{
  "ptid_time": "027_S_5288_2013-09-18",
  "img_path": "/data/qiuhui/data/adni/images/027_S_5288/2013-09-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 47,737 mm³, 29.1% above the reference mean. With a Z-score of 0.79 (78.4th percentile), this represents normal volume ; hippocampal volume measures 6,987 mm³, 7.6% above the reference mean. With a Z-score of 0.61 (72.8th percentile), this represents normal volume ; whole brain volume measures 994,713 mm³, 7.2% above the reference mean. With a Z-score of 0.86 (80.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,440 mm³, 0.7% below the reference mean. With a Z-score of -0.04 (48.6th percentile), this represents normal volume ; fusiform gyrus volume measures 19,223 mm³, 19.3% above the reference mean. With a Z-score of 1.45 (92.7th percentile), this represents mild enlargement; middle temporal gyrus volume measures 20,822 mm³, 15.5% above the reference mean. With a Z-score of 1.38 (91.6th percentile), this represents mild enlargement. ",
  "text_data": "Age is 81.9 years. Gender is Female. Education: 18 years. Handedness: Right. Race: White. Medical history: Neurologic; Cardiovascular; Dermatologic-Connective Tissue; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Smoking; Major Surgical Procedures. MMSE: 30.0. MoCA: 29.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.04 SUVR (normal ); Total tau: 300.10 pg/mL (normal ); Phosphorylated tau: 26.59 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges or show mild enlargement, with no significant atrophy. Cognitive scores (MMSE 30, MoCA 29) are intact, and biomarkers (T-tau, P-tau, AV45) are normal. APOE4-negative status further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T04:11:45.865529"
}