{
  "ptid_time": "073_S_0089_2009-02-02",
  "img_path": "/data/qiuhui/data/adni/images/073_S_0089/2009-02-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,703 mm³, 27.7% below the reference mean. With a Z-score of -0.66 (25.5th percentile), this represents normal volume ; hippocampal volume measures 7,653 mm³, 4.7% below the reference mean. With a Z-score of -0.47 (32.1th percentile), this represents normal volume ; whole brain volume measures 1,072,640 mm³, 5.5% below the reference mean. With a Z-score of -0.77 (22.0th percentile), this represents normal volume ; entorhinal cortex volume measures 4,525 mm³, 6.1% above the reference mean. With a Z-score of 0.43 (66.5th percentile), this represents normal volume ; fusiform gyrus volume measures 21,275 mm³, 6.9% above the reference mean. With a Z-score of 0.57 (71.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,373 mm³, 4.3% above the reference mean. With a Z-score of 0.35 (63.8th percentile), this represents normal volume . ",
  "text_data": "Age is 68.1 years. Gender is Male. Education: 20 years. MMSE: 30.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (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 is optimal, and the absence of APOE4 alleles further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T09:28:37.933006"
}