Background/introduction MR guided high-intensity focused ultrasound (HIFU) ablation is increasingly being used worldwide to treat symptomatic uterine fibroids because of its excellent therapeutic efficacy in controlling symptoms and its excellent safety record. High signal intensity on T2WI MR images of fibroids is firstly considered a factor that induces poor ablation outcomes. Nevertheless, t...

Background/introduction Ultrasound imaging provides real-time feedback for highly accurate positioning and dosing control. In addition, spatial restriction of high-intensity focused ultrasound (HIFU) transducer position in the ultrasound image-guided system is less than that in the case of MRI-guided system. Therefore, wider beam approaching path can be used in the ultrasound image-guided syste...

Recent decades have seen a paradigm shift in the treatment of liver tumours from invasive surgical procedures to minimally invasive image-guided ablation techniques. Magnetic resonance-guided high-intensity focused ultrasound (MR-HIFU) is a novel, completely non-invasive ablation technique that has the potential to change the field of liver tumour ablation. The image guidance, using MR imaging ...

High intensity focused ultrasound (HIFU) guided by magnetic resonance imaging (MRI) is a noninvasive treatment that potentially reduces patient morbidity, lowers costs, and increases treatment accessibility. Traditionally, piezoelectric transducers are used for HIFU, but capacitive micromachined ultrasonic transducers (CMUTs) have many advantages, including fabrication flexibility, low loss, an...

Radical prostatectomy remains the standard treatment for patients with localized prostate cancer and a life expectancy exceeding 10 years (1). For patients with a life expectancy of less than 10 years who are not fit for surgery or do not want to experience the potential side effects of surgery, several alternative treatments have been introduced, such as, three-dimensional radiotherapy, brachy...

High Intensity Focused Ultrasound (HIFU) has been emerging as a new and effective modality in non-invasive thermal ablation for cancers and solid tumours. Although a theoretical model is available for calculating thermal field and the consequent lesion production, its computation is too time-consuming (~ 1 day) for HIFU treatment planning on the site. In this study, several approximations were ...

BACKGROUND Magnetic resonance high-intensity focused ultrasound (MR-HIFU) treatment for uterine fibroids is rapidly gaining popularity as a treatment modality. This procedure is generally uncomfortable, painful, and requires minimal or absence of movement and an MR-HIFU synchronised breathing pattern of the patient. Procedural sedation and analgesia protocols have become the standard practice i...

Introduction High-intensity focused ultrasound (HIFU) is an innovative noninvasive procedure for local ablation of different benign and malignant tumors. Preliminary data animal studies suggest ablation-associated immune response after HIFU that induced by cell necrosis release intracellular components. The aim this study to evaluate if a HIFU-induced early sterile inflammatory reaction initiat...

Introduction Magnetic resonance imaging guided high-intensity focused ultrasound (MR-HIFU) is a non-invasive technique with low risk of complications for the patient and few side effects. Integration MRI allows monitoring temperature regime thermal doses, which protects important structures from overheating, at same time directing high dose to target tissue. MR-HIFU in treatment uterine fibroid...

Introduction: High Intensity Focused Ultrasound (HIFU) is a technique currently used for different medical treatments such as thermal ablation, hyperthermia, and bleeding control [1]. This kind of technique is based on the use of an acoustic transducer with a concave face used to focus the ultrasound energy in a specific zone (Figure 1). The acoustic field characterization in transducers is imp...