An apparatus comprising: a support frame; a rotating gantry configured for rotation relative to the support frame; and a roller truck (206, 216) configured to at least partially support the rotating gantry and facilitate rotation of the rotating gantry relative to the support frame, the roller truck (206, 216) comprising: a plate comprising: a first layer defining a first surface; a second layer comprising a non-rotating dampening material for dampening vibrations caused by the rotation of the rotating gantry; and a third layer defining a second surface, the second layer situated between the first layer and the third layer; at least one roller axle operably coupled to the first surface; an attachment member operably coupled to the second surface, the attachment member configured to operably couple the roller truck (206, 216) to at least one of the support frame or the rotating gantry; and one or more rollers rotatably mounted on the at least one roller axle and configured to at least partially support the rotating gantry and to facilitate rotation of the rotating gantry relative to the support frame. a support frame; a rotating gantry configured for rotation relative to the support frame; and a roller truck (206, 216) configured to at least partially support the rotating gantry and facilitate rotation of the rotating gantry relative to the support frame, the roller truck (206, 216) comprising: a plate comprising: a first layer defining a first surface; a second layer comprising a non-rotating dampening material for dampening vibrations caused by the rotation of the rotating gantry; and a third layer defining a second surface, the second layer situated between the first layer and the third layer; at least one roller axle operably coupled to the first surface; an attachment member operably coupled to the second surface, the attachment member configured to operably couple the roller truck (206, 216) to at least one of the support frame or the rotating gantry; and one or more rollers rotatably mounted on the at least one roller axle and configured to at least partially support the rotating gantry and to facilitate rotation of the rotating gantry relative to the support frame. a plate comprising: a first layer defining a first surface; a second layer comprising a non-rotating dampening material for dampening vibrations caused by the rotation of the rotating gantry; and a third layer defining a second surface, the second layer situated between the first layer and the third layer; a first layer defining a first surface; a second layer comprising a non-rotating dampening material for dampening vibrations caused by the rotation of the rotating gantry; and a third layer defining a second surface, the second layer situated between the first layer and the third layer; at least one roller axle operably coupled to the first surface; an attachment member operably coupled to the second surface, the attachment member configured to operably couple the roller truck (206, 216) to at least one of the support frame or the rotating gantry; and one or more rollers rotatably mounted on the at least one roller axle and configured to at least partially support the rotating gantry and to facilitate rotation of the rotating gantry relative to the support frame.