| 摘要 |
An improved X-ray tomography system having an X-ray source (34), X-ray detector assembly (36) and support means including a frame (22) supporting a rotatable drum (24) on which at least the source (34) is mounted for rotation in a scanning plane (42) about an axis (44) of rotation. The rotatable drum (24) is supported for centerless rotation on a cradle formed by resilient rollers (60, 62) with the top half of the drum (24) free to expand or contract as a result of temperature changes. The rollers (60, 62) are resilient so as to dampen vibration transfer between the frame (22) and drum (24).
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