{
  "ptid_time": "032_S_0978_2007-05-09",
  "img_path": "/data/qiuhui/data/adni/images/032_S_0978/2007-05-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,563 mm³, 5.1% below the reference mean. With a Z-score of -0.12 (45.2th percentile), this represents normal volume ; hippocampal volume measures 6,174 mm³, 18.3% below the reference mean. With a Z-score of -1.79 (3.7th percentile), this represents moderate atrophy; whole brain volume measures 1,057,980 mm³, 2.0% below the reference mean. With a Z-score of -0.26 (39.8th percentile), this represents normal volume ; entorhinal cortex volume measures 2,535 mm³, 38.2% below the reference mean. With a Z-score of -2.59 (0.5th percentile), this represents significant atrophy; fusiform gyrus volume measures 18,237 mm³, 3.2% below the reference mean. With a Z-score of -0.27 (39.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,477 mm³, 4.0% below the reference mean. With a Z-score of -0.36 (35.8th percentile), this represents normal volume . ",
  "text_data": "Age is 73.6 years. Gender is Male. Education: 12 years. MMSE: 26.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal and entorhinal cortex volumes show significant atrophy (Z-scores of -1.79 and -2.59, respectively), which are key regions affected in Alzheimer's disease. The MMSE score of 26 is borderline, suggesting mild cognitive impairment rather than dementia.  \n**Diagnosis:** MCI (Mild Cognitive Impairment)  \n**Confidence:** Medium (due to borderline MMSE and lack of detailed clinical history)",
  "timestamp": "2025-07-26T04:58:28.989359"
}