{
  "ptid_time": "018_S_4399_2012-08-29",
  "img_path": "/data/qiuhui/data/adni/images/018_S_4399/2012-08-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,546 mm³, 26.8% below the reference mean. With a Z-score of -0.61 (27.0th percentile), this represents normal volume ; whole brain volume measures 956,518 mm³, 1.9% below the reference mean. With a Z-score of -0.23 (40.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,320 mm³, 9.6% below the reference mean. With a Z-score of -0.59 (27.8th percentile), this represents normal volume ; fusiform gyrus volume measures 16,967 mm³, 0.3% below the reference mean. With a Z-score of -0.02 (49.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,248 mm³, 5.6% above the reference mean. With a Z-score of 0.49 (68.7th percentile), this represents normal volume . ",
  "text_data": "Age is 78.4 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 28.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE: 30, MoCA: 28) are also intact, with no indication of impairment. The presence of one APOE4 allele increases Alzheimer's risk but does not confirm pathology in the absence of clinical or structural deficits.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T00:57:47.570154"
}