Question: a technique for studying brain structure that uses high-resolution x-rays is known as
[{'answer': 'A CT scan', 'provenance': [{'wikipedia_id': '3557219', 'title': 'Neuroimaging', 'start_paragraph_id': 49, 'start_character': 107, 'end_paragraph_id': 49, 'end_character': 116, 'bleu_score': 1.0, 'section': 'Section::::Advantages and Concerns of Neuroimaging Techniques.:Computed Tomography (CT) Scan.\n'}]}, {'provenance': [{'wikipedia_id': '3557219', 'title': 'Neuroimaging', 'start_paragraph_id': 49, 'start_character': 0, 'end_paragraph_id': 49, 'end_character': 788, 'bleu_score': 0.9669266300094901, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12197876250053488437}, 'section': 'Section::::Advantages and Concerns of Neuroimaging Techniques.:Computed Tomography (CT) Scan.\n'}]}]