{
  "ptid_time": "036_S_4389_2017-11-08",
  "img_path": "/data/qiuhui/data/adni/images/036_S_4389/2017-11-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 37,521 mm³, 20.2% below the reference mean. With a Z-score of -0.59 (27.9th percentile), this represents normal volume ; hippocampal volume measures 8,211 mm³, 17.8% above the reference mean. With a Z-score of 1.54 (93.8th percentile), this represents moderate enlargement; whole brain volume measures 1,145,840 mm³, 11.3% above the reference mean. With a Z-score of 1.49 (93.1th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,700 mm³, 6.8% below the reference mean. With a Z-score of -0.44 (32.9th percentile), this represents normal volume ; fusiform gyrus volume measures 18,439 mm³, 2.1% above the reference mean. With a Z-score of 0.18 (57.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,155 mm³, 9.8% above the reference mean. With a Z-score of 0.88 (81.1th percentile), this represents normal volume . ",
  "text_data": "Age is 87.1 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 25.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show normal or above-average volumes in most regions, including the hippocampus and whole brain, with only mild reductions in the entorhinal cortex. Cognitive scores (MMSE 29, MoCA 25) are within normal ranges for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n\nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T06:12:59.712293"
}