{
  "ptid_time": "130_S_4352_2012-05-08",
  "img_path": "/data/qiuhui/data/adni/images/130_S_4352/2012-05-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 46,470 mm³, 1.2% below the reference mean. With a Z-score of -0.03 (48.7th percentile), this represents normal volume ; hippocampal volume measures 6,439 mm³, 7.6% below the reference mean. With a Z-score of -0.66 (25.6th percentile), this represents normal volume ; whole brain volume measures 1,037,310 mm³, 0.8% above the reference mean. With a Z-score of 0.10 (54.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,605 mm³, 9.2% below the reference mean. With a Z-score of -0.60 (27.4th percentile), this represents normal volume ; fusiform gyrus volume measures 16,402 mm³, 9.2% below the reference mean. With a Z-score of -0.80 (21.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,511 mm³, 3.3% below the reference mean. With a Z-score of -0.29 (38.5th percentile), this represents normal volume . ",
  "text_data": "Age is 84.1 years. Gender is Male. Education: 16 years. MMSE: 29.0. MoCA: 23.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are all within normal ranges (Z-scores between -0.03 and -0.80, percentiles between 21.3 and 54.1), with no significant atrophy. The MMSE score of 29 is normal, but the MoCA score of 23 suggests mild cognitive impairment (MCI). The absence of APOE4 reduces Alzheimer's risk, but age remains a factor.  \n\n**Diagnosis:** **MCI** (due to MoCA score, despite normal imaging)  \n**Confidence:** **Medium** (imaging does not support neurodegeneration, but MoCA indicates cognitive decline)",
  "timestamp": "2025-07-26T14:40:37.063675"
}