{
  "ptid_time": "116_S_4010_2012-04-18",
  "img_path": "/data/qiuhui/data/adni/images/116_S_4010/2012-04-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,930 mm³, 13.8% above the reference mean. With a Z-score of 0.32 (62.4th percentile), this represents normal volume ; whole brain volume measures 907,885 mm³, 6.9% below the reference mean. With a Z-score of -0.86 (19.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,502 mm³, 4.7% below the reference mean. With a Z-score of -0.29 (38.8th percentile), this represents normal volume ; fusiform gyrus volume measures 18,402 mm³, 8.2% above the reference mean. With a Z-score of 0.74 (77.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,978 mm³, 6.2% below the reference mean. With a Z-score of -0.54 (29.5th percentile), this represents normal volume . ",
  "text_data": "Age is 71.8 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive screening scores (MMSE 30, MoCA 29) are intact, and there is no APOE4 genetic risk factor.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T12:05:57.790150"
}