Rush University Medical Center studies advanced 3D imaging system for radiation therapy

April 28, 2005

CHICAGO - An advanced 3D display system initially developed with automobile design in mind may be beneficial in the treatment of cancer patients. Rush University Medical Center in Chicago is the only test site in the world exploring the use of the Perspecta Spatial 3D system to improve evaluation and planning of radiation treatments. This unique system, developed by Actuality Systems, Inc., consists of a 20-inch dome that plugs easily into a PC to display full-color and full-motion MRI, x-ray, CT, and nuclear medicine images in true 3D space.

"We believe Perspecta could have a significant impact on a physician's ability to review a treatment plan for radiotherapy," said Dr. James Chu, professor and director of medical physics for the department of radiation oncology. "Compared to a standard two dimensional display, the true 3D image enables physicians to work more precisely and efficiently."

The effectiveness of radiation therapy depends on the medical team's ability to concentrate high radiation doses to the tumors while minimizing the doses to surrounding critical organs. Currently, oncologists have to look at hundreds of digital imaging slices, one at a time, to determine where the dose is hitting.

With the Perspecta, the radiation dose distribution can be superimposed over the 3D patient image. The images can be viewed and manipulated from any vantage point around the 360-degree dome, by any number of users.

While demonstrating the new technology, Dr. Chu pointed to an example of a tumor highlighted in green and the radiation dose highlighted in orange. When looking at the image from the front it appeared the radiation was fully covering the tumor, but as the viewer walks around the dome, it is apparent the back of the tumor is sticking out beyond the orange field.

"This shows us immediately that we aren't giving adequate coverage and helps us focus in very quickly on the region where we must do more planning," said Chu. "In addition, we can see if the dose is hitting normal tissue or critical structures."

Currently, the technology is being studied to determine if it is useful for evaluation of the radiation dose distribution, but the tools are not yet available to use the equipment for treatment planning.

In the future, Dr. Chu would like to be able view changes in the radiation dose in real time. He believes combining this technology with his research into the use of strong magnetic fields may improve the radiation dose distribution.

"If we can figure out how to deliver radiation energy concentrated only on the tumor and very little radiation on normal tissue, than all tumors potentially can be destroyed," said Dr. Chu. "We are hopeful, a 3D display system can assist us in reaching that goal."

The Perspecta Spatial 3D System has not received FDA approval and is not intended for use in clinical diagnosis, nor may it be used to prevent, diagnose, or treat disease. In the medical fields, Perspecta is offered to qualified research institutions only.
-end-
About Actuality Systems
Founded in 1997, Actuality Systems, Inc. develops the world's first Spatial 3D display systems, which have been proven to provide faster and more accurate outcomes in medical, homeland security, and oil and gas exploration applications. Perspecta Spatial 3D has won Product of the Year awards from respected trade and industry publications. With offices near Boston, Acutality Systems is backed by world-class venture firms and individuals.

Rush University Medical Center includes the 729-bed Presbyterian-St. Luke's Hospital; 79-bed Johnston R. Bowman Health Center; Rush University (Rush Medical College, College of Nursing, College of Health Sciences and the Graduate College).

Rush University Medical Center

Related Radiation Articles from Brightsurf:

Sheer protection from electromagnetic radiation
A printable ink that is both conductive and transparent can also block radio waves.

What membrane can do in dealing with radiation
USTC recently found that polymethylmethacrylate (PMMA) and polyvinyl chloride (PVC) can release acidic substance under γ radiation, whose amount is proportional to the radiation intensity.

First measurements of radiation levels on the moon
In the current issue (25 September) of the prestigious journal Science Advances, Chinese and German scientists report for the first time on time-resolved measurements of the radiation on the moon.

New biomaterial could shield against harmful radiation
Northwestern University researchers have synthesized a new form of melanin enriched with selenium.

A new way to monitor cancer radiation therapy doses
More than half of all cancer patients undergo radiation therapy and the dose is critical.

Nimotuzumab-cisplatin-radiation versus cisplatin-radiation in HPV negative oropharyngeal cancer
Oncotarget Volume 11, Issue 4: In this study, locally advanced head and neck cancer patients undergoing definitive chemoradiation were randomly allocated to weekly cisplatin - radiation {CRT arm} or nimotuzumab -weekly cisplatin -radiation {NCRT arm}.

Breaking up amino acids with radiation
A new experimental and theoretical study published in EPJ D has shown how the ions formed when electrons collide with one amino acid, glutamine, differ according to the energy of the colliding electrons.

Radiation breaks connections in the brain
One of the potentially life-altering side effects that patients experience after cranial radiotherapy for brain cancer is cognitive impairment.

Fragmenting ions and radiation sensitizers
The anti-cancer drug 5-fluorouracil (5FU) acts as a radiosensitizer: it is rapidly taken up into the DNA of cancer cells, making the cells more sensitive to radiotherapy.

'Seeing the light' behind radiation therapy
Delivering just the right dose of radiation for cancer patients is a delicate balance in their treatment regime.

Read More: Radiation News and Radiation Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.