Combining target coverage and hot-spot suppression into one cost function: The hot-to-cold spot quotient
Paper i proceeding, 2021

Microwave hyperthermia treatment planning (HTP) is a multi-objective task for which several cost functions have been suggested over the years. The power distribution inside the patient, achieved by amplitude and phase steering of the applicator array, must fulfill diverse requirements. On the one hand, high and homogeneous target power deposition is required for temperature elevation. On the other, healthy tissues should not be subjected to excessive heating and hot-spots outside the target should be suppressed. To these ends, two major SAR- based indicators are currently used as cost functions in clinical HTP, albeit with slightly different meanings: the HTQ and the TC. We propose a novel cost function, termed the hot-to-cold spot quotient (HCQ), aiming at simultaneous target coverage and hot-spot suppression. We show that the HCQ yields HTP solutions that represent a good compromise between the HTQ- and TC-optimal ones for two realistic cases in both single- and multi-frequency settings.

treatment planning

cost function

microwave hyperthermia

Författare

Massimiliano Zanoli

Chalmers, Elektroteknik, Signalbehandling och medicinsk teknik, Biomedicinsk elektromagnetik

Hana Dobsicek Trefna

Chalmers, Elektroteknik, Signalbehandling och medicinsk teknik, Biomedicinsk elektromagnetik

15th European Conference on Antennas and Propagation, EuCAP 2021

9411435

15th European Conference on Antennas and Propagation, EuCAP 2021
Dusseldorf, Germany,

Ämneskategorier

Biomedicinsk laboratorievetenskap/teknologi

Signalbehandling

Annan elektroteknik och elektronik

DOI

10.23919/EuCAP51087.2021.9411435

Mer information

Senast uppdaterat

2021-06-01