TOMOTHERAPY®

The TomoTherapy® System: This fully integrated 3D conformal radiation therapy and IMRT system gives clinicians the ability to treat the entire spectrum of radiation therapy patients. Clinicians can provide each patient with exceptional, individualized treatment using daily CT imaging and optimized beamlet-based delivery.

Created to make personalized treatments an option for radiation therapy, the TomoTherapy® H™ Series offers interactive planning and efficient delivery of highly sculpted doses for personalized and consistent treatments. Seamless daily CT image guidance enables precise patient positioning, margin reduction, adaptive planning and pinpoint dose accuracy for every radiation therapy patient.

TOMOHELICALTM

TomoHelicalTM, the TomoTherapy® System’s flagship helical mode of treatment that has been in use for almost a decade, combines 360 degree fan-beam delivery of intensitymodulated radiation therapy (IMRT) and megavoltage CT (MVCT) imaging for a goldstandard treatment and targeting of complex tumors. During treatment delivery, the linear accelerator completes multiple 360-degree rotations around the patient while the couch passes through the center bore of the system. And, with its continuous, high dose rate delivery, beam-on times are short compared with many other types of radiation treatment.

TomoHelical gives you the ability to intricately modulate radiation dose intensity, along with delivery angle across three dimensions, to produce conformal dose distributions. It enables the delivery of thousands of narrow beamlets, which are individually optimized to target the tumor. The TomoHelical mode maximizes conformality and uniformity of dose to the tumor while minimizing exposure to healthy tissue. With TomoHelical, the user is able to create a treatment plan that defines dose goals for the targeted tumor, dose constraints for structures that must be avoided, the level of modulation for the plan and the fractionation schedule.

TOMODIRECTTM

The TomoTherapy® System’s TomoDirectTM modality offers a discrete-angle, nonrotational delivery option, with 3D conformal radiation therapy (3DCRT) capabilities, for highly efficient treatment of routine indications. TomoDirect allows creation of treatment plans that include between two and 12 targetspecific gantry angles, as well as user-defined levels of modulation for the plan, including a 3D delivery mode. Treatment planning is completed rapidly due to the power of the system’s computing platform, the VoLOTM planning system. During treatment delivery, all beams for each target are delivered sequentially with the couch passing through the center bore of the system at an appropriate speed for each gantry angle

CT TRUE MOTION MAMAGEMENT

CT technology is a primary tool in the diagnosis of cancer, as well as identifying the location of tumors and organs-at-risk when developing a patient treatment plan. Because of its importance, CT technology is an integral part of the TomoTherapy® System. The TomoTherapy System’s CTrueTM technology offers the only imaging solution that supports true image guidance and adaptive planning, and can be used for every patient’s treatment, every day.

CTrue images play a critical role in patient set-up and positioning. With every treatment fraction, CTrue enables clinicians to see where the anatomy is compared to where it’s supposed to be, based on accurate, consistent 3D images. Then, with automated image registration, clinicians can quickly determine if adjustments are required to ensure that radiation is delivered precisely to the target during treatment.

CTrue images yield accurate CT numbers regardless of patient size and shape. The images are not only consistent in quality, but can be used for accurate, heterogeneous dose calculations. Additionally, the image artifacts that occur in the presence of high atomic number materials in conventional kVCT images are substantially reduced in CTrue images.