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Radiation Oncology

Stereotactic Body Radiotherapy (SBRT)

Stereotactic body radiation therapy (SBRT), intensity-modulated radiation therapy (IMRT), and volumetric modulated arc therapy (VMAT) are advanced external beam radiation therapies used to treat cancers on linear accelerators. The tumor is targeted with high doses of radiation with high precision ensuring radiation delivery to tumor while minimizing damage to surrounding healthy organs and tissue. These technologies employ sophisticated software to accurately target and conform to the shape of the tumor.

Stereotactic body radiotherapy (SBRT) targets small and well-defined tumors within the body. With SBRT we improve local control and limit side effects. The technique may be used for small lung cancers or metastases; small, isolated liver tumors or bony tumors; tumors in sites that may not be appropriate for surgical resection; or in patients who would not be surgical candidates. SBRT is associated with few side effects because the treatment field is generally very small, and treatment is precisely delivered. At Froedtert & the Medical College of Wisconsin, the delivery of SBRT involves 4DCT or MRI based treatment planning; online MRI or CT guidance using MR-linac, Radixact TomoTherapy, Versa HD linac with cone beam CT;or Mevion proton with CT-on-Rails (coming soon), real-time motion tracking, respiration gating, and surface-guided (VisionRT) motion monitoring.

Elekta Versa HD
Elekta Infinity
Accuray Radixact
Elekta Unity

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Action 3D-Printed Bolus

Two therapists are placing a head mask to control head movement.

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VA SRS Linac

The Elekta Versa linac with a robotic Hexapod treatment table capability, allows for six degrees of freedom for patient positioning.

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Stereotactic Radiosurgery Planning Discussion

A lung radiotherapy plan discussion among the dosimetrist, oncologist and the physicist.

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MD Physics action shot

Our team of oncologists and medical physicists are reviewing patient setup and delivery parameters as part of the SBRT/SRS treatment.

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