{
  "ptid_time": "153_S_4139_2012-03-14",
  "img_path": "/data/qiuhui/data/adni/images/153_S_4139/2012-03-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 16,462 mm³, 41.3% below the reference mean. With a Z-score of -0.95 (17.2th percentile), this represents normal volume ; hippocampal volume measures 6,371 mm³, 10.5% below the reference mean. With a Z-score of -0.96 (16.9th percentile), this represents normal volume ; whole brain volume measures 897,038 mm³, 8.0% below the reference mean. With a Z-score of -1.00 (15.8th percentile), this represents mild atrophy; entorhinal cortex volume measures 2,976 mm³, 19.0% below the reference mean. With a Z-score of -1.16 (12.2th percentile), this represents mild atrophy; fusiform gyrus volume measures 17,256 mm³, 1.4% above the reference mean. With a Z-score of 0.13 (55.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,873 mm³, 12.0% below the reference mean. With a Z-score of -1.04 (14.9th percentile), this represents mild atrophy. ",
  "text_data": "Age is 71.0 years. Gender is Female. Education: 17 years. MMSE: 28.0. MoCA: 24.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild atrophy in the whole brain, entorhinal cortex, and middle temporal gyrus, while hippocampal volume is within normal limits. Cognitive testing (MMSE 28, MoCA 24) suggests mild cognitive impairment, particularly given the MoCA score below the typical cutoff of 26. No APOE4 allele is present, reducing genetic risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (Moderate atrophy in key regions and borderline MoCA, but MMSE is normal and no APOE4 risk factor)",
  "timestamp": "2025-07-26T17:11:59.568775"
}