Question about fiducial markers?
Not a doctor by the way, but I am doctor adjacent. From my understanding, fiducials are commonly placed prior to RT in many parts of the body that are relatively immobile, like the prostate, but they aren't always placed in the mobile anatomy like the lungs. Wouldn't fiducial markers have more benefit in anatomy that moves a lot... like the lungs? I know a lot of the LINAC manufacturers claim that they aren't needed in the lung with the latest technology, but I've heard several clinicians say the opposite too and that without fiducials, you cannot see the target lesion intrafractionally, which I agree with when those folks show me images. I'm just trying to make sense of this. Is it because placing the fiducials in the lung require it to be done in another procedure, like in IR or in a nav bronch by a pulmonologist? Help me understand.