{
  "ptid_time": "002_S_1155_2007-06-21",
  "img_path": "/data/qiuhui/data/adni/images/002_S_1155/2007-06-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,953 mm³, 59.8% above the reference mean. With a Z-score of 0.79 (78.6th percentile), this represents normal volume ; hippocampal volume measures 8,140 mm³.; whole brain volume measures 1,137,530 mm³, 4.6% below the reference mean. With a Z-score of -0.85 (19.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,418 mm³, 14.6% below the reference mean. With a Z-score of -1.28 (10.0th percentile), this represents mild atrophy; fusiform gyrus volume measures 21,218 mm³, 1.8% above the reference mean. With a Z-score of 0.27 (60.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,981 mm³.. ",
  "text_data": "Age is 58.3 years. Gender is Male. Education: 20 years. MMSE: 27.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume (8,140 mm³) and whole brain volume (Z-score -0.85) are within normal ranges, but the entorhinal cortex shows mild atrophy (Z-score -1.28, 10th percentile). The MMSE score of 27 is borderline but still within normal limits for age. No APOE4 alleles suggest lower genetic risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to borderline MMSE and mild entorhinal atrophy, but no significant hippocampal or whole-brain volume loss)",
  "timestamp": "2025-07-25T20:10:42.156326"
}