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

Fur Brigade Trail was transportation route in Okanagan Valley

Transportation corridor passed through Nicola Prairie, now Summerland

No hesitation; two bystanders assist in Penticton house fire rescue

“I’d do it for anybody,” says Penticton man after assisting in house fire rescue

RCMP, firefighters rally in support for health care workers in Kelowna

Pandosy Street was packed with supporters Saturday night

Two people sent to hospital after Penticton Fire Department extinguish house fire

The fire was reported just after 6:30 p.m. Saturday evening on Duncan Avenue

Social media a blessing and a curse during time of crisis: B.C. communication expert

‘In moments of crisis, fear is very real and palpable,’ says SFU’s Peter Chow-White

No plans to call in military right now to enforce COVID-19 quarantine: Trudeau

Trudeau unveils $7.5M for Kids Help Phone, $9M for vulnerable seniors amid COVID-19

Okanagan women spending quarantine making masks

Group at Predator Ridge, and a colleague in Vernon, keeping busy making surgical masks for others

QUIZ: How much do you know about the Olympics?

Put your knowledge to the test with these 12 questions

B.C. announces $3M for food banks to increase capacity during COVID-19

It is not clear how much of the money will flow towards Greater Victoria food banks

B.C. is seeing the highest rate of COVID-19 recovery in Canada, and there’s a few reasons why

British Columbia was one of the first to see rise in COVID-19 cases, and has also switched up testing

World COVID-19 update: U.S. expects 100,000 deaths; Oregon declares disaster

Comprehensive update of world news for Sunday, March 19.

Second million-dollar lotto ticket sold in Okanagan

Twice, in less than a month, somebody won Guaranteed Match Number prize with ticket bought in Vernon

Summerland churches go online during COVID-19 pandemic

Livestream services, online support provided to congregations and community

WATCH: Okanagan producer treats neighbours to live music from safe distance

Neighbours practiced social distancing as Jeff Johnson played songs from his front steps

Most Read