{
  "ptid_time": "067_S_0098_2006-01-30",
  "img_path": "/data/qiuhui/data/adni/images/067_S_0098/2006-01-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,016 mm³, 13.7% above the reference mean. With a Z-score of 0.37 (64.4th percentile), this represents normal volume ; hippocampal volume measures 4,705 mm³, 27.6% below the reference mean. With a Z-score of -2.21 (1.4th percentile), this represents significant atrophy; whole brain volume measures 765,255 mm³, 17.6% below the reference mean. With a Z-score of -2.11 (1.8th percentile), this represents significant atrophy; entorhinal cortex volume measures 2,718 mm³, 21.5% below the reference mean. With a Z-score of -1.16 (12.3th percentile), this represents mild atrophy; fusiform gyrus volume measures 10,467 mm³, 35.0% below the reference mean. With a Z-score of -2.63 (0.4th percentile), this represents significant atrophy; middle temporal gyrus volume measures 13,550 mm³, 24.8% below the reference mean. With a Z-score of -2.21 (1.4th percentile), this represents significant atrophy. ",
  "text_data": "Age is 84.4 years. Gender is Female. Education: 16 years. MMSE: 26.0. Logical Memory: 7.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows significant atrophy in the hippocampus, whole brain, fusiform gyrus, and middle temporal gyrus, which are key regions affected in Alzheimer's disease. The MMSE score of 26 is borderline, but given the extensive atrophy and age, this likely represents early dementia rather than MCI.  \n\n**Diagnosis:** Dementia (likely Alzheimer’s disease)  \n**Confidence:** Medium (clinical correlation and biomarker confirmation would increase confidence)",
  "timestamp": "2025-07-26T08:25:25.830401"
}