PMID: 11324948Apr 28, 2001Paper

Quasistatic zooming for regional hyperthermia treatment planning

Physics in Medicine and Biology
J B Van de KamerJ J W Lagendijk

Abstract

Due to current computer limitations, specific absorption rate (SAR) distributions in regional hyperthermia treatment planning (HTP) are limited to centimetre resolution. However, since patient anatomy is highly structured on a millimetre scale, millimetre-resolution SAR modelling is required. A method called quasistatic zooming has been developed to obtain a high-resolution SAR distribution within a volume of interest (VOI): using the low-resolution E-field distribution and the high-resolution patient anatomy, the high-resolution SAR distribution is computed within a small zoom volume Q (small compared with the wavelength in water (lambda(w))). Repeating this procedure yields the zoomed-resolution SAR distribution in an arbitrary VOI. To validate this method for a VOI that is not small compared with lambda(w), high-resolution finite-difference time-domain (FDTD) modelling is needed. Since this is impractical for a clinical applicator, a computer model of a small applicator has been created. A partial patient anatomy is inserted into the applicator and both high- and low-resolution SAR distributions are computed for this geometry. For the same geometry, zoomed-resolution SAR distributions are computed with different sizes of Q. ...Continue Reading

References

Sep 1, 1987·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·A A De Leeuw, J J Lagendijk
Jan 1, 1984·IEEE Transactions on Bio-medical Engineering·W T Joines
Sep 1, 1993·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·D M SullivanD S Kapp
Oct 1, 1996·IEEE Transactions on Bio-medical Engineering·J de BreeJ J Lagendijk
Jun 12, 1999·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·K D PaulsenW E Boyse
Dec 22, 1999·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·P WustR Felix
Feb 24, 2001·Physics in Medicine and Biology·J B Van de KamerH Kroeze
Mar 17, 2001·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·J B Van de KamerJ J Lagendijk
May 12, 2001·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·J B Van de KamerJ J Lagendijk

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Citations

Nov 9, 2006·Medical Physics·J GellermannP Wust
Nov 20, 2012·Strahlentherapie und Onkologie : Organ der Deutschen Röntgengesellschaft ... [et al]·R A M CantersG C van Rhoon
Oct 19, 2007·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·Kung-Shan ChengShiva K Das
Apr 21, 2012·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·Vasant A SalgaonkarChris J Diederich
Jun 24, 2005·Physics in Medicine and Biology·H P KokJ Crezee
May 25, 2007·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·P M A van HaarenJ Crezee
Jul 28, 2001·Physics in Medicine and Biology·H KroezeJ J Lagendijk
Jun 1, 2001·Physics in Medicine and Biology·J B Van de KamerJ J Lagendijk
Aug 8, 2006·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·H P KokJ Crezee
Dec 22, 2004·Physics in Medicine and Biology·Cornelis A T Van den BergJeroen B Van de Kamer

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