Design of focused ultrasound phased arrays for prostate treatment

Tan, J.S.; Frizzell, Leon A.; Sanghvi, N. T.; Seip, R.; Wu, J.S.; Kouzmanoff, J.T.

doi:10.1109/ultsym.2000.921549

Cited by 5 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, some physical constraints must be considered when designing a HIFU array for prostate treatment. The array is usually integrated with a cylindrical housing, which must have a diameter of 2.2 cm or less; this means that the designed array must have a width of 2.2 cm or less [14].…”

Section: Methodsmentioning

confidence: 99%

“…The parameters of these arrays (frequency, maximum steering angle, maximum depth of penetration (DOP), element size, total array size, and total number of elements) were chosen according to some trial and error simulation (i.e., optimization studies were not performed). Among the few studies that have looked into optimizing ultrasound array design parameters, these studies either do not apply for the case of the prostate [7], or do not take into account all the parameters involved [14]. This paper describes model calculations for the optimization of focused 2-D ultrasound phased arrays for treatment of prostate cancer and BPH, including physical parameters such as frequency, array size, penetration depth, steering angle, and Grating lobe effects.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimization of ultrasound array designs for high intensity focused treatment of prostate cancer and benign prostatic hyperplasia

Lweesy

Fraiwan

Al-Bataineh

et al. 2009

Med Biol Eng Comput

View full text Add to dashboard Cite

This paper describes the optimization of designing a two-dimensional (2-D) ultrasound phased array to be used for the treatment of both prostate cancer and benign prostatic hyperplasia. The optimization study took into consideration the physical constraints of the conventional method of treatment, and arrived at an optimized array design with the overall dimensions of 10 cm x 2.2 cm. The optimization study also addressed the following additional parameters: The maximum possible depth of penetration (DOP), the maximum possible steering angle, the Grating lobe level, the operating frequency, and the element size. In optimizing the design, the DOP and the steering angle are maximized while the grating lobe value is minimized. A 56 x 12 element 2-D array was found to be the optimum choice allowing both focusing and steering within the entire prostate without inducing damage at locations other than that of the focal point.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of ultrasound array designs for high intensity focused treatment of prostate cancer and benign prostatic hyperplasia

Lweesy

Fraiwan

Al-Bataineh

et al. 2009

Med Biol Eng Comput

View full text Add to dashboard Cite

show abstract

“…The defined small tissue volume wh ich is destroyed by one single ultrasonic beam is a "primary" lesion. In order to coagulate larger areas, mu ltip le lesions have to be added in a certain algorith m. Th is can be achieved by mechanically moving the energy source or electronically with a "phased array" [12][13][14][15][16].…”

Section: Main Principles Of Hifumentioning

confidence: 99%

High-Intensity Focused Ultrasound (HIFU) For the Prostate Cancer: 5-year Experience

Solovov¹,

Шаплыгин²,

Vozdvizhenskiy³

et al. 2013

IJTT

View full text Add to dashboard Cite

HIFU shows a successful treat ment for localized prostate cancer. Here we exp lored the effectiveness of the HIFU treatment for the prostate cancer, hormone-resistant prostate cancer and failu re after external beam rad iotherapy and radical prostatectomy. 795 patients were treated in our centre in 2007 -2012: Kap lan-Meir analyses of the total group indicated that the risk of progression was 23% after 5 years of follow-up. Our experience shows that HIFU ablation is safe, minimally invasive, effect ive treat ment with moderate side effects for the PC, hormone-resistant prostate cancer, HIFU also may be used as a salvage therapy.

show abstract

“…With FUS, tissue is non-invasively necrosed by elevating the temperature at the focal point above 60 C using short sonications (10-30 s) and deep FUS has been reported to successfully ablate prostate tissue without inducing damage to the rectal wall [2][3][4][5] . The goal of prostate ablation is mainly to remove a non-desirable growth of the prostate.…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional ultrasound phased array design for tissue ablation for treatment of benign prostatic hyperplasia

Saleh

Smith

2004

International Journal of Hyperthermia

View full text Add to dashboard Cite

This paper describes the design, construction and evaluation of a two-dimensional ultrasound phased array to be used in the treatment of benign prostatic hyperplasia. With two-dimensional phased arrays, the focal point position can be controlled by changing the electrical power and phase to the individual elements for focusing and electronically steering in a three-dimensional volume. The array was designed with a steering angle of +/-14 degrees in both transverse and longitudinal directions. A piezoelectric ceramic (PZT-8) was used as the material of the transducer, since it can handle the high power needed for tissue ablation and a matching layer was used for maximum acoustic power transmission to tissue. Analysis of the transducer ceramic and cable impedance has been designed for high power transfer with minimal capacitance and diameter. For this initial prototype, the final construction used magnet compatible housing and cabling for future application in a clinical magnetic resonance imaging system for temperature mapping of the focused ultrasound. To verify the capability of the transducer for focusing and steering, exposimetry was performed and the results correlated well with the calculated field. Ex vivo experiments were performed and indicated the capability of the transducer to ablate tissue using short sonications. For sonications with exposure time of 10, 15 and 20 s, the lesion size was roughly 1.8, 3.0 and 4.3 mm in diameter, respectively, which indicates the feasibility of this device.

show abstract

Design of focused ultrasound phased arrays for prostate treatment

Cited by 5 publications

References 6 publications

Optimization of ultrasound array designs for high intensity focused treatment of prostate cancer and benign prostatic hyperplasia

Optimization of ultrasound array designs for high intensity focused treatment of prostate cancer and benign prostatic hyperplasia

High-Intensity Focused Ultrasound (HIFU) For the Prostate Cancer: 5-year Experience

Two-dimensional ultrasound phased array design for tissue ablation for treatment of benign prostatic hyperplasia

Contact Info

Product

Resources

About