{
  "ptid_time": "128_S_4653_2012-07-18",
  "img_path": "/data/qiuhui/data/adni/images/128_S_4653/2012-07-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 10,883 mm³, 70.6% below the reference mean. With a Z-score of -1.90 (2.8th percentile), this represents moderate atrophy; hippocampal volume measures 6,296 mm³, 3.1% below the reference mean. With a Z-score of -0.25 (40.3th percentile), this represents normal volume ; whole brain volume measures 1,021,720 mm³, 10.1% above the reference mean. With a Z-score of 1.21 (88.7th percentile), this represents mild enlargement. ",
  "text_data": "Age is 80.4 years. Gender is Female. Education: 12 years. Handedness: Left. Race: White. Medical history: Cardiovascular; Endocrine-Metabolic; Allergies or Drug Sensitivities; Malignancy; Major Surgical Procedures. MMSE: 29.0. MoCA: 30.0. Logical Memory: 3.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.99 SUVR (normal ); Amyloid beta: 1108.00 pg/mL (normal ); Total tau: 212.50 pg/mL (normal ); Phosphorylated tau: 18.12 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The imaging shows moderate ventricular atrophy but normal hippocampal and whole brain volumes. Cognitive scores (MMSE 29, MoCA 30) are intact, and biomarkers (Aβ, tau, AV45) are normal, ruling out significant Alzheimer's pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T14:04:07.779114"
}