区域体层照射角的范围是
A.0°
B.≤ 10°
C.11°~ 20°
D.21°~30°
E.31°~40°
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正确答案: B 答案分析: 用≤ 10°照射角进行体层摄影,可得到较厚的体层组织影像,此称为区域体层。
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