Focal Spot Fluoro

Focal spot size, measured in mm. directs image quality to a large extent. The smaller the focal spot, the better the image resolution. However, it is important to consider the image matrix of the system. For example, a 1k x 1k matrix with 0.3mm focal spot will produce approximately the same resolution as a 0.6mm focal spot at object-to-image distances of 40cm or less. Therefore, in C-arm imaging with 1k x 1k matrix, the performance of a 0.6mm is equal to a 0.3mm.

Real-time Fluoroscopy

 Mobile C-arms use standard real-time fluoroscopy. Generally fluoro techniques are usually 1.5 mA @ 60-100 kV  (.06 kW - .5 kW). This it can be concluded that most surgical imaging is accomplished at power outputs of less than 2 kW.  Standard C-arms, beginning with the OEC 9000, BV 25, and Ziehm 7000 series architectures have generators exceeding 2.5 kW and are thus sufficient for many procedures.


See HIGH LEVEL FLUORO