{
  "ptid_time": "041_S_5082_2014-02-17",
  "img_path": "/data/qiuhui/data/adni/images/041_S_5082/2014-02-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,343 mm³, 10.8% below the reference mean. With a Z-score of -0.26 (39.8th percentile), this represents normal volume ; hippocampal volume measures 7,814 mm³, 3.4% above the reference mean. With a Z-score of 0.33 (62.9th percentile), this represents normal volume ; whole brain volume measures 1,057,300 mm³, 2.0% below the reference mean. With a Z-score of -0.27 (39.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,824 mm³, 6.7% below the reference mean. With a Z-score of -0.46 (32.4th percentile), this represents normal volume ; fusiform gyrus volume measures 19,676 mm³, 4.4% above the reference mean. With a Z-score of 0.38 (64.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 25,926 mm³, 21.5% above the reference mean. With a Z-score of 1.93 (97.3th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 70.2 years. Gender is Male. Education: 16 years. MMSE: 29.0. MoCA: 27.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus) are within normal ranges, with only the middle temporal gyrus showing moderate enlargement, which is not typically associated with Alzheimer's pathology. Cognitive scores (MMSE 29, MoCA 27) are within normal limits, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:24:45.579320"
}