{
  "ptid_time": "094_S_4649_2013-05-28",
  "img_path": "/data/qiuhui/data/adni/images/094_S_4649/2013-05-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,519 mm³, 21.7% below the reference mean. With a Z-score of -0.51 (30.3th percentile), this represents normal volume ; hippocampal volume measures 9,261 mm³, 15.4% above the reference mean. With a Z-score of 1.54 (93.8th percentile), this represents moderate enlargement; whole brain volume measures 1,234,660 mm³, 8.8% above the reference mean. With a Z-score of 1.25 (89.4th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,833 mm³, 13.4% above the reference mean. With a Z-score of 0.93 (82.3th percentile), this represents normal volume ; fusiform gyrus volume measures 22,143 mm³, 11.2% above the reference mean. With a Z-score of 0.93 (82.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 25,170 mm³, 12.3% above the reference mean. With a Z-score of 1.01 (84.5th percentile), this represents mild enlargement. ",
  "text_data": "Age is 66.4 years. Gender is Male. Education: 18 years. MMSE: 27.0. MoCA: 29.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measures show no atrophy in key regions associated with Alzheimer's disease (e.g., hippocampus, entorhinal cortex, and fusiform gyrus are normal or enlarged). Cognitive scores (MMSE 27, MoCA 29) are within normal ranges, and the absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T10:33:28.583940"
}