{
  "ptid_time": "941_S_4376_2012-03-30",
  "img_path": "/data/qiuhui/data/adni/images/941_S_4376/2012-03-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,534 mm³, 12.3% above the reference mean. With a Z-score of 0.28 (61.1th percentile), this represents normal volume ; hippocampal volume measures 6,812 mm³, 4.3% below the reference mean. With a Z-score of -0.39 (34.8th percentile), this represents normal volume ; whole brain volume measures 955,752 mm³, 1.9% below the reference mean. With a Z-score of -0.24 (40.4th percentile), this represents normal volume . ",
  "text_data": "Age is 76.5 years. Gender is Female. Education: 16 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.94 SUVR (mild reduced); Total tau: 277.00 pg/mL (normal ); Phosphorylated tau: 23.97 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volumes (ventricular, hippocampal, and whole brain) are within normal ranges, with only mild deviations from the reference mean. Cognitive scores (MMSE 29, MoCA 26) are strong, and biomarkers (T-tau, P-tau, AV45) do not indicate significant pathology.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:39:00.679570"
}