{
  "ptid_time": "016_S_4952_2013-11-13",
  "img_path": "/data/qiuhui/data/adni/images/016_S_4952/2013-11-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,558 mm³, 48.1% below the reference mean. With a Z-score of -1.10 (13.5th percentile), this represents mild atrophy; hippocampal volume measures 7,615 mm³, 7.0% above the reference mean. With a Z-score of 0.65 (74.1th percentile), this represents normal volume ; whole brain volume measures 910,864 mm³, 6.5% below the reference mean. With a Z-score of -0.82 (20.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,567 mm³, 2.9% below the reference mean. With a Z-score of -0.18 (43.0th percentile), this represents normal volume ; fusiform gyrus volume measures 16,134 mm³, 5.2% below the reference mean. With a Z-score of -0.47 (31.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,852 mm³, 3.6% above the reference mean. With a Z-score of 0.31 (62.1th percentile), this represents normal volume . ",
  "text_data": "Age is 70.3 years. Gender is Female. Education: 12 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 15.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild ventricular atrophy but otherwise normal volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 30, MoCA 29) are intact, and there is no significant atrophy in Alzheimer’s-vulnerable regions. The presence of one APOE4 allele increases risk but does not indicate current impairment.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T00:36:36.858489"
}