{
  "ptid_time": "041_S_4060_2011-06-01",
  "img_path": "/data/qiuhui/data/adni/images/041_S_4060/2011-06-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 41,246 mm³, 12.3% below the reference mean. With a Z-score of -0.36 (36.1th percentile), this represents normal volume ; hippocampal volume measures 7,902 mm³, 13.4% above the reference mean. With a Z-score of 1.16 (87.7th percentile), this represents mild enlargement; whole brain volume measures 1,093,460 mm³, 6.2% above the reference mean. With a Z-score of 0.82 (79.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,758 mm³, 19.9% above the reference mean. With a Z-score of 1.30 (90.3th percentile), this represents mild enlargement; fusiform gyrus volume measures 17,262 mm³, 4.4% below the reference mean. With a Z-score of -0.39 (35.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,261 mm³, 5.4% above the reference mean. With a Z-score of 0.48 (68.6th percentile), this represents normal volume . ",
  "text_data": "Age is 84.4 years. Gender is Male. Education: 18 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Major Surgical Procedures. MMSE: 30.0. MoCA: 26.0. Logical Memory: 15.0. Laboratory findings: Total Bilirubin: 1.00 (profound elevated); Creatine Kinase: 336.00 (profound elevated); Creatinine (Rate Blanked): 1.40 (significant elevated); ALT (SGPT): 34.00 (significant elevated); AST (SGOT): 41.00 (profound elevated). APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.12 SUVR (normal ); Amyloid beta: 737.50 pg/mL (normal ); Total tau: 164.80 pg/mL (normal ); Phosphorylated tau: 14.75 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or mildly enlarged structures, with no significant atrophy in regions typically affected in Alzheimer's (e.g., hippocampus is enlarged, not reduced). Biomarkers (Aβ, tau, AV45) are normal, and cognitive scores (MMSE 30, MoCA 26) are within normal limits for age, though MoCA is slightly lower than MMSE. APOE4-negative status further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:12:00.823855"
}