{
  "ptid_time": "941_S_4292_2012-04-11",
  "img_path": "/data/qiuhui/data/adni/images/941_S_4292/2012-04-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,491 mm³, 36.4% below the reference mean. With a Z-score of -0.87 (19.2th percentile), this represents normal volume ; hippocampal volume measures 7,665 mm³, 1.4% above the reference mean. With a Z-score of 0.14 (55.4th percentile), this represents normal volume ; whole brain volume measures 1,034,330 mm³, 4.2% below the reference mean. With a Z-score of -0.54 (29.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,768 mm³, 8.1% below the reference mean. With a Z-score of -0.55 (29.1th percentile), this represents normal volume ; fusiform gyrus volume measures 17,299 mm³, 8.2% below the reference mean. With a Z-score of -0.70 (24.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,116 mm³, 5.7% below the reference mean. With a Z-score of -0.52 (30.3th percentile), this represents normal volume . ",
  "text_data": "Age is 71.4 years. Gender is Male. Education: 15 years. MMSE: 27.0. MoCA: 25.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE 27, MoCA 25) are also within normal limits for age, and there is no APOE4 genetic risk factor.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T17:37:18.581527"
}