{
  "ptid_time": "022_S_0130_2009-03-03",
  "img_path": "/data/qiuhui/data/adni/images/022_S_0130/2009-03-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,538 mm³, 28.5% below the reference mean. With a Z-score of -0.68 (24.7th percentile), this represents normal volume ; hippocampal volume measures 7,287 mm³, 3.6% below the reference mean. With a Z-score of -0.35 (36.3th percentile), this represents normal volume ; whole brain volume measures 1,157,730 mm³, 7.3% above the reference mean. With a Z-score of 0.94 (82.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,939 mm³, 3.9% below the reference mean. With a Z-score of -0.27 (39.5th percentile), this represents normal volume ; fusiform gyrus volume measures 17,886 mm³, 5.1% below the reference mean. With a Z-score of -0.43 (33.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 27,063 mm³, 26.8% above the reference mean. With a Z-score of 2.41 (99.2th percentile), this represents significant enlargement. ",
  "text_data": "Age is 76.1 years. Gender is Male. Education: 16 years. MMSE: 29.0. Logical Memory: 19.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 509.70 pg/mL (mild reduced); Total tau: 303.20 pg/mL (normal ); Phosphorylated tau: 26.53 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus) are within normal ranges, except for the middle temporal gyrus, which shows significant enlargement. Cognitive testing (MMSE: 29) is normal, and biomarkers (Aβ mildly reduced, T-tau and P-tau normal) do not strongly suggest Alzheimer's pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T02:04:16.355468"
}