{
  "ptid_time": "024_S_1393_2007-03-13",
  "img_path": "/data/qiuhui/data/adni/images/024_S_1393/2007-03-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 77,860 mm³, 65.6% above the reference mean. With a Z-score of 1.91 (97.2th percentile), this represents moderate enlargement; whole brain volume measures 1,098,860 mm³, 6.8% above the reference mean. With a Z-score of 0.89 (81.3th percentile), this represents normal volume . ",
  "text_data": "Age is 82.5 years. Gender is Male. Education: 18 years. Handedness: Left. Race: White. Medical history: Psychiatric; Cardiovascular; Respiratory; Musculoskeletal; Malignancy; Major Surgical Procedures. MMSE: 27.0. Logical Memory: 0.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 857.20 pg/mL (normal ); Total tau: 277.00 pg/mL (normal ); Phosphorylated tau: 25.27 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is moderately enlarged (65.6% above reference mean, Z-score 1.91), which can indicate atrophy, but whole brain volume is normal (6.8% above reference mean, Z-score 0.89). Cognitive testing (MMSE 27/30) is within normal limits, and biomarkers (Aβ, T-tau, P-tau) are normal, suggesting no significant neurodegenerative pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular enlargement raises some concern, but biomarkers and MMSE support normal cognition)",
  "timestamp": "2025-07-26T03:14:55.807539"
}