[ RadSafe ] Skin Injuries To Patients Can Be Avoided When Radiation Dose Is Monitored (also ESTRO presentation on real-time radiotherapy system)

Sandy Perle sandyfl at cox.net
Thu Nov 22 12:26:38 CST 2007

I am not sure that this is earth shattering, but I am posting this as a
follow-up to the previous postig regarding new detector for radiotherapy.
Today there esiats capabilities to measure skin entrance dose without
adversely affecting the eximation, and, there is capability for meadsuring
real-time dose during interventional radiology, IMRT, etc. See the PDF file
presented at the recent ESTRO Meeting in Barcelona titled "A scintillating
copper-doped quartz dosimeter - a new detector" for radiotherapy



Skin Injuries To Patients Can Be Avoided When Radiation Dose Is Monitored

Main Category: Radiology
<http://www.medicalnewstoday.com/sections/radiology/>  / Nuclear Medicine
Article Date: 21 Nov 2007 

Maximum radiation skin dose during coronary angioplasty can be accurately
determined by monitoring the total entrance skin radiation dose as the
patient is being examined and dividing that number in half according to a
recent study conducted by researchers at Tohoku University in Sendai, Japan.
By knowing the maximum radiation skin dose, radiologists can avoid skin
injury to the patient, the researchers said.

Angioplasty, is a procedure that helps treat narrowed coronary arteries.
"Many patients benefit greatly from procedures such as angioplasty, however,
a major disadvantage associated with these procedures is patient radiation
exposure," said Koichi Chida, PhD, lead author of the study. "In most
cardiac interventional procedures, real-time monitoring of maximum skin dose
is not possible," however monitoring total entrance skin radiation dose is,
Dr. Chida said. The study was conducted to determine if total entrance skin
dose could help determine maximum radiation dose to the skin.

The study evaluated 194 angioplasty procedures. The researchers investigated
the relation between maximum skin dose and total entrance skin dose and
found that the maximum skin dose constituted between 48%-52% of the total
entrance skin dose during angioplasty. There were significant correlations
between maximum skin dose and total entrance skin dose during angioplasty,
Dr. Chida said.

"This study is an important addition to interventionalists' knowledge and
understanding about how to evaluate radiation exposure to their patients,"
he said.

The full results of this study appear in a recent issue of the American
Journal of Roentgenology, published by the American Roentgen Ray Society.


Abstract:  http://www.ajronline.org/cgi/content/abstract/189/4/W224


Sander C. Perle 
Global Dosimetry Solutions, Inc. 
2652 McGaw Avenue
Irvine, CA 92614


Tel: (949) 296-2306 / (888) 437-1714 ext 2306

Fax:(949) 296-1144


Global Dosimetry Website: http://www.dosimetry.com

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