{
  "ptid_time": "094_S_1241_2010-02-16",
  "img_path": "/data/qiuhui/data/adni/images/094_S_1241/2010-02-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,762 mm³, 4.6% below the reference mean. With a Z-score of -0.11 (45.7th percentile), this represents normal volume ; hippocampal volume measures 6,872 mm³, 9.1% below the reference mean. With a Z-score of -0.89 (18.8th percentile), this represents normal volume ; whole brain volume measures 1,116,240 mm³, 3.4% above the reference mean. With a Z-score of 0.44 (67.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,674 mm³, 14.0% above the reference mean. With a Z-score of 0.95 (82.9th percentile), this represents normal volume ; fusiform gyrus volume measures 19,925 mm³, 5.8% above the reference mean. With a Z-score of 0.49 (68.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,143 mm³, 5.6% below the reference mean. With a Z-score of -0.50 (30.7th percentile), this represents normal volume . ",
  "text_data": "Age is 75.1 years. Gender is Male. Education: 20 years. MMSE: 30.0. Logical Memory: 9.0. 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. The MMSE score of 30 is optimal, and the absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T10:17:30.410658"
}