{
  "ptid_time": "136_S_4269_2011-10-31",
  "img_path": "/data/qiuhui/data/adni/images/136_S_4269/2011-10-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,098 mm³, 30.3% above the reference mean. With a Z-score of 0.76 (77.6th percentile), this represents normal volume ; hippocampal volume measures 8,802 mm³, 14.5% above the reference mean. With a Z-score of 1.63 (94.9th percentile), this represents moderate enlargement; whole brain volume measures 1,044,260 mm³, 1.5% above the reference mean. With a Z-score of 0.18 (57.2th percentile), this represents normal volume ; entorhinal cortex volume measures 5,292 mm³, 35.9% above the reference mean. With a Z-score of 2.78 (99.7th percentile), this represents significant enlargement; fusiform gyrus volume measures 17,183 mm³, 5.6% below the reference mean. With a Z-score of -0.64 (26.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,385 mm³, 5.5% below the reference mean. With a Z-score of -0.49 (31.2th percentile), this represents normal volume . ",
  "text_data": "Age is 65.6 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 10.0. Laboratory findings: Eosinophils: 0.40 (significant elevated); Eosinophils: 5.90 (significant elevated). APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ); Amyloid beta: 1157.00 pg/mL (normal ); Total tau: 188.40 pg/mL (normal ); Phosphorylated tau: 17.48 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows normal or above-average volumes in most regions, including the hippocampus and entorhinal cortex, which are typically affected in Alzheimer's. The cognitive scores (MMSE 30, MoCA 27) are within normal ranges, and biomarkers (Aβ, tau, AV45) are normal, ruling out significant amyloid or tau pathology.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:**",
  "timestamp": "2025-07-26T16:06:28.007013"
}