{
  "ptid_time": "098_S_2052_2010-09-08",
  "img_path": "/data/qiuhui/data/adni/images/098_S_2052/2010-09-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,231 mm³, 13.7% below the reference mean. With a Z-score of -0.33 (37.1th percentile), this represents normal volume ; hippocampal volume measures 8,349 mm³, 10.4% above the reference mean. With a Z-score of 1.02 (84.6th percentile), this represents mild enlargement; whole brain volume measures 1,251,240 mm³, 15.9% above the reference mean. With a Z-score of 2.07 (98.1th percentile), this represents significant enlargement. ",
  "text_data": "Age is 73.1 years. Gender is Male. Education: 20 years. Handedness: Right. Race: White. Medical history: Neurologic; Cardiovascular; Musculoskeletal; Malignancy. MMSE: 29.0. MoCA: 26.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ); Amyloid beta: 1181.00 pg/mL (normal ); Total tau: 213.90 pg/mL (normal ); Phosphorylated tau: 17.63 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements (ventricular, hippocampal, and whole brain) are all within or above normal ranges, with no significant atrophy. Cognitive scores (MMSE 29, MoCA 26) are within normal limits, and biomarkers (Aβ, T-tau, P-tau, AV45) are normal, ruling out Alzheimer's pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T10:43:44.260244"
}