{
  "ptid_time": "031_S_4032_2012-05-17",
  "img_path": "/data/qiuhui/data/adni/images/031_S_4032/2012-05-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 16,701 mm³, 40.5% below the reference mean. With a Z-score of -0.93 (17.7th percentile), this represents normal volume ; hippocampal volume measures 6,901 mm³, 3.0% below the reference mean. With a Z-score of -0.28 (39.2th percentile), this represents normal volume ; whole brain volume measures 900,416 mm³, 7.6% below the reference mean. With a Z-score of -0.96 (16.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,338 mm³, 9.1% below the reference mean. With a Z-score of -0.56 (28.8th percentile), this represents normal volume ; fusiform gyrus volume measures 16,013 mm³, 5.9% below the reference mean. With a Z-score of -0.53 (29.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,432 mm³, 3.8% below the reference mean. With a Z-score of -0.33 (36.9th percentile), this represents normal volume . ",
  "text_data": "Age is 71.2 years. Gender is Female. Education: 14 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 20.0. 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 -0.28 and -0.96, percentiles between 16.9th and 39.2th). Cognitive scores (MMSE 29, MoCA 28) are intact, and there is no APOE4 genetic risk factor.  \n\nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T04:45:59.591853"
}