{
  "ptid_time": "941_S_4764_2014-06-16",
  "img_path": "/data/qiuhui/data/adni/images/941_S_4764/2014-06-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 68,409 mm³, 85.1% above the reference mean. With a Z-score of 2.30 (98.9th percentile), this represents significant enlargement; hippocampal volume measures 5,928 mm³, 8.7% below the reference mean. With a Z-score of -0.70 (24.2th percentile), this represents normal volume ; whole brain volume measures 893,966 mm³, 3.7% below the reference mean. With a Z-score of -0.44 (32.9th percentile), this represents normal volume . ",
  "text_data": "Age is 84.7 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.24 SUVR (mild elevated); Amyloid beta: 834.30 pg/mL (normal ); Total tau: 326.50 pg/mL (mild elevated); Phosphorylated tau: 30.70 pg/mL (mild elevated). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The patient shows significant ventricular enlargement (indicative of brain atrophy) but normal hippocampal and whole brain volumes. Cognitive scores (MMSE, MoCA) are intact, and biomarkers (Aβ normal, mild elevation in tau and AV45) suggest possible early neurodegenerative changes without significant cognitive impairment.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (Biomarkers suggest early pathology, but cognition remains intact; ventricular enlargement may reflect age-related atrophy rather than dementia progression.)",
  "timestamp": "2025-07-26T17:43:06.252215"
}