{
  "ptid_time": "033_S_4176_2019-01-17",
  "img_path": "/data/qiuhui/data/adni/images/033_S_4176/2019-01-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 43,911 mm³, 10.2% below the reference mean. With a Z-score of -0.92 (17.9th percentile), this represents normal volume ; hippocampal volume measures 6,481 mm³, 1.8% above the reference mean. With a Z-score of 0.19 (57.6th percentile), this represents normal volume ; whole brain volume measures 1,046,620 mm³, 4.5% above the reference mean. With a Z-score of 0.77 (77.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,834 mm³, 22.3% above the reference mean. With a Z-score of 1.14 (87.4th percentile), this represents mild enlargement; fusiform gyrus volume measures 16,382 mm³, 2.8% below the reference mean. With a Z-score of -0.32 (37.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,173 mm³, 1.7% above the reference mean. With a Z-score of 0.26 (60.3th percentile), this represents normal volume . ",
  "text_data": "Age is 91.5 years. Gender is Male. Education: 20 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 14.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, whole brain, fusiform gyrus, middle temporal gyrus) are within normal ranges or mildly enlarged (entorhinal cortex). Cognitive scores (MMSE 29, MoCA 26) are intact for age, and APOE4 status (heterozygous) does not override the absence of structural or functional deficits.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T05:36:00.310137"
}