{
  "ptid_time": "135_S_6104_2019-11-18",
  "img_path": "/data/qiuhui/data/adni/images/135_S_6104/2019-11-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,100 mm³, 34.8% below the reference mean. With a Z-score of -0.83 (20.2th percentile), this represents normal volume ; hippocampal volume measures 7,752 mm³, 2.5% above the reference mean. With a Z-score of 0.25 (59.8th percentile), this represents normal volume ; whole brain volume measures 1,132,190 mm³, 4.9% above the reference mean. With a Z-score of 0.63 (73.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,920 mm³, 20.0% above the reference mean. With a Z-score of 1.36 (91.2th percentile), this represents mild enlargement; fusiform gyrus volume measures 20,925 mm³, 11.1% above the reference mean. With a Z-score of 0.94 (82.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,961 mm³, 2.9% above the reference mean. With a Z-score of 0.26 (60.3th percentile), this represents normal volume . ",
  "text_data": "Age is 71.0 years. Gender is Male. Education: 20 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 12.0. APOEε4 alleles: 1.0. Biomarker levels: Flobetaben (FBB): 1.27 SUVR (significant elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (hippocampal, whole brain, fusiform gyrus, middle temporal gyrus) are within normal ranges or mildly enlarged (entorhinal cortex), with no significant atrophy. Cognitive scores (MMSE 29, MoCA 28) are well within normal limits, and APOE4 status does not override the absence of structural or functional deficits.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T15:49:11.874340"
}