"Visible area" means that portion of the input surface of the image receptor over which incident X-ray photons produce a visible image.
Nev. Admin. Code § 459.532
NRS 459.201
"Visible area" means that portion of the input surface of the image receptor over which incident X-ray photons produce a visible image.
Nev. Admin. Code § 459.532
NRS 459.201