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

Comments are closed

Just Posted

Police seek victims of alleged Prince George pedophile

Kevin James Belcourt has been charged with several sex crimes involving a girl under 16

Telkwa lifts boil water advisory

The Village of Telkwa has just announced that as of 3:00 p.m.… Continue reading

Chevron’s move to exit Kitimat LNG project a dash of ‘cold water’ for gas industry

Canada Energy Regulator approved a 40-year licence to export natural gas for Kitimat LNG

New report into sawmill explosions released

The report recommends streamlining investigative process

No parole for 12 years for Burns Lake man convicted of second degree murder

Judge said he did not believe Albert Giesbrecht’s claim his gun discharged accidentally

VIDEO: Success of wildlife corridors in Banff National Park has advocates wanting more

Demand for more highway protection escalated after seven elk were killed by a semi-trailer near Canmore

Sharks beat Canucks 4-2 to snap 6-game skid

Vancouver visits Vegas on Sunday

Fans sing Canadian anthem after sound system breaks at BMW IBSF World Cup

The Canadians in attendance made sure their team and flag were honoured on the podium

VIDEO: Fire destroys Big White Ski Resort chalet

Social media eulogies peg the property, nicknamed “The Pharamacy,” as both loved and hated

Prince George RCMP use bait packages to catch porch pirates over the holidays

First-in-Canada program with Amazon looks to combat parcel theft

Nanaimo mechanical engineer creates thief tracking program

Nanaimo Thief Tracking lets users plot and share information about thefts online

Mayor wants B.C. to institutionalize severely mental ill people who are homeless

Those suffering from mental health conditions, such as schizophrenia, need specialized care, mayor says

Five things of note from Trudeau’s mandate letters to his ministers

Some marching orders come from the Liberal Party’s campaign, while others are new additions

Most Read