{
  "ptid_time": "037_S_0327_2006-04-19",
  "img_path": "/data/qiuhui/data/adni/images/037_S_0327/2006-04-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 52,981 mm³, 37.6% above the reference mean. With a Z-score of 0.90 (81.6th percentile), this represents normal volume ; hippocampal volume measures 8,209 mm³, 8.6% above the reference mean. With a Z-score of 0.84 (79.9th percentile), this represents normal volume ; whole brain volume measures 1,084,630 mm³, 0.5% above the reference mean. With a Z-score of 0.06 (52.5th percentile), this represents normal volume ; entorhinal cortex volume measures 5,064 mm³, 23.5% above the reference mean. With a Z-score of 1.59 (94.4th percentile), this represents moderate enlargement; fusiform gyrus volume measures 19,490 mm³, 3.5% above the reference mean. With a Z-score of 0.29 (61.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,309 mm³, 4.5% above the reference mean. With a Z-score of 0.41 (65.9th percentile), this represents normal volume . ",
  "text_data": "Age is 70.0 years. Gender is Male. Education: 16 years. MMSE: 29.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 1405.00 pg/mL (normal ); Total tau: 188.30 pg/mL (normal ); Phosphorylated tau: 16.71 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (including hippocampal, whole brain, and key AD-related regions) are within or above the reference range, with no significant atrophy. Biomarkers (Aβ, T-tau, P-tau) are normal, and cognitive performance (MMSE 29/30) is intact. APOE4-negative status further reduces AD risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T06:26:25.820283"
}