{
  "ptid_time": "109_S_4455_2012-10-04",
  "img_path": "/data/qiuhui/data/adni/images/109_S_4455/2012-10-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,179 mm³, 12.8% below the reference mean. With a Z-score of -0.30 (38.0th percentile), this represents normal volume ; hippocampal volume measures 7,707 mm³, 4.0% below the reference mean. With a Z-score of -0.40 (34.5th percentile), this represents normal volume ; whole brain volume measures 1,156,210 mm³, 1.9% above the reference mean. With a Z-score of 0.27 (60.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,499 mm³, 5.5% above the reference mean. With a Z-score of 0.38 (64.9th percentile), this represents normal volume ; fusiform gyrus volume measures 21,078 mm³, 5.9% above the reference mean. With a Z-score of 0.49 (68.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,217 mm³, 3.6% above the reference mean. With a Z-score of 0.30 (61.6th percentile), this represents normal volume . ",
  "text_data": "Age is 64.7 years. Gender is Male. Education: 18 years. MMSE: 26.0. MoCA: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges, with Z-scores close to zero. Cognitive scores (MMSE 26, MoCA 30) are also within normal limits, and the absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T11:33:41.663447"
}