{
  "ptid_time": "168_S_6350_2020-12-03",
  "img_path": "/data/qiuhui/data/adni/images/168_S_6350/2020-12-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,461 mm³, 1.4% above the reference mean. With a Z-score of 0.03 (51.3th percentile), this represents normal volume ; hippocampal volume measures 7,324 mm³, 2.9% above the reference mean. With a Z-score of 0.27 (60.7th percentile), this represents normal volume ; whole brain volume measures 980,676 mm³, 0.6% above the reference mean. With a Z-score of 0.08 (53.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,267 mm³, 16.2% above the reference mean. With a Z-score of 0.99 (84.0th percentile), this represents normal volume ; fusiform gyrus volume measures 17,025 mm³, 0.1% above the reference mean. With a Z-score of 0.01 (50.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,776 mm³, 8.4% above the reference mean. With a Z-score of 0.73 (76.7th percentile), this represents normal volume . ",
  "text_data": "Age is 79.9 years. Gender is Female. Education: 14 years. MMSE: 24.0. MoCA: 21.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are all within normal ranges, with Z-scores close to or slightly above the mean. However, the MMSE (24) and MoCA (21) scores suggest mild cognitive impairment, particularly given the age of the patient (79.9). The absence of APOE4 reduces genetic risk but does not rule out MCI.  \n\n**Diagnosis:** **MCI (Mild Cognitive Impairment)**  \n**Confidence:** **Medium** (Cognitive scores indicate impairment, but structural brain volumes are normal, and APOE4 is negative.)",
  "timestamp": "2025-07-26T17:20:23.323287"
}