{
  "ptid_time": "941_S_6094_2019-11-13",
  "img_path": "/data/qiuhui/data/adni/images/941_S_6094/2019-11-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,741 mm³, 47.5% below the reference mean. With a Z-score of -1.09 (13.8th percentile), this represents mild atrophy; hippocampal volume measures 7,434 mm³, 4.5% above the reference mean. With a Z-score of 0.41 (66.0th percentile), this represents normal volume ; whole brain volume measures 902,877 mm³, 7.4% below the reference mean. With a Z-score of -0.93 (17.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,398 mm³, 7.5% below the reference mean. With a Z-score of -0.46 (32.3th percentile), this represents normal volume ; fusiform gyrus volume measures 17,856 mm³, 5.0% above the reference mean. With a Z-score of 0.45 (67.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,141 mm³, 5.1% above the reference mean. With a Z-score of 0.44 (67.0th percentile), this represents normal volume . ",
  "text_data": "Age is 71.6 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 19.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular enlargement (mild atrophy) but otherwise normal volumes in key regions like the hippocampus, entorhinal cortex, and temporal lobes. Cognitive scores (MMSE 30, MoCA 29) are intact, and there is no APOE4 genetic risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:46:12.443968"
}