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Vesicoureteral reflux in children: a phantom study of microwave heating and radiometric thermometry of pediatric bladder.

Publication ,  Journal Article
Birkelund, Y; Klemetsen, Ø; Jacobsen, SK; Arunachalam, K; Maccarini, P; Stauffer, PR
Published in: IEEE transactions on bio-medical engineering
November 2011

We have investigated the use of microwave heating and radiometry to safely heat urine inside a pediatric bladder. The medical application for this research is to create a safe and reliable method to detect vesicoureteral reflux, a pediatric disorder, where urine flow is reversed and flows from the bladder back up into the kidney. Using fat and muscle tissue models, we have performed both experimental and numerical simulations of a pediatric bladder model using planar dual concentric conductor microstrip antennas at 915 MHz for microwave heating. A planar elliptical antenna connected to a 500 MHz bandwidth microwave radiometer centered at 3.5 GHz was used for noninvasive temperature measurement inside tissue. Temperatures were measured in the phantom models at points during the experiment with implanted fiberoptic sensors, and 2-D distributions in cut planes at depth in the phantom with an infrared camera at the end of the experiment. Cycling between 20 s with 20 Watts power for heating, and 10 s without power to allow for undisturbed microwave radiometry measurements, the experimental results show that the target tissue temperature inside the phantom increases fast and that the radiometer provides useful measurements of spatially averaged temperature of the illuminated volume. The presented numerical and experimental results show excellent concordance, which confirms that the proposed system for microwave heating and radiometry is applicable for safe and reliable heating of pediatric bladder.

Published In

IEEE transactions on bio-medical engineering

DOI

EISSN

1558-2531

ISSN

0018-9294

Publication Date

November 2011

Volume

58

Issue

11

Start / End Page

3269 / 3278

Related Subject Headings

  • Vesico-Ureteral Reflux
  • Urinary Bladder
  • Temperature
  • Radiometry
  • Phantoms, Imaging
  • Muscles
  • Models, Biological
  • Microwaves
  • Infant
  • Hyperthermia, Induced
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Birkelund, Y., Klemetsen, Ø., Jacobsen, S. K., Arunachalam, K., Maccarini, P., & Stauffer, P. R. (2011). Vesicoureteral reflux in children: a phantom study of microwave heating and radiometric thermometry of pediatric bladder. IEEE Transactions on Bio-Medical Engineering, 58(11), 3269–3278. https://doi.org/10.1109/tbme.2011.2167148
Birkelund, Yngve, Øystein Klemetsen, Svein K. Jacobsen, Kavitha Arunachalam, Paolo Maccarini, and Paul R. Stauffer. “Vesicoureteral reflux in children: a phantom study of microwave heating and radiometric thermometry of pediatric bladder.IEEE Transactions on Bio-Medical Engineering 58, no. 11 (November 2011): 3269–78. https://doi.org/10.1109/tbme.2011.2167148.
Birkelund Y, Klemetsen Ø, Jacobsen SK, Arunachalam K, Maccarini P, Stauffer PR. Vesicoureteral reflux in children: a phantom study of microwave heating and radiometric thermometry of pediatric bladder. IEEE transactions on bio-medical engineering. 2011 Nov;58(11):3269–78.
Birkelund, Yngve, et al. “Vesicoureteral reflux in children: a phantom study of microwave heating and radiometric thermometry of pediatric bladder.IEEE Transactions on Bio-Medical Engineering, vol. 58, no. 11, Nov. 2011, pp. 3269–78. Epmc, doi:10.1109/tbme.2011.2167148.
Birkelund Y, Klemetsen Ø, Jacobsen SK, Arunachalam K, Maccarini P, Stauffer PR. Vesicoureteral reflux in children: a phantom study of microwave heating and radiometric thermometry of pediatric bladder. IEEE transactions on bio-medical engineering. 2011 Nov;58(11):3269–3278.

Published In

IEEE transactions on bio-medical engineering

DOI

EISSN

1558-2531

ISSN

0018-9294

Publication Date

November 2011

Volume

58

Issue

11

Start / End Page

3269 / 3278

Related Subject Headings

  • Vesico-Ureteral Reflux
  • Urinary Bladder
  • Temperature
  • Radiometry
  • Phantoms, Imaging
  • Muscles
  • Models, Biological
  • Microwaves
  • Infant
  • Hyperthermia, Induced