{
  "ptid_time": "116_S_4092_2012-07-24",
  "img_path": "/data/qiuhui/data/adni/images/116_S_4092/2012-07-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 45,589 mm³, 23.3% above the reference mean. With a Z-score of 0.63 (73.6th percentile), this represents normal volume ; hippocampal volume measures 6,481 mm³, 0.2% below the reference mean. With a Z-score of -0.02 (49.3th percentile), this represents normal volume ; whole brain volume measures 1,044,500 mm³, 12.5% above the reference mean. With a Z-score of 1.50 (93.4th percentile), this represents moderate enlargement; entorhinal cortex volume measures 3,438 mm³, 0.7% below the reference mean. With a Z-score of -0.04 (48.5th percentile), this represents normal volume ; fusiform gyrus volume measures 20,200 mm³, 25.4% above the reference mean. With a Z-score of 1.91 (97.2th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 19,038 mm³, 5.6% above the reference mean. With a Z-score of 0.50 (69.1th percentile), this represents normal volume . ",
  "text_data": "Age is 82.5 years. Gender is Female. Education: 14 years. MMSE: 24.0. MoCA: 21.0. Logical Memory: 6.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges or show moderate enlargement, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. The MMSE (24) and MoCA (21) scores suggest mild cognitive impairment, but the absence of structural brain changes typical of Alzheimer’s and no APOE4 allele reduce the likelihood of dementia.  \n\n**Diagnosis:** MCI (Mild Cognitive Impairment)  \n**Confidence:** Medium (cognitive scores indicate impairment, but structural findings do not strongly support dementia)",
  "timestamp": "2025-07-26T12:07:27.670332"
}