{
  "ptid_time": "136_S_0300_2008-05-19",
  "img_path": "/data/qiuhui/data/adni/images/136_S_0300/2008-05-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,059 mm³, 28.2% above the reference mean. With a Z-score of 0.37 (64.6th percentile), this represents normal volume ; hippocampal volume measures 7,084 mm³.; whole brain volume measures 1,324,350 mm³, 11.1% above the reference mean. With a Z-score of 2.05 (98.0th percentile), this represents significant enlargement; entorhinal cortex volume measures 3,731 mm³, 6.8% below the reference mean. With a Z-score of -0.60 (27.5th percentile), this represents normal volume ; fusiform gyrus volume measures 21,746 mm³, 4.3% above the reference mean. With a Z-score of 0.66 (74.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 26,987 mm³.. ",
  "text_data": "Age is 58.4 years. Gender is Male. Education: 16 years. MMSE: 26.0. Logical Memory: 0.0. Laboratory findings: Triglycerides (GPO): 324.00 (profound elevated). APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume (7,084 mm³) is within normal range, and the entorhinal cortex volume is only slightly below the reference mean (-0.60 Z-score). The MMSE score of 26 is borderline but not definitively impaired. The presence of two APOE4 alleles increases Alzheimer's risk, but structural brain changes are not yet severe.  \n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to borderline MMSE and APOE4 risk, but lack of significant atrophy)",
  "timestamp": "2025-07-26T16:01:04.545654"
}