BC Cancer Radiation Oncologist Dr. Scott Tyldesley.

A new era for radiation therapy

Mounting evidence suggests precision radiation therapy leads to better outcomes for cancer patients

More than half of all people diagnosed with cancer need radiation therapy as part of their treatment. Over the last decade, mounting evidence has suggested that precision radiation therapy (PRT) can lead to better outcomes for patients with all types of cancer.

PRT uses specialized, highly-focused radiation techniques to cure cancer, prolong survival and increase quality of life. External beam PRT delivers radiation therapy to tumours from various positions around a person’s body, converging accurately on the tumour site.

“By delivering focused high doses of radiation over a shorter period of time, PRT limits the dose that healthy tissues surrounding the tumour receive, while increasing the dose to the tumour itself,” says BC Cancer Radiation Oncologist Dr. Scott Tyldesley.

Improving radiation therapy for children

Some 83% of Canadian children diagnosed with cancer survive and are at risk for long-term effects of radiation treatment. Because radiation therapy requires a high degree of accuracy, patients must remain perfectly still throughout treatment; this can be particularly challenging for children. Those who are especially “wiggly” undergo sedation, which comes with side effects, requires a longer procedure and the expertise of a specialized pediatric anesthesia team. Children traditionally also need more rigid immobilization and permanent tattoos which are used to mark the radiation targets on patients’ skin.

Real-time optical surface monitoring (OSM) is a precision tool that may eliminate the need for patients to be sedated, immobilization devices to keep patients still during treatment and permanent tattoos, while still maintaining accurate positioning.

While children stand to benefit the most from OSM, research suggests that OSM may be used in brain cancer patients as an alternative to more invasive procedures. “Our current goal is to support research projects into OSM that will lead to its adoption as standard of care at BC Cancer,” says Dr. Tyldesley.

Better results with fewer treatments

“Six Degrees of Freedom” Robotic Linac couches are essential for delivering precision radiation therapy and deliver complex techniques as efficiently as possible. Because the couches can move up, down, sideways and tilt in two directions, they allow for better positioning of the patient and targeting of the tumour.

For example, men with prostate cancer currently undergo 20-44 fractions of external beam radiotherapy (EBRT) over four to nine weeks, requiring patients to make many visits to BC Cancer. With support from BC Cancer Foundation donors, a clinical trial recently launched to compare EBRT with a new PRT technique that reduces the number of treatments to as few as five visits.

The results of this trial could potentially improve outcomes for a significant number of men in B.C.

As the benefitting charity of the 2019 Fairchild Miss Chinese Vancouver Pageant Gala Dinner, the Foundation is raising funds to bring a new piece of surface-guided radiation equipment to BC Cancer – Vancouver. To donate to this initiative and to learn more, please visit: https://bccancerfoundation.com/MCVP

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Comments are closed

Just Posted

Surrey Police’s role in Barnston Island still needs ‘to be looked at’

Surrey RCMP polices unincorporated island a short ferry ride across Parson’s Channel

Surrey looking into reducing residential speed limits

Surrey city council on Feb. 24 approved five ‘key pillars’ of a Surrey Transportation Plan

Fate of five-district policing model in Surrey rests with new police board

Whalley/City Centre, Guildford/Fleetwood, Newton, Cloverdale, and South Surrey districts formed under McCallum’s watch in 1998

Notorious South Surrey fugitive captured in California to face murder trial in Canada

Brandon Nathan Teixeira submitted to extradition during court proceedings Thursday in Sacramento

Better Nudes Gardens at White Rock’s Pop-Uptown Gallery

Figurative studies, floral images, vintage wareables abound in exhibit

Toddler killed in Squamish grocery store parking lot

Child’s mother taken to hospital but her condition is not known

Two law enforcement trucks ‘deliberately’ set on fire in northern B.C., RCMP say

Police say they have video evidence of a person in the area of the truck fires

B.C. mother, daughter return home after coronavirus quarantine in Asia

Jensine Morabito and her daughter were on Holland America’s Westerdam but did not catch the virus

Leap Year means we get an extra day in February, so how are you spending it?

People online have a number of suggestions and plans on how they will be spending Saturday

Greta sticker that drew outrage in Alberta not child pornography: RCMP

X-Site Energy Services has denied having anything to do with the stickers

Bald eagle hit by train in northern B.C. has a chance of survival

The raptor has been taken to OWL in the Lower Mainland for recovery

Cheslatta Carrier Nation and Rio Tinto sign a historic agreement

Co-operation crucial to stem dropping Nechako Reservoir level

Hundreds of B.C. firefighters ‘climb the wall’ for BC Lung Association

The charity fundraiser saw participants climbing up 48 storeys

Most Read

l -->