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A Computational Modeling Approach to Investigate the Influence of Hyperthermia on the Tumor Microenvironment
Published on: December 1, 2023
Phenomenological model of interstitial fluid pressure in a solid tumor
L J Liu1, S L Brown, J R Ewing
1Department of Physics, University of Windsor, Windsor, Ontario, Canada N9B 3P4. liu111k@uwindsor.ca
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|September 21, 2011
Summary
This study introduces a noninvasive method to measure tumor interstitial fluid pressure (TIFP), crucial for predicting cancer treatment response. Serial imaging after contrast injection offers a quantitative TIFP assessment, overcoming limitations of current invasive techniques.
Area of Science:
- Oncology
- Medical Imaging
- Biophysics
Background:
- Tumor interstitial fluid pressure (TIFP) is a key factor in predicting tumor response to therapies like radiation.
- Current quantitative TIFP measurements are invasive and provide only limited point data.
- Developing noninvasive methods for TIFP assessment is critical for improved cancer treatment monitoring.
Purpose of the Study:
- To present a mathematical framework for a quantitative, noninvasive measure of TIFP.
- To establish a relationship between TIFP and fluid flow velocity at the tumor periphery.
- To demonstrate the potential of contrast-enhanced imaging for TIFP quantification.
Main Methods:
- Mathematical modeling of interstitial fluid pressure distribution in three tumor regions (vascularized rim, central, normal tissue).
- Establishing a correlation between TIFP and peripheral fluid flow velocity.
- Utilizing serial imaging post-contrast agent injection to assess fluid dynamics.
Main Results:
- The model describes TIFP distribution across distinct tumor microenvironments.
- A relationship was found between TIFP and tumor peripheral fluid flow.
- Serial contrast-enhanced imaging shows potential for noninvasive TIFP measurement.
Conclusions:
- A noninvasive, quantitative method for TIFP measurement is proposed.
- Fluid flow rate from tumors into surrounding tissue correlates with TIFP.
- Contrast-enhanced imaging offers a promising approach for TIFP assessment in oncology.
