{
  "ptid_time": "073_S_4393_2012-11-28",
  "img_path": "/data/qiuhui/data/adni/images/073_S_4393/2012-11-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,077 mm³, 14.1% below the reference mean. With a Z-score of -0.34 (36.8th percentile), this represents normal volume ; hippocampal volume measures 7,538 mm³, 0.3% below the reference mean. With a Z-score of -0.03 (48.9th percentile), this represents normal volume ; whole brain volume measures 1,295,520 mm³, 20.0% above the reference mean. With a Z-score of 2.60 (99.5th percentile), this represents significant enlargement; entorhinal cortex volume measures 5,265 mm³, 28.4% above the reference mean. With a Z-score of 1.93 (97.3th percentile), this represents moderate enlargement; fusiform gyrus volume measures 22,584 mm³, 19.9% above the reference mean. With a Z-score of 1.69 (95.5th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 21,791 mm³, 2.1% above the reference mean. With a Z-score of 0.19 (57.6th percentile), this represents normal volume . ",
  "text_data": "Age is 74.5 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 25.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show normal or above-average volumes in key regions, including the hippocampus and entorhinal cortex, which are typically affected in Alzheimer's. Cognitive scores (MMSE 30, MoCA 25) are within normal ranges, and the absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T09:45:13.767292"
}