{
  "ptid_time": "941_S_6058_2019-08-14",
  "img_path": "/data/qiuhui/data/adni/images/941_S_6058/2019-08-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,535 mm³, 48.2% below the reference mean. With a Z-score of -1.10 (13.5th percentile), this represents mild atrophy; hippocampal volume measures 6,991 mm³, 1.7% below the reference mean. With a Z-score of -0.16 (43.7th percentile), this represents normal volume ; whole brain volume measures 1,040,140 mm³, 6.7% above the reference mean. With a Z-score of 0.85 (80.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,920 mm³, 6.7% above the reference mean. With a Z-score of 0.41 (66.0th percentile), this represents normal volume ; fusiform gyrus volume measures 17,612 mm³, 3.5% above the reference mean. With a Z-score of 0.32 (62.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,428 mm³, 6.6% above the reference mean. With a Z-score of 0.57 (71.6th percentile), this represents normal volume . ",
  "text_data": "Age is 70.3 years. Gender is Female. Education: 13 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.01 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy but otherwise normal volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 29, MoCA 28) are within normal limits, and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:45:22.648558"
}