{
  "ptid_time": "021_S_0159_2009-03-16",
  "img_path": "/data/qiuhui/data/adni/images/021_S_0159/2009-03-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,116 mm³, 32.1% below the reference mean. With a Z-score of -0.87 (19.3th percentile), this represents normal volume ; hippocampal volume measures 6,442 mm³, 0.8% below the reference mean. With a Z-score of -0.07 (47.4th percentile), this represents normal volume ; whole brain volume measures 906,710 mm³, 2.3% below the reference mean. With a Z-score of -0.28 (39.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,404 mm³, 1.7% below the reference mean. With a Z-score of -0.09 (46.4th percentile), this represents normal volume ; fusiform gyrus volume measures 15,855 mm³, 1.6% below the reference mean. With a Z-score of -0.12 (45.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,986 mm³, 5.8% below the reference mean. With a Z-score of -0.51 (30.3th percentile), this represents normal volume . ",
  "text_data": "Age is 80.9 years. Gender is Female. Education: 17 years. MMSE: 30.0. Logical Memory: 21.0. 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 (Z-scores between -0.87 and -0.07, percentiles between 19.3 and 47.4). The MMSE score of 30 is perfect, and there is no APOE4 genetic risk factor.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T01:21:32.573796"
}