{
  "ptid_time": "070_S_5040_2018-05-04",
  "img_path": "/data/qiuhui/data/adni/images/070_S_5040/2018-05-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,495 mm³, 33.7% below the reference mean. With a Z-score of -0.91 (18.1th percentile), this represents normal volume ; hippocampal volume measures 7,212 mm³, 11.0% above the reference mean. With a Z-score of 0.89 (81.2th percentile), this represents normal volume ; whole brain volume measures 888,936 mm³, 4.2% below the reference mean. With a Z-score of -0.51 (30.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,624 mm³, 4.7% above the reference mean. With a Z-score of 0.25 (59.9th percentile), this represents normal volume ; fusiform gyrus volume measures 17,365 mm³, 7.8% above the reference mean. With a Z-score of 0.59 (72.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,833 mm³, 6.6% below the reference mean. With a Z-score of -0.59 (27.7th percentile), this represents normal volume . ",
  "text_data": "Age is 81.4 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 24.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive screening scores (MMSE: 29, MoCA: 24) are within normal limits for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:05:48.007485"
}