{
  "ptid_time": "041_S_0549_2007-10-16",
  "img_path": "/data/qiuhui/data/adni/images/041_S_0549/2007-10-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,219 mm³, 39.3% below the reference mean. With a Z-score of -0.93 (17.5th percentile), this represents normal volume ; hippocampal volume measures 6,750 mm³, 15.9% below the reference mean. With a Z-score of -1.59 (5.6th percentile), this represents moderate atrophy; whole brain volume measures 1,021,810 mm³, 9.9% below the reference mean. With a Z-score of -1.41 (8.0th percentile), this represents mild atrophy; entorhinal cortex volume measures 4,272 mm³, 0.2% above the reference mean. With a Z-score of 0.01 (50.6th percentile), this represents normal volume ; fusiform gyrus volume measures 15,612 mm³, 21.6% below the reference mean. With a Z-score of -1.79 (3.6th percentile), this represents moderate atrophy; middle temporal gyrus volume measures 17,114 mm³, 23.6% below the reference mean. With a Z-score of -1.95 (2.6th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 69.7 years. Gender is Male. Education: 14 years. MMSE: 23.0. Logical Memory: 1.0. APOEε4 alleles: 1.0. Biomarker levels: Pittsburgh compound B: 2.13 SUVR (mild elevated). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The patient shows moderate atrophy in the hippocampus, fusiform gyrus, and middle temporal gyrus, which are key regions affected in Alzheimer's disease. The MMSE score of 23 suggests mild cognitive impairment, and the presence of one APOE4 allele increases Alzheimer's risk.  \nDiagnosis: MCI (likely due to Alzheimer's pathology)  \nConfidence: Medium (clinical correlation and biomarker confirmation would strengthen confidence)",
  "timestamp": "2025-07-26T06:58:54.239814"
}