{
  "ptid_time": "073_S_4393_2012-05-23",
  "img_path": "/data/qiuhui/data/adni/images/073_S_4393/2012-05-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,869 mm³, 17.3% below the reference mean. With a Z-score of -0.41 (34.0th percentile), this represents normal volume ; hippocampal volume measures 7,727 mm³, 2.2% above the reference mean. With a Z-score of 0.22 (58.6th percentile), this represents normal volume ; whole brain volume measures 1,301,570 mm³, 20.6% above the reference mean. With a Z-score of 2.67 (99.6th percentile), this represents significant enlargement; entorhinal cortex volume measures 5,019 mm³, 22.4% above the reference mean. With a Z-score of 1.52 (93.6th percentile), this represents moderate enlargement; fusiform gyrus volume measures 23,144 mm³, 22.9% above the reference mean. With a Z-score of 1.95 (97.4th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 22,356 mm³, 4.8% above the reference mean. With a Z-score of 0.43 (66.6th percentile), this represents normal volume . ",
  "text_data": "Age is 74.0 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-average volumes in all regions, including the hippocampus and entorhinal cortex, which are typically affected in Alzheimer's disease. Cognitive scores (MMSE 30, MoCA 28) are within the normal range, and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:45:07.348036"
}