{
  "ptid_time": "023_S_4020_2013-06-10",
  "img_path": "/data/qiuhui/data/adni/images/023_S_4020/2013-06-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,179 mm³, 32.8% below the reference mean. With a Z-score of -0.78 (21.8th percentile), this represents normal volume ; hippocampal volume measures 8,169 mm³, 1.8% above the reference mean. With a Z-score of 0.18 (57.0th percentile), this represents normal volume ; whole brain volume measures 1,195,080 mm³, 5.3% above the reference mean. With a Z-score of 0.76 (77.5th percentile), this represents normal volume ; entorhinal cortex volume measures 4,679 mm³, 9.8% above the reference mean. With a Z-score of 0.68 (75.0th percentile), this represents normal volume ; fusiform gyrus volume measures 21,547 mm³, 8.2% above the reference mean. With a Z-score of 0.68 (75.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 24,237 mm³, 8.1% above the reference mean. With a Z-score of 0.67 (74.9th percentile), this represents normal volume . ",
  "text_data": "Age is 68.5 years. Gender is Male. Education: 16 years. MMSE: 30.0. MoCA: 25.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.03 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges, with Z-scores close to or above the mean. The MMSE score of 30 is normal, while the MoCA score of 25 is slightly below the typical cutoff of 26, but not strongly indicative of impairment. APOE4 is negative, and AV45 (amyloid PET) is normal, suggesting no significant amyloid pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to the slightly reduced MoCA score, but otherwise normal biomarkers and imaging)",
  "timestamp": "2025-07-26T03:00:30.526130"
}