{
  "ptid_time": "099_S_0291_2007-10-05",
  "img_path": "/data/qiuhui/data/adni/images/099_S_0291/2007-10-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 53,704 mm³, 14.2% above the reference mean. With a Z-score of 0.41 (66.0th percentile), this represents normal volume ; hippocampal volume measures 7,202 mm³, 3.4% above the reference mean. With a Z-score of 0.29 (61.4th percentile), this represents normal volume ; whole brain volume measures 965,628 mm³, 6.2% below the reference mean. With a Z-score of -0.81 (20.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,852 mm³, 2.9% below the reference mean. With a Z-score of -0.19 (42.3th percentile), this represents normal volume ; fusiform gyrus volume measures 17,809 mm³, 1.4% below the reference mean. With a Z-score of -0.12 (45.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,068 mm³, 0.5% below the reference mean. With a Z-score of -0.05 (48.2th percentile), this represents normal volume . ",
  "text_data": "Age is 80.9 years. Gender is Male. Education: 16 years. MMSE: 30.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 30/30 indicates no cognitive impairment, and while APOE4 is a risk factor for Alzheimer's, it does not confirm pathology in the absence of structural or functional deficits.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T10:54:06.440328"
}