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Curing more cervical cancer cases may be in the math
Date:1/29/2010

COLUMBUS, Ohio Cervical cancer is highly curable when caught early. But in a third of cases, the tumor responds poorly to therapy or recurs later, when cure is much less likely.

Quicker identification of non-responding tumors may be possible using a new mathematical model developed by researchers at the Ohio State University Comprehensive Cancer Center-Arthur G. James Cancer Hospital and Richard J. Solove Research Institute.

The model uses information from magnetic resonance imaging (MRI) scans taken before and during therapy to monitor changes in tumor size. That information is plugged into the model to predict whether a particular case is responding well to treatment. If not, the patient can be changed to a more aggressive or experimental therapy midway through treatment, something not possible now.

The study, published in the journal Cancer Research, uses MRI scans and outcome information from 80 cervical cancer patients receiving a standard course of radiation therapy designed to cure their cancer.

"The model enables us to better interpret clinical data and predict treatment outcomes for individual patients," says principal investigator Jian Z. Wang, assistant professor of radiation medicine and a radiation physicist at the James Cancer Hospital and Solove Research Institute.

"The outcome predictions presented in this paper were solely based on changes in tumor volume as derived from MRI scans, which can be easily accessed even in community hospitals," Wang says. "The model is very robust and can provide a prediction accuracy of 90 percent for local tumor control and recurrence."

A strength of the new model, says first author Zhibin Huang, is its use of MRI data to estimate three factors that play key roles in tumor shrinkage and that vary from patient to patient the proportion of tumor cells that survive radiation exposure, the speed at which the body removes dead cells from the tumor, and the growth rate of surviving tu
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Contact: Darrell E. Ward
darrell.ward@osumc.edu
614-293-3737
Ohio State University Medical Center
Source:Eurekalert

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