{
  "ptid_time": "141_S_0767_2007-03-03",
  "img_path": "/data/qiuhui/data/adni/images/141_S_0767/2007-03-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,798 mm³, 25.9% below the reference mean. With a Z-score of -0.59 (27.7th percentile), this represents normal volume ; hippocampal volume measures 6,253 mm³, 12.1% below the reference mean. With a Z-score of -1.11 (13.3th percentile), this represents mild atrophy; whole brain volume measures 934,076 mm³, 4.2% below the reference mean. With a Z-score of -0.52 (30.0th percentile), this represents normal volume ; entorhinal cortex volume measures 4,052 mm³, 10.3% above the reference mean. With a Z-score of 0.63 (73.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,344 mm³, 1.9% above the reference mean. With a Z-score of 0.18 (57.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,141 mm³, 5.4% below the reference mean. With a Z-score of -0.47 (32.1th percentile), this represents normal volume . ",
  "text_data": "Age is 73.5 years. Gender is Female. Education: 16 years. MMSE: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The hippocampal volume shows mild atrophy (Z-score -1.11, 13.3th percentile), while other brain regions, including ventricular, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus volumes, are within normal ranges. The MMSE score of 29 is intact, and there is no APOE4 genetic risk factor.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (Hippocampal atrophy may suggest early changes, but cognitive performance remains intact, and other markers are normal.)",
  "timestamp": "2025-07-26T16:48:15.199660"
}