{
  "ptid_time": "941_S_6580_2020-09-28",
  "img_path": "/data/qiuhui/data/adni/images/941_S_6580/2020-09-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 63,739 mm³, 72.4% above the reference mean. With a Z-score of 1.96 (97.5th percentile), this represents moderate enlargement; hippocampal volume measures 6,710 mm³, 3.3% above the reference mean. With a Z-score of 0.27 (60.5th percentile), this represents normal volume ; whole brain volume measures 915,412 mm³, 1.4% below the reference mean. With a Z-score of -0.17 (43.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,887 mm³, 12.3% above the reference mean. With a Z-score of 0.66 (74.6th percentile), this represents normal volume ; fusiform gyrus volume measures 17,614 mm³, 9.3% above the reference mean. With a Z-score of 0.70 (75.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,069 mm³, 5.8% above the reference mean. With a Z-score of 0.51 (69.6th percentile), this represents normal volume . ",
  "text_data": "Age is 81.9 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.58 SUVR (profound elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is moderately enlarged (72.4% above reference mean, Z-score 1.96), which can indicate atrophy, but hippocampal and other regional volumes are normal or above average. Cognitive scores (MMSE 29, MoCA 26) are within normal limits for age, and APOE4-negative status reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular enlargement is notable, but cognitive performance and other volumes suggest no significant impairment).",
  "timestamp": "2025-07-26T17:50:26.614798"
}