Real-time automatic temperature regulation during in vivo MRI-guided laser-induced thermotherapy (MR-LITT).

ABSTRACT: Precise control of tissue temperature during Laser-Induced Thermotherapy (LITT) procedures has the potential to improve the clinical efficiency and safety of such minimally invasive therapies. We present a method to automatically regulate in vivo the temperature increase during LITT using real-time rapid volumetric Magnetic Resonance thermometry (8 slices acquired every second, with an in-plane resolution of 1.4 mmx1.4 mm and a slice thickness of 3 mm) using the proton-resonance frequency (PRF) shift technique. The laser output power is adjusted every second using a feedback control algorithm (proportional-integral-derivative controller) to force maximal tissue temperature in the targeted region to follow a predefined temperature-time profile. The root-mean-square of the difference between

SUBMITTER: Desclides M 

PROVIDER: S-EPMC9968334 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature