{
  "ptid_time": "135_S_6622_2018-11-02",
  "img_path": "/data/qiuhui/data/adni/images/135_S_6622/2018-11-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 30,664 mm³, 20.4% below the reference mean. With a Z-score of -0.49 (31.3th percentile), this represents normal volume ; hippocampal volume measures 8,080 mm³, 6.9% above the reference mean. With a Z-score of 0.67 (74.9th percentile), this represents normal volume ; whole brain volume measures 1,055,550 mm³, 2.2% below the reference mean. With a Z-score of -0.29 (38.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,869 mm³, 5.6% below the reference mean. With a Z-score of -0.38 (35.1th percentile), this represents normal volume ; fusiform gyrus volume measures 17,819 mm³, 5.4% below the reference mean. With a Z-score of -0.46 (32.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,585 mm³, 5.8% above the reference mean. With a Z-score of 0.52 (70.0th percentile), this represents normal volume . ",
  "text_data": "Age is 76.8 years. Gender is Male. Education: 16 years. Handedness: Right. Race: White. MMSE: 26.0. MoCA: 23.0. Logical Memory: 9.0. APOEε4 alleles: 1.0. Biomarker levels: Flobetaben (FBB): 0.99 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "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. Cognitive scores (MMSE 26, MoCA 23) are slightly below optimal but not in the dementia range, and APOE4 status (heterozygous) suggests some genetic risk but is not diagnostic.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (cognitive scores are borderline, but structural imaging is unremarkable)",
  "timestamp": "2025-07-26T15:53:49.724483"
}