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

Just Posted

Minor parties scramble to get candidates nominated for Stikine

Taylor wants to be Christian Heritage Party candidate, Repen makes bid to represent Rural BC Party

Here’s the latest on the proposed inland port development process

UPDATE: City postpones discussion slated for Sept. 28 council meet, dedicated meeting to be held soon

Cullen confirmed as B.C. NDP candidate for Stikine despite party’s equity policy

Former Tahltan Central Government President Annita McPhee said the process made her feel “abused”

B.C. reports 91 new cases as officials remain worried over ‘clusters of COVID-19

There have now been a total of 8,395 cases in B.C. since the pandemic began

Penticton woman sentenced to one year in prison for manslaughter of teen boyfriend

Kiera Bourque, 24, was sentenced for manslaughter in the 2017 death of Penticton’s Devon Blackmore

B.C. Green leader says NDP abandoning environmental plan

Horgan’s claim of unstable government false, Furstenau says

Transgender B.C. brothers debut fantasy novel as author duo Vincent Hunter

‘Transgender people are being misrepresented in popular fiction and media, and we aim to change that’

‘Won’t be gathering for Thanksgiving:’ Trudeau says COVID-19 2nd wave underway

In all, COVID-19 has killed about 9,250 people in Canada

Join Black Press Media and Do Some Good

Pay it Forward program supports local businesses in their community giving

Canada’s active COVID-19 cases top 10,000 as daily new cases triple over the past month

Dr. Tam repeated her warning to young people, who have made up the majority of recent cases

First 8 months of fatal overdoses in B.C. have now exceeded 2019 death toll

Nine people died every two days in August, BC Coroners Service data shows

Liberal effort to reset policy agenda panned by rivals as too much talk, not action

Trudeau said it’s ‘all too likely’ families won’t be able to gather for Thanksgiving next month

Most Read