.3 years. Gender is Female. Education: 14 years. MMSE: 28.0. MoCA: 25.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal and entorhinal cortex volumes show mild atrophy (Z-scores of -1.03 and -1.21, respectively), which are early markers of Alzheimer's pathology. However, cognitive scores (MMSE 28, MoCA 25) remain within normal limits, suggesting no significant functional impairment.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (Structural changes are present, but cognitive performance is borderline normal; APOE4-negative status reduces Alzheimer's risk but doesn't rule out MCI.)",
  "timestamp": "2025-07-26T07:08:49.304363"
}