{
  "ptid_time": "020_S_1288_2007-03-13",
  "img_path": "/data/qiuhui/data/adni/images/020_S_1288/2007-03-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 10,857 mm³, 56.6% below the reference mean. With a Z-score of -0.75 (22.7th percentile), this represents normal volume ; hippocampal volume measures 8,457 mm³.; whole brain volume measures 1,228,660 mm³, 3.1% above the reference mean. With a Z-score of 0.57 (71.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,852 mm³, 3.8% below the reference mean. With a Z-score of -0.33 (37.0th percentile), this represents normal volume ; fusiform gyrus volume measures 21,479 mm³, 3.1% above the reference mean. With a Z-score of 0.46 (67.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,149 mm³.. ",
  "text_data": "Age is 59.9 years. Gender is Male. Education: 20 years. Handedness: Right. Race: White. Medical history: Endocrine-Metabolic; Major Surgical Procedures. MMSE: 30.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 30/30 indicates no cognitive impairment, and the absence of APOE4 alleles reduces genetic risk for Alzheimer’s.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T01:12:36.087772"
}