{
  "ptid_time": "023_S_4448_2012-01-26",
  "img_path": "/data/qiuhui/data/adni/images/023_S_4448/2012-01-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,346 mm³, 40.3% below the reference mean. With a Z-score of -1.01 (15.7th percentile), this represents mild atrophy; hippocampal volume measures 8,270 mm³, 7.6% above the reference mean. With a Z-score of 0.86 (80.4th percentile), this represents normal volume ; whole brain volume measures 1,050,740 mm³, 2.1% above the reference mean. With a Z-score of 0.26 (60.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,332 mm³, 11.3% above the reference mean. With a Z-score of 0.87 (80.9th percentile), this represents normal volume ; fusiform gyrus volume measures 19,447 mm³, 6.8% above the reference mean. With a Z-score of 0.76 (77.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,409 mm³, 9.2% above the reference mean. With a Z-score of 0.82 (79.3th percentile), this represents normal volume . ",
  "text_data": "Age is 63.8 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Musculoskeletal; Allergies or Drug Sensitivities; Smoking; Malignancy; Major Surgical Procedures. MMSE: 29.0. MoCA: 26.0. Logical Memory: 19.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.06 SUVR (normal ); Total tau: 318.80 pg/mL (normal ); Phosphorylated tau: 26.82 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show mild ventricular atrophy but otherwise normal volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 29, MoCA 26) are within normal limits, and biomarkers (T-tau, P-tau, AV45) are normal. APOE4-negative status further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T03:05:06.883604"
}