| 摘要 |
Devices and methods for reproducibly positioning a subject are described. A device may include a first parallax bar assembly having a first wire and a second wire spaced a first distance and parallel to the first wire, and a second parallax bar assembly having a third wire and a fourth wire spaced a second distance and parallel to the third wire. The first and second wires are substantially perpendicular to the third and fourth wires, and an imaginary straight line intersects the first, second, third, and fourth wires. Some devices may include a chair and a headrest for positioning a subject. |
