Application of Zernike polynomials towards accelerated adaptive focusing of transcranial high intensity focused ultrasound

Application of Zernike polynomials towards accelerated adaptive focusing of transcranial high intensity focused ultrasound.

PURPOSE To study the phase aberrations produced by human skulls during transcranial magnetic resonance imaging guided focused ultrasound surgery (MRgFUS), to demonstrate the potential of Zernike polynomials (ZPs) to accelerate the adaptive focusing process, and to investigate the benefits of using phase corrections obtained in previous studies to provide the initial guess for correction of a ne...

High-Intensity Focused Ultrasound –

Clinical Application of High-intensity Focused Ultrasound in Cancer Therapy

The treatment of cancer is an important issue in both developing and developed countries. Clinical use of ultrasound in cancer is not only for the diagnosis but also for the treatment. Focused ultrasound surgery (FUS) is a noninvasive technique. By using the combination of high-intensity focused ultrasound (HIFU) and imaging method, FUS has the potential to ablate tumor lesions precisely. The m...

High intensity focused ultrasound (HIFU).

INTRODUCTION Curative treatments for localized prostate cancer, from least invasive to most invasive, include brachytherapy, cryosurgery, three-dimensional conformal radiation therapy, external beam radiation therapy, and radical prostatectomy. A patient with localized, low risk or intermediate risk prostate cancer who is diagnosed at an early age and receives one of these treatments has only a...

Adaptive Volumetric MR-guided High-Intensity Focused Ultrasound Ablations

Introduction Recent technological advances in the field of clinical high intensity focused ultrasound (HIFU) transducer systems and real time MR thermometry using PRF thermometry [1] lead to an increasing trend towards real time feedback control for the MR-guidance of thermal therapies with HIFU. In particular phased array HIFU systems with short beam repositioning times and large aperture/foca...