{
  "ptid_time": "067_S_0019_2006-12-08",
  "img_path": "/data/qiuhui/data/adni/images/067_S_0019/2006-12-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,966 mm³, 25.3% below the reference mean. With a Z-score of -0.58 (28.1th percentile), this represents normal volume ; hippocampal volume measures 6,356 mm³, 10.7% below the reference mean. With a Z-score of -0.98 (16.4th percentile), this represents normal volume ; whole brain volume measures 905,800 mm³, 7.1% below the reference mean. With a Z-score of -0.89 (18.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,144 mm³, 14.4% below the reference mean. With a Z-score of -0.88 (18.8th percentile), this represents normal volume ; fusiform gyrus volume measures 16,899 mm³, 0.7% below the reference mean. With a Z-score of -0.06 (47.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,556 mm³, 13.6% below the reference mean. With a Z-score of -1.18 (11.8th percentile), this represents mild atrophy. ",
  "text_data": "Age is 74.1 years. Gender is Female. Education: 18 years. MMSE: 28.0. Logical Memory: 19.0. APOEε4 alleles: 0.0. Biomarker levels: Total tau: 207.80 pg/mL (normal ); Phosphorylated tau: 17.13 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show mostly normal values, with only mild atrophy in the middle temporal gyrus. The MMSE score of 28 is within the normal range, and biomarkers (T-tau, P-tau) are normal. The absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T08:20:59.346266"
}