{
  "ptid_time": "128_S_2130_2013-01-23",
  "img_path": "/data/qiuhui/data/adni/images/128_S_2130/2013-01-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 73,374 mm³, 90.5% above the reference mean. With a Z-score of 2.17 (98.5th percentile), this represents significant enlargement; hippocampal volume measures 5,459 mm³, 27.8% below the reference mean. With a Z-score of -2.71 (0.3th percentile), this represents significant atrophy; whole brain volume measures 1,146,250 mm³, 6.2% above the reference mean. With a Z-score of 0.80 (78.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,009 mm³, 2.2% below the reference mean. With a Z-score of -0.15 (44.0th percentile), this represents normal volume ; fusiform gyrus volume measures 20,790 mm³, 10.4% above the reference mean. With a Z-score of 0.88 (81.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,323 mm³, 4.6% above the reference mean. With a Z-score of 0.41 (66.1th percentile), this represents normal volume . ",
  "text_data": "Age is 78.4 years. Gender is Male. Education: 16 years. MMSE: 30.0. MoCA: 26.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.35 SUVR (significant elevated). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant hippocampal atrophy (Z-score -2.71, 0.3rd percentile) and ventricular enlargement (Z-score 2.17, 98.5th percentile), both strong indicators of neurodegeneration. Despite normal cognitive scores (MMSE 30, MoCA 26), the structural changes and elevated AV45 (amyloid PET) suggest underlying Alzheimer's pathology.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)** (likely due to Alzheimer's disease)  \n**Confidence:** **Medium** (cognitive scores are intact, but imaging and amyloid burden strongly suggest early-stage pathology)",
  "timestamp": "2025-07-26T13:59:54.212397"
}