Free Newsletter
Register for our Free Newsletters
Newsletter
Zones
Analysis, Inspection and Laboratory
LeftNav
Assisted/Independent Living
LeftNav
Clinical and Nursing Equipment
LeftNav
Design and Manufacture of Medical Equipment
LeftNav
Diagnostics Equipment, Monitoring and Test
LeftNav
Education, Training and Professional Services
LeftNav
Health Education and Patient Management
LeftNav
Health Estates Management
LeftNav
Healthcare Support and Information Services
LeftNav
Hygiene and Infection Control
LeftNav
IT and Communications in Healthcare
LeftNav
Materials
LeftNav
Medical Device Technology
LeftNav
Research and Development
LeftNav
Safety and Security
LeftNav
View All
Other Carouselweb publications
Carousel Web
Defense File
New Materials
Pro Health Zone
Pro Health Zone
Pro Security Zone
Web Lec
Pro Engineering Zone
 
 
News

Irish hospital uses 3D ultrasound for prostate cancer radiotherapy

Elekta : 13 March, 2012  (Application Story)
Soft tissue imaging with 3D ultrasound both at therapy simulation and just before treatment is transforming prostate radiotherapy at University Hospital Galway (UHG).
The majority of radiotherapy patients with prostate cancer who visit the clinic will benefit from a new technology that can accurately track the prostate's position before each treatment. The Elekta Clarity 3D system provides ultrasound-assisted image guidance to radiation therapy (IGRT), and avoids the additional radiation dose that comes with other IGRT techniques
 
"The big advantage of Clarity is you're not adding any radiation dose - you're getting pictures of the prostate for 'free'," said Margaret Moore, UHG's Head of Radiation Physics. "For planning treatments, CT simulation and Clarity are a great combination. Both modalities add their bit of intelligence to create the certainty that you’re seeing the target."
 
Reliably localising the prostate is critical as its position can change due to bladder and rectal filling, in addition to patient breathing, adds Moore.
 
"If you aim the treatment beams at the same spot every day, but the anatomy you want to treat is moving in and out of the spot, then it's not getting the full dose it should," Moore explained. "Clarity allows us to track the prostate’s position before each treatment, and keep the treatment beam on target."
 
UHG, which opened clinically in 2005, acquired Clarity in 2008 and began using it with one of its three linear accelerators. Clarity is capable of integrating with any external beam radiation therapy workflow and equipment to support simulation, planning and treatment.
 
"In the equipment evaluation, we liked the idea of matching the planning ultrasound to the treatment room ultrasound that Clarity offered," Moore recalled. "Other similar
IGRT options try to match ultrasound to CT, which could affect alignment accuracy. Clarity also wouldn’t require reconfiguring our linear accelerator - we could integrate the system easily."
 
Radiation oncologists at UHG have been able to use Clarity routinely to fine-tune prostate contouring, superficially at the bladder junction.
 
"In some cases, the lobes of the prostate reach up to the bladder, so distinguishing bladder tissue from prostate tissue is difficult using CT," Moore observed. "On ultrasound, there's a huge difference. The bladder is much more distinctive than the prostate gland."
 
Clarity has been also been indispensable in facilitating soft tissue imaging of prostate cancer patients with single or bilateral hip prostheses, Moore added. "The metal in artificial hips soaks up the planning CT imaging dose, which creates an artifact that blocks out the view of the prostate and prevents contouring. 
Ultrasound is unaffected by these implants. Clarity is our saviour for planning these patients."
Bookmark and Share
 
Home I Editor's Blog I News by Zone I News by Date I News by Category I Special Reports I Directory I Events I Advertise I Submit Your News I About Us I Guides
 
   © 2012 ProHealthServiceZone.com
Netgains Logo