Title:
【発明の名称】擬ランダム分布超音波変換器アレイ
Document Type and Number:
Japanese Patent JP2002542003
Kind Code:
A
Abstract:
An ultrasound transducer array suitable for medical uses such as tissue ablation and short duration high intensity hyperthermia has a plurality of ultrasound transducer elements dispersed across a substrate surface for focusing ultrasound energy over a predetermined focal volume. Particularly optimal results are obtained where the elements are dispersed over the substrate surface in a quasi-random distribution, where the total radiating area of the elements occupying between approximately 40 and 70 % of the total array area, and the frequency of operation of the ultrasound elements and the average diameter of the elements are related according to the expression: d=Axc/f.
Inventors:
Jeffrey Warren Hand
Leonid Rafailovich Gabriloff
Leonid Rafailovich Gabriloff
Application Number:
JP2000600259A
Publication Date:
December 10, 2002
Filing Date:
February 17, 2000
Export Citation:
Assignee:
Imperial College Innovations Limited
International Classes:
A61B18/00; A61N7/02; B06B1/06; B06B3/04; G10K11/32; G10K11/34; H04R17/00; A61B17/22; (IPC1-7): B06B1/06; A61B18/00; B06B3/04; H04R17/00
Domestic Patent References:
| JPH09192139A | 1997-07-29 | |||
| JPH07504339A | 1995-05-18 |
Other References:
JPN6009064109, Ｓｔｅｐｈｅｎ Ａ． Ｇｏｓｓ, "Ｓｐａｒｓｅ Ｒａｎｄｏｍ Ｕｌｔｒａｓｏｕｎｄ Ｐｈａｓｅｄ Ａｒｒａｙ ｆｏｒ Ｆｏｃａｌ Ｓｕｒｇｅｒｙ", ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ Ｕｌｔｒａｓｏｎｉｃｓ， Ｆｅｒｒｏｅｌｅｃｔｒｉｃｓ， ａｎｄ Ｆｒｅｑｕｅｎｃｙ Ｃｏｎｔｒｏｌ, 199611, Ｖｏｌ．４３ Ｎｏ．６, １１１１頁−１１２１頁, US, ＩＥＥＥ
JPN6009064111, ＷＡＮ Ｈ ＥＴ ＡＬ，, "Ｕｌｔｒａｓｏｕｎｄ Ｓｕｒｇｅｒｙ： Ｃｏｍｐａｒｉｓｏｎ ｏｆ Ｓｔｒａｔｅｇｉｅｓ Ｕｓｉｎｇ Ｐｈａｓｅｄ Ａｒｒａｙ Ｓｙｓｔｅｍｓ", ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ Ｕｌｔｒａｓｏｎｉｃｓ， Ｆｅｒｒｏｅｌｅｃｔｒｉｃｓ， ａｎｄ Ｆｒｅｑｕｅｎｃｙ Ｃｏｎｔｒｏｌ, 199611, Ｖｏｌ．４３ Ｎｏ．６, １１１１頁−１１２１頁, US, ＩＥＥＥ
JPN6009064111, ＷＡＮ Ｈ ＥＴ ＡＬ，, "Ｕｌｔｒａｓｏｕｎｄ Ｓｕｒｇｅｒｙ： Ｃｏｍｐａｒｉｓｏｎ ｏｆ Ｓｔｒａｔｅｇｉｅｓ Ｕｓｉｎｇ Ｐｈａｓｅｄ Ａｒｒａｙ Ｓｙｓｔｅｍｓ", ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ Ｕｌｔｒａｓｏｎｉｃｓ， Ｆｅｒｒｏｅｌｅｃｔｒｉｃｓ， ａｎｄ Ｆｒｅｑｕｅｎｃｙ Ｃｏｎｔｒｏｌ, 199611, Ｖｏｌ．４３ Ｎｏ．６, １１１１頁−１１２１頁, US, ＩＥＥＥ
Attorney, Agent or Firm:
Masatake Shiga (7 outside)