{
  "ptid_time": "007_S_1206_2009-02-12",
  "img_path": "/data/qiuhui/data/adni/images/007_S_1206/2009-02-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 43,517 mm³, 13.0% above the reference mean. With a Z-score of 0.31 (62.2th percentile), this represents normal volume ; hippocampal volume measures 7,719 mm³, 2.1% above the reference mean. With a Z-score of 0.21 (58.2th percentile), this represents normal volume ; whole brain volume measures 1,148,540 mm³, 6.4% above the reference mean. With a Z-score of 0.83 (79.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,051 mm³, 1.2% below the reference mean. With a Z-score of -0.08 (46.7th percentile), this represents normal volume ; fusiform gyrus volume measures 20,582 mm³, 9.3% above the reference mean. With a Z-score of 0.79 (78.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,281 mm³, 9.1% above the reference mean. With a Z-score of 0.82 (79.3th percentile), this represents normal volume . ",
  "text_data": "Age is 74.9 years. Gender is Male. Education: 14 years. MMSE: 30.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Total tau: 285.10 pg/mL (normal ); Phosphorylated tau: 23.69 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 based on Z-scores and percentiles. The MMSE score of 30 is optimal, and biomarkers (T-tau, P-tau) are normal. No APOE4 risk allele is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T21:52:47.386850"
}