{
  "ptid_time": "009_S_5147_2013-07-22",
  "img_path": "/data/qiuhui/data/adni/images/009_S_5147/2013-07-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,188 mm³, 42.4% below the reference mean. With a Z-score of -1.02 (15.5th percentile), this represents mild atrophy; hippocampal volume measures 7,266 mm³, 3.9% below the reference mean. With a Z-score of -0.38 (35.3th percentile), this represents normal volume ; whole brain volume measures 1,062,430 mm³, 1.6% below the reference mean. With a Z-score of -0.20 (41.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,046 mm³, 1.3% below the reference mean. With a Z-score of -0.09 (46.4th percentile), this represents normal volume ; fusiform gyrus volume measures 20,077 mm³, 6.6% above the reference mean. With a Z-score of 0.56 (71.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,578 mm³, 5.8% above the reference mean. With a Z-score of 0.52 (69.9th percentile), this represents normal volume . ",
  "text_data": "Age is 76.5 years. Gender is Male. Education: 20 years. Handedness: Right. Race: White. Medical history: Psychiatric; Neurologic; Cardiovascular; Respiratory; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 30.0. MoCA: 27.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.01 SUVR (normal ); Total tau: 263.10 pg/mL (normal ); Phosphorylated tau: 26.23 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows only mild ventricular atrophy (Z-score -1.02) with all other regions (hippocampus, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) within normal ranges. Cognitive testing (MMSE 30, MoCA 27) is intact, and biomarkers (T-tau, P-tau, AV45) are normal.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T22:27:17.747002"
}