{
  "ptid_time": "116_S_1315_2009-04-16",
  "img_path": "/data/qiuhui/data/adni/images/116_S_1315/2009-04-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,053 mm³, 5.2% below the reference mean. With a Z-score of -0.14 (44.4th percentile), this represents normal volume ; hippocampal volume measures 5,481 mm³, 15.6% below the reference mean. With a Z-score of -1.25 (10.5th percentile), this represents mild atrophy; whole brain volume measures 943,637 mm³, 1.7% above the reference mean. With a Z-score of 0.20 (57.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,008 mm³, 13.1% below the reference mean. With a Z-score of -0.71 (23.9th percentile), this represents normal volume ; fusiform gyrus volume measures 12,388 mm³, 23.1% below the reference mean. With a Z-score of -1.74 (4.1th percentile), this represents moderate atrophy; middle temporal gyrus volume measures 16,952 mm³, 6.0% below the reference mean. With a Z-score of -0.53 (29.8th percentile), this represents normal volume . ",
  "text_data": "Age is 85.3 years. Gender is Female. Education: 14 years. MMSE: 21.0. Logical Memory: 0.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The hippocampal and fusiform gyrus volumes show mild to moderate atrophy, which are key regions affected in Alzheimer's disease. The MMSE score of 21 suggests cognitive impairment, but the absence of APOE4 reduces genetic risk.  \nDiagnosis: MCI (Mild Cognitive Impairment)  \nConfidence: Medium",
  "timestamp": "2025-07-26T12:05:19.612824"
}