{
  "ptid_time": "941_S_5193_2013-05-29",
  "img_path": "/data/qiuhui/data/adni/images/941_S_5193/2013-05-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,866 mm³, 18.5% below the reference mean. With a Z-score of -0.42 (33.6th percentile), this represents normal volume ; hippocampal volume measures 7,229 mm³, 1.6% above the reference mean. With a Z-score of 0.15 (55.9th percentile), this represents normal volume ; whole brain volume measures 1,028,560 mm³, 5.5% above the reference mean. With a Z-score of 0.70 (75.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,163 mm³, 13.3% above the reference mean. With a Z-score of 0.82 (79.4th percentile), this represents normal volume ; fusiform gyrus volume measures 16,199 mm³, 4.8% below the reference mean. With a Z-score of -0.44 (33.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,703 mm³, 7.6% below the reference mean. With a Z-score of -0.66 (25.3th percentile), this represents normal volume . ",
  "text_data": "Age is 72.5 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Psychiatric; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Musculoskeletal; Endocrine-Metabolic; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 29.0. MoCA: 26.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.00 SUVR (normal ); Amyloid beta: 1111.00 pg/mL (normal ); Total tau: 148.50 pg/mL (mild reduced); Phosphorylated tau: 12.32 pg/mL (mild reduced). ",
  "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 based on Z-scores and percentiles. Cognitive testing (MMSE 29, MoCA 26) is normal for age, and biomarkers (Aβ normal, T-tau/P-tau mildly reduced, AV45 normal) do not suggest Alzheimer's pathology.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:43:40.216681"
}