Our solution

Deep Inspiration Breath Hold (DIBH) is a technique commonly employed across radiation oncology clinics worldwide. When you take a deep breath, your breast area moves further away from your heart. For a patient, this can help it to move away from the radiation beam during treatment.


What does AlignRT do?

AlignRT helps therapists make sure the patient’s heart is in the right place. Using three camera units to monitor thousands of points on the skin, AlignRT can detect any motion as the patient holds their breath, with sub-millimeter accuracy. If the patient moves out of position, the radiation beam is turned off.

During a recent study at the University of North Carolina, patients were treated using AlignRT for DIBH. Of these, 0% exhibited radiation-induced abnormalities in blood flow to the heart six months after treatment.*

Other benefits:

  • Optical – AlignRT uses video-based technology to see the skin surface and does not emit any ionizing radiation
  • Non-invasive – AlignRT does not mark or touch the patient throughout treatment


Advanced technology used by advanced institutions.

AlignRT — by Vision RT — is the premier Surface Guided Radiation Therapy (SGRT) treatment tool. In fact, Vision RT systems are now in 37 of the top 50 cancer centers in the United States (according to U.S. News & Health).

The use of AlignRT for DIBH in treating left breast cancer patients has been extensively researched, with ten journal papers published to date.**


A patient’s words …

“I feel very lucky to have had access to technology like this during my treatment. If I’d have known the benefits before, I would have felt even more empowered and reassured before radiation therapy.”

– Alison Young – click here to read her full experience of AlignRT


*Zagar et al. Prospective Assessment of Deep Inspiration Breath Hold to Prevent Radiation Associated Cardiac Perfusion Defects in Patients With Left-Sided Breast Cancer J Appl Clin Med Phys. ;93:3S 2027, plus recent personal communication.
**Journal publications:
• Cerviño et al. Using surface imaging and visual coaching to improve the reproducibility and stability of deep-inspiration breath hold for left-breast-cancer radiotherapy. Phys Med Biol. 2009 Nov 21;54(22):6853-65.:
• Chang et al. Video surface image guidance for external beam partial breast irradiation. Pract Radiat Oncol. 2012 Apr-Jun;2(2):97-105.:
• Gierga et al. A Voluntary Breath-Hold Treatment Technique for the Left Breast With Unfavorable Cardiac Anatomy Using Surface Imaging. Int J Radiat Oncol Biol Phys. 2012 Dec 1;84(5):e663-8:
• Padilla et al. Assessment of interfractional variation of the breast surface following conventional patient positioning for whole-breast radiotherapy. J Appl Clin Med Phys. 2014 Sep 8;15(5):4921:
• Rochet et al. Deep inspiration breath-hold technique in left sided breast cancer radiation therapy: Evaluating cardiac contact distance as a predictor of cardiac exposure for patient selection. Practical Radiation Oncology (2015) 5, e127-e134:
• Rong et al. Improving intra-fractional target position accuracy using a 3D surface surrogate for left breast irradiation using the respiratory-gated deep-inspiration breath-hold technique. PLoS One. 2014 May 22;9(5):e97933
• Shah et al. Clinical evaluation of interfractional variations for whole breast radiotherapy using 3-dimensional surface imaging. Pract Radiat Oncol. 2013 Jan-Mar;3(1):16-25.:
• Tang et al. Clinical experience with 3-dimensional surface matching-based deep inspiration breath hold for left-sided breast cancer radiation therapy. Pract Radiat Oncol. 2014 May-Jun;4(3):e151-8.:
• Tang et al. Dosimetric effect due to the motion during deep inspiration breath hold for left-sided breast cancer radiotherapy. J Appl Clin Med Phys. 2015 Jul 8;16(4):5358.:
• Tanguturi et al. Prospective assessment of deep inspiration breath-hold using 3-dimensional surface tracking for irradiation of left-sided breast cancer. Pract Radiat Oncol. 2015 Nov-Dec;5(6):358-65.:
¹Marks, L. B. et al. The incidence and functional consequences of RT-associated cardiac perfusion defects. Int. J. Radiat. Oncol. Biol.
²Zagar et al. Prospective Assessment of Deep Inspiration Breath Hold to Prevent Radiation Associated Cardiac Perfusion Defects in Patients With Left-Sided Breast Cancer J Appl Clin Med Phys. ;93:3S 2027, plus recent personal communication.