Patent ID: 7382857

Claim:
An apparatus for applying x-rays to an interior surface of a body cavity, said apparatus comprising: A) a catheter assembly, including: a) a catheter body member extending from a proximal end onto a distal end, the catheter body member defining two or more interior channels between said proximal end and said distal end; and b) two or more inflatable elements affixed to said catheter body member at points along said catheter body member, and defining and inner region disposed about said catheter body member and an outer region disposed about said inner region, said inflatable element elements when inflated defining a predetermined surface contour; B) one or more flexible probe assemblies, each flexible probe assembly slidably positionable within at least one of said interior channels, each probe assembly including a transmission path having a proximal end and a distal end, said transmission path being adapted for transmitting an activating energy, which is incident on said proximal end, to said distal end; C) an x-ray generator assembly coupled to a distal end of each probe assembly, the x-ray generator assembly including an x-ray source configured to generate x-ray radiation wherein at least one of said inflatable elements is filled with a radiation absorbing fluid to control absorption of said generated x-ray radiation; wherein said two or more interior channels are each adapted to receive one or more of said flexible probe assemblies.