Breast 3D-CRT / IMRT with TomoDirect

Efficiency and precision—when fewer beam angles are needed

The TomoDirect modality offers a highly efficient IMRT treatment option for routine indications, available for the Radixact® and TomoTherapy® Systems.

Patient in need of breast 3D-CRT with the TomoDirect modality of the Radixact System from Accuray

Radixact® expands the curative power of radiation therapy like no other system in the world

Image guided, intensity modulated radiation therapy (IG-IMRT), featuring best-in-class clinical workflows and highly conformal and homogenous treatments enabled by a unique ultra-fast multi-leaf collimator (MLC). 

Conformal, homogenous coverage

TomoDirect provides non-rotational delivery of beamlets from fixed gantry angles, enabling highly efficient and precise 3D conformal radiation therapy (3D-CRT) and intensity-modulated radiotherapy (IMRT) capabilities. Continuous couch motion enhances treatment delivery over the longest treatment fields in the industry. The advantages of TomoDirect for breast treatments over competitive modalities have been shown in published planning comparisons.1-3
Combined with TomoEDGE dynamic jaws, TomoDirect provides efficient treatments and highly conformal dose distribution in both whole breast and whole breast with supraclavicular regional lymph nodes4.

Streamlined workflows

Outstanding precision & dose fall-off

An ideal clinical solution for routine and complex breast cancer treatments

The Radixact and TomoTherapy systems offer TomoDirect delivery, providing efficient treatments for a spectrum of cancer cases from a single platform.

Tailoring Radiotherapy to Breast Cancer:

The Role of the TomoTherapy® System

Professor Roberto Orecchia
Scientific Director of the European, Institute of Oncology, Milan, Italy

TomoEDGE Dynamic Jaws

Total scheduled procedure time averages 10-15 minutes* with TomoEDGE dynamic jaws

*Includes set-up, full 3D imaging and average beam-on time of 4.5 minutes. Total procedure times are approximate and based on internal Accuray test data. Times may vary with various clinical situations.

Accuray Radixact
Accuray Fixed Jaws
Accuray Dynamic Jaws

“For postoperative breast irradiation with static TomoTherapy, the dynamic jaw mode was effective in reducing the treatment time and the doses of OARs in both of the plans of the whole breast with supraclavicular regional lymph nodes and those of the whole breast.”

Efficacy of the Dynamic Jaw Mode in Helical Tomotherapy With Static Ports for Breast Cancer. TCRT. 2014; 14: 459-465. Sugie C. et al.

Clinical Examples

Radixact & TomoTherapy for Breast

Explore the Radixact and TomoTherapy systems.

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See additional plan examples and get the answers you need.

1. Han E.Y. et al. “Estimation of the risk of secondary malignancy arising from whole-breast irradiation: comparison of five radiotherapy modalities, including TomoHDA” Oncotarget. 2016; 7(16): 22960-9 –

2. Nagai A. et al. “Intensity-modulated radiotherapy using two static ports of TomoTherapy for breast cancer after conservative surgery: dosimetric comparison with other treatment methods and 3-year clinical results. Journal of Radiation Research.  2017; Feb 23: 1-8 –

3. Michalski A. et al. “A dosimetric comparison of 3D-CRT, IMRT, and static TomoTherapy with an SIB for large and small breast volumes.” Medical Dosimetry. 2014; 39: 163-168

4. Sugie C. et al. “Efficacy of the Dynamic Jaw Mode in Helical Tomotherapy With Static Ports for Breast Cancer.“TCRT. 2014; 14: 459-465 –