multileaf collimator

The hospital went ahead and radiated the patient, only to discover later that the multileaf collimator had been wide open.

Multileaf collimator, a tool used for shaping radiation beams in external-beam radiotherapy.

But instead of a multileaf collimator, it used a simpler beam-modifying device called a wedge, a metallic block that acts as a filter.

What she saw was horrifying: the multileaf collimator, which was supposed to focus the beam precisely on his tumor, was wide open.

The solution, the advertisement said, was a linear accelerator with 120 computer-controlled metal leaves, called a multileaf collimator, which could more precisely shape and modulate the radiation beam.

All treatments will be delivered using a high resolution multileaf collimator to shape the treatment beam so that it matches the shape and size of the tumor from every angle."

St James's investigators performed extensive clinical studies with High Dose Rate mode and Elekta's 160-leaf multileaf collimator (Agility™), both critical components of Versa HD.

The software required that three essential programming instructions be saved in sequence: first, the quantity or dose of radiation in the beam; then a digital image of the treatment area; and finally, instructions that guide the multileaf collimator.

The required decisions include how many radiation beams to use, which angles each will be delivered from, whether attenuating wedges be used, and which multileaf collimator configuration will be used to shape the radiation from each beam.

A multileaf collimator (MLC) is a device made up of individual "leaves" of a high atomic numbered material, usually tungsten, that can move independently in and out of the path of a particle beam in order to block it.

Fewer complications were seen with the use of a multileaf collimator.