{
  "ptid_time": "067_S_4054_2012-06-13",
  "img_path": "/data/qiuhui/data/adni/images/067_S_4054/2012-06-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 16,652 mm³, 25.5% below the reference mean. With a Z-score of -0.64 (26.2th percentile), this represents normal volume ; hippocampal volume measures 8,224 mm³, 7.0% above the reference mean. With a Z-score of 0.79 (78.5th percentile), this represents normal volume ; whole brain volume measures 1,033,700 mm³, 0.4% above the reference mean. With a Z-score of 0.05 (52.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,840 mm³, 1.4% below the reference mean. With a Z-score of -0.11 (45.8th percentile), this represents normal volume ; fusiform gyrus volume measures 17,224 mm³, 5.4% below the reference mean. With a Z-score of -0.61 (27.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,010 mm³, 2.5% below the reference mean. With a Z-score of -0.22 (41.3th percentile), this represents normal volume . ",
  "text_data": "Age is 69.3 years. Gender is Female. Education: 19 years. MMSE: 30.0. MoCA: 26.0. Logical Memory: 19.0. 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 (Z-scores between -0.64 and 0.79). Cognitive screening (MMSE 30, MoCA 26) is intact, and there is no APOE4 genetic risk factor. No structural or clinical evidence of impairment.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T08:36:31.617097"
}