{
  "ptid_time": "021_S_2077_2011-03-10",
  "img_path": "/data/qiuhui/data/adni/images/021_S_2077/2011-03-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,629 mm³, 22.1% below the reference mean. With a Z-score of -0.64 (26.1th percentile), this represents normal volume ; hippocampal volume measures 8,058 mm³, 15.6% above the reference mean. With a Z-score of 1.35 (91.2th percentile), this represents mild enlargement; whole brain volume measures 1,236,490 mm³, 20.1% above the reference mean. With a Z-score of 2.64 (99.6th percentile), this represents significant enlargement; entorhinal cortex volume measures 5,198 mm³, 31.0% above the reference mean. With a Z-score of 2.03 (97.9th percentile), this represents significant enlargement; fusiform gyrus volume measures 18,233 mm³, 0.9% above the reference mean. With a Z-score of 0.08 (53.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,894 mm³, 3.6% above the reference mean. With a Z-score of 0.32 (62.6th percentile), this represents normal volume . ",
  "text_data": "Age is 81.5 years. Gender is Male. Education: 20 years. MMSE: 28.0. MoCA: 26.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows significant enlargement in whole brain, hippocampal, and entorhinal cortex volumes, which is atypical for Alzheimer's pathology. Cognitive scores (MMSE 28, MoCA 26) are within normal limits for age, and the absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T01:37:29.669568"
}