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Prostate radiotherapy

Pathways to improve outcomes


Cutting-edge prostate pathway

Our dedicated prostate service is a comprehensive multidisciplinary and multimodality pathway that draws on best practice from many of the world’s leading cancer centres. Under the clinical governance of a team of expert uro-oncologists and surgeons it represents a whole-systems approach including:


Fast and accurate planning – within 48 hours

Our bespoke planning system uses automation and artificial intelligence (AI). This enables us to start treatments in as little as 48 hours of planning scan, including for palliative patients, and optimises the potential for hypofractionation – a shorter course of higher dose treatments.



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Contact our referrals and enquiries team to refer a patient for any of our services.

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Prostate radiotherapy

Advanced radiotherapy in prostate cancer – improving quality of life

In the treatment of the most common cancer in men, recent advances in radiotherapy present new opportunities to improve  outcomes and quality of life for patients. GenesisCare is at the forefront of innovation in radiotherapy and offer advanced techniques as part of a comprehensive prostate cancer pathway of care. These include the latest-generation linear accelerators at each of our centres and the UK’s first MRIdian, which is an MR-guided system for stereotactic ablative radiotherapy (SABR) at our centres in Oxford and Cromwell Hospital in London.

These radiotherapy systems use advancements in precision targeting to enable hypofractionated treatment plans – an effective dose delivered in fewer fractions and with less chance of toxicity to healthy tissue and resulting side effects. Combined with innovative approaches such as organ-sparing rectal spacers, radiotherapy is transforming opportunities to manage local and locally advanced disease as either an adjuvant or alternative to surgery.

Radical external beam radiotherapy is a preferred treatment option for localised prostate cancer, particularly for intermediate-risk and high‑risk disease.1 Numerous controlled studies have shown the benefits of dose-escalation and high-dose conformal radiotherapy with 1.8–2Gy daily fractions to a total dose of 74-79.2Gy over seven to eight weeks. This has become the standard schedule in the UK and led to the development of advanced techniques such as surface-guided radiotherapy (SGRT) and the use of rectal spacers, to sculpt dose distribution to reduce gastrointestinal (GI) toxicity.


More recently there has been a move to hypofractionated radiotherapy, driven by an understanding of the radiobiology of prostate cancer and the relative sensitivity of tumours and healthy tissue in response to dose per fraction and total dose. The linear-quadratic model, uses a ratio – the alpha/beta ratio (α/β) – to represent the cell survival of these different tissues in response to fraction size. The ratio is inversely related to changes in fraction size, therefore a low ratio indicates a greater sensitivity to increasing fraction size. For most tumours and acute healthy tissue responses the ratio is over 8.

However, for prostate cancer the ratio may be as low as 1.5, suggesting that a smaller number of high-dose fractions could improve the therapeutic ratio. This has led to an interest in hypofractionated approaches to prostate treatment.


Advanced techniques such as intensity-modulated radiotherapy (IMRT) and, more recently, volumetric arc radiotherapy (VMAT) offer highly conformal dose distribution, allowing high-dose without increasing toxicity to healthy tissue. These have enabled the success of moderate hypofractionated treatment plans, as an adjuvant or alternative to surgery.

VMAT has replaced conventional intensity-modulated radiotherapy to become the mainstay of curative radiotherapy in prostate cancer. The accuracy of VMAT is further enhanced when combined with SGRT – a sophisticated stereovision technology that monitors thousands of points on the patient’s skin during set-up and treatment, unlike other commonly used systems that rely on CT imaging – further increasing radiation exposure. This powerful system reduces positioning errors to improve the overall accuracy, as well as the speed and comfort of treatment.

We have developed evidence-based protocols for these treatment approaches and offer them as standard to all eligible patients.

Care plans are designed by a multidisciplinary team to facilitate peer review and clinical excellence GenesisCare


1. Prostate cancer: diagnosis and management, NICE guideline. National Institute for Health and Care Excellence (NICE); 2019.

Rectal spacers to reduce toxicity

Rectal spacers reduce the long-term bowel, urinary and sexual function side effects of radiotherapy, and improve quality of life. Rectal spacers are a game changer in reducing the effect of toxicity to healthy tissues such as the bowel.

A rectal spacer is inserted between the rectum and the prostate to temporarily move the anterior rectal wall further away from the prostate. The spacer lasts for the entire course of prostate radiotherapy treatment and is completely absorbed by the patient’s body over time. Studies have shown that using rectal spacers in men undergoing radiotherapy for prostate cancer is safe and effective in creating perirectal space, reducing rectal irradiation and resulting in fewer patient-reported declines in bowel, urinary and sexual function, and improves quality of life (QOL).

At GenesisCare we offer rectal spacers at no extra cost to all patients with a prostate in situ prior to VMAT or SABR radiotherapy. We offer insertions under local anaesthetic at our Cambridge, Maidstone, Milton Keynes, Oxford and Windsor centres, or performed as a day-case procedure under general anaesthetic at one of our partner hospitals.

5# SABR for prostate cancer

5# SABR for prostate cancer

Growing evidence has supported the use of extreme hypofractionation for patients with low to intermediate risk and selected high-risk localised prostate cancer.

Our 5# SABR for prostate cancer service is available at our centres in Chelmsford, Cambridge, Bristol, Birmingham, Nottingham, Maidstone and Elstree.

We always want to deliver an exceptional service that improves outcomes for our patients. Being able to offer this innovative treatment to our patients means that they benefit from:

  • A suitable alternative to surgery
  • No increase in gastrointestinal/genitourinary side effects compared to 20#
  • A reduction in treatment time and less interruption to their daily life
  • Additional benefit from rectal spacers to help reduce damage to surrounding healthy tissues such as the bowel, offered at no extra cost

MRIdian MR-guided radiotherapy

The UK’s first MRIdian MR Linacs

There is now a growing body of evidence in support of extreme hypofractionation – typically a delivery of 6-10Gy per fraction daily or weekly up to 35 or 50Gy. This is achieved using SABR, which uses targeted high-dose radiation beams. A recent advance in SABR delivery is MRIdian which combines a linear accelerator with a high definition MR scanner. It allows real-time adaptive planning and treatment, with organ motion monitoring and automatic gating that prevents beam delivery when the target is outside the treatment boundaries. This innovative SABR technique promises increased confidence that the target is hit every time with minimum damage to surrounding healthy tissues and initial studies show a low incidence of GI and GU toxicity in localised prostate cancer1.

We have introduced the first MRIdian MRI-guided radiotherapy (MRgRT) systems to the UK at our centres in Oxford and London and offer this modality as a specialist service within our SABR network. We have partnered with the University of Oxford to build a UK body of evidence around its use. This is the foundation for an emerging MRIgRT network that will put us at the forefront of exploring the possibilities of this innovative approach.


  1. Bruynzeel A, Tetar S, Oei S, Senan S, Haasbeek C, Spoelstra F et al. A Prospective Single-Arm Phase 2 Study of Stereotactic Magnetic Resonance Guided Adaptive Radiation Therapy for Prostate Cancer: Early Toxicity Results. International Journal of Radiation Oncology*Biology*Physics. 2019;105(5):1086-1094.

Safety and clinical excellence

Patient safety is at the heart of what we do

We are committed to an environment of clinical excellence, objectivity and accountability. Our prostate service is led by our Urology Reference Group – an advisory team of leading NHS clinicians who have been recruited due to their clinical expertise and experience in the techniques offered in the GenesisCare pathway. The role of the Urology Reference Group is to provide the necessary clinical oversight for a safe and effective uro-oncology service across the GenesisCare network from rapid access diagnostic clinics, through to advanced radiotherapy treatments and Theranostics.

This includes improved access to treatment, introducing new clinicians to the network, overseeing training and competency frameworks and contributing to the evidence base. They also implement a quality framework and measurement for VMAT radiotherapy and spacers. In addition, they drive the implementation of existing and emerging radiation technologies, in particular the MRIdian for treatment of prostate cancer, as well as academic collaboration with the University of Oxford.


We are CQC inspected and have a comprehensive governance framework that ensures safe treatment protocols, evaluates  consultant practising privileges and reviews cases outside standard treatment protocols.

Patient app for PROMs collection

As an ongoing commitment to our patients and to monitor the long-term effects of treatment, we have developed a bespoke  app for the collection of patient-reported outcome measures (PROMs). Supported by our centre teams, patients are encouraged to download the app to enable them to record their responses at designated intervals from the start of  treatment.

Refer a patient


0808 156 9565
Contact our referrals and enquiries team to refer a patient for any of our services.

Thank you


Partner with us

We are always looking to collaborate with talented consultants. We can help you build your private practice with medical secretary support, practice management systems, website and marketing support and free consultation rooms. We welcome requests from individuals and academic institutions to access our state-of-the-art equipment and clinical support for treatment and research. You can also build your knowledge and network with peers at our many CPD events, with over 300 education and engagement events per year.

For more information, please contact: