Source-skin distance (SSD) definition
Source-skin distance (SSD) means the distance from the source to the center of the entrant x-ray field in the plane tangent to the patient skin surface.
Source-skin distance (SSD) means the distance between the source and the skin of the patient.
Source-skin distance (SSD) means the distance measured along the central ray from the center of the front surface of the radiation source to the surface of the irradiated object or patient. [See also Target-skin distance]
More Definitions of Source-skin distance (SSD)
Source-skin distance (SSD) means target-skin distance;
Source-skin distance (SSD) means the distance from the source to the center