{
  "ptid_time": "082_S_4428_2019-06-27",
  "img_path": "/data/qiuhui/data/adni/images/082_S_4428/2019-06-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 44,805 mm³, 4.7% below the reference mean. With a Z-score of -0.14 (44.6th percentile), this represents normal volume ; hippocampal volume measures 6,725 mm³, 3.5% below the reference mean. With a Z-score of -0.30 (38.2th percentile), this represents normal volume ; whole brain volume measures 1,113,720 mm³, 8.2% above the reference mean. With a Z-score of 1.08 (85.9th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,935 mm³, 0.9% below the reference mean. With a Z-score of -0.06 (47.8th percentile), this represents normal volume ; fusiform gyrus volume measures 22,166 mm³, 22.7% above the reference mean. With a Z-score of 1.97 (97.5th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 24,040 mm³, 19.2% above the reference mean. With a Z-score of 1.72 (95.7th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 80.1 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, entorhinal cortex) are within normal ranges or slightly above/below the mean, with no significant atrophy. Cognitive scores (MMSE 29, MoCA 26) are within normal limits for age, and the absence of APOE4 further reduces Alzheimer's risk. Enlargement in fusiform gyrus and middle temporal gyrus may reflect individual variability rather than pathology.  \n\nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T10:07:49.315368"
}