{
  "ptid_time": "073_S_0089_2015-02-18",
  "img_path": "/data/qiuhui/data/adni/images/073_S_0089/2015-02-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,991 mm³, 37.7% below the reference mean. With a Z-score of -0.90 (18.3th percentile), this represents normal volume ; hippocampal volume measures 7,479 mm³, 1.1% below the reference mean. With a Z-score of -0.10 (45.9th percentile), this represents normal volume ; whole brain volume measures 1,058,530 mm³, 1.9% below the reference mean. With a Z-score of -0.25 (40.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,131 mm³, 0.7% above the reference mean. With a Z-score of 0.05 (52.0th percentile), this represents normal volume ; fusiform gyrus volume measures 22,197 mm³, 17.8% above the reference mean. With a Z-score of 1.52 (93.6th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 23,601 mm³, 10.6% above the reference mean. With a Z-score of 0.95 (83.0th percentile), this represents normal volume . ",
  "text_data": "Age is 74.1 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 25.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.98 SUVR (normal ); Amyloid beta: 1604.00 pg/mL (moderate elevated); Total tau: 171.30 pg/mL (normal ); Phosphorylated tau: 15.77 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measures are largely within normal ranges, with only the fusiform gyrus showing moderate enlargement. Cognitive scores (MMSE 30, MoCA 25) are borderline for MCI but not dementia. Biomarkers show moderate Aβ elevation but normal tau and AV45, suggesting early amyloid pathology without significant neurodegeneration.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium  \n\n(Confidence is medium due to borderline MoCA and elevated Aβ, but normal tau and preserved brain volumes support CN.)",
  "timestamp": "2025-07-26T09:29:21.249583"
}