Performance Improvements to 2-D Ultrasound Arrays
Performance Improvements to 2-D Ultrasound Arrays
批准号:
6403082
负责人:
Wesley S. Hackenberger
金额:
$10.62万
依托单位:
依托单位国家:
美国
项目类别:
财政年份:
2001
资助国家:
美国
项目状态:
已结题
起止时间:
2001-07-01 至 2002-04-30
中文摘要
描述(由申请人提供):本计划采用先进的
多层陶瓷封装的图案化和对准技术
工业上构造具有多层PZT柱的2-D超声阵列,
增加电容并因此增加换能器信噪比(SNR)。
传统的2-D换能器阵列为医学应用提供了许多优点。
超声成像,但性能往往受到低电容
元件和阻抗匹配差。使用共烧多层技术,
生产单独的阵列元件是阻抗失配的一个很好的解决方案
因为电容随着层数的平方而增加
在一个元素中。据估计,3层二维阵列将使信噪比提高9
dB和5层阵列将实现接近14 dB的改善。使
电连接到精细尺度的三维陶瓷结构,
直到最近才有可能。电子陶瓷的发展
封装行业在过去5年中,75和25 1 lm分辨率的通孔
冲压和精确对准分别使这一概念成为可行。
在第一阶段的工作中,我们将通过建造一个
3.5到5 MHz的2-D阵列从多层PZT。
拟定商业应用:
2-D阵列的最直接应用是心脏体积成像。 成功
多层2-D阵列将是当前2-D阵列技术的直接替代品。
放射科和产科也存在真实的实时体积扫描市场,其中
慢速三维超声扫描的价值有限。
英文摘要
DESCRIPTION (Provided by Applicant): This proposed program uses advanced
patterning and alignment technology from the multiplayer ceramic packaging
industry to construct 2-D ultrasound arrays with multiplayer PZT posts to
increase capacitance and, therefore, transducer signal to noise ratio (SNR).
Conventional 2-D transducer arrays provide many advantages for medical
ultrasound imaging, but the performance often suffers from the low capacitance
elements and poor impedance matching. Use of cofired multiplayer technology to
produce individual array elements is a good solution to the impedance mismatch
problem because capacitance increases with the square of the number of layers
in an element. It was estimated that a 3-layer 2-D array will increase SNR by 9
dB and a 5 layer array will achieve close to 14 dB improvements. Making
electrical connections to fine scale, three dimensional ceramic structures was
not possible until recently. The progress made in the electronic ceramic
packaging industry in the past 5 years, with 75 and 25 1lm resolution for via
punching and precision alignment, respectively, has made this concept feasible.
For the Phase I effort, we will demonstrate the feasibility by constructing a
3.5 to 5 MHz 2-D array from multilayer PZT.
PROPOSED COMMERCIAL APPLICATION:
The most immediate application for 2-D arrays is cardiac volumetric imaging. Successful
multiplayer 2-D arrays would be drop-in replacement for current 2-D array technology.
Markets for real time volumetric scanning also exist in radiology and obstetrics where
slow 3-D ultrasound scanning is of limited value.
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High Frequency, Large Aperture Ultrasound Transducer Arrays for Volumetric Ophtha
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批准号:7051635
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项目类别:
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资助金额:$10.0万
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财政年份:2006
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负责人:Wesley S. Hackenberger
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依托单位:
Dynamically Focused High Frequency Ultrasound Transducer
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批准号:6930912
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项目类别:
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资助金额:$10.66万
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财政年份:2005
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负责人:Wesley S. Hackenberger
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依托单位:
Low Cost Lu-based Scintillator Crystals for PET Scanners
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批准号:6805270
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项目类别:
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资助金额:$23.03万
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财政年份:2003
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负责人:Wesley S. Hackenberger
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依托单位:
Micromachined Single Crystals for HF Transducers
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批准号:6689782
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项目类别:
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资助金额:$10.0万
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财政年份:2003
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负责人:Wesley S. Hackenberger
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依托单位:
Crystal Transducers for Harmonic Imaging
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批准号:7126826
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项目类别:
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资助金额:$41.08万
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财政年份:2003
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负责人:Wesley S. Hackenberger
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依托单位:
Crystal Transducers for Ultrasound Harmonic Imaging
-
批准号:6585036
-
项目类别:
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资助金额:$9.52万
-
财政年份:2003
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负责人:Wesley S. Hackenberger
-
依托单位:
Crystal Transducers for Harmonic Imaging
-
批准号:6882359
-
项目类别:
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资助金额:$33.57万
-
财政年份:2003
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负责人:Wesley S. Hackenberger
-
依托单位:
Low Cost Lu-based Scintillator Crystals for PET Scanners
-
批准号:6725560
-
项目类别:
-
资助金额:$23.03万
-
财政年份:2003
-
负责人:Wesley S. Hackenberger
-
依托单位:
High Frequency Ultrasound Arrays Mechanical Scanning
-
批准号:6483620
-
项目类别:
-
资助金额:$10.0万
-
财政年份:2002
-
负责人:Wesley S. Hackenberger
-
依托单位:
DEVELOPMENT OF HIGH FREQUENCY(>30 MHZ) ARRAY TRANSDUCERS
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批准号:6071513
-
项目类别:
-
资助金额:$9.89万
-
财政年份:2000
-
负责人:Wesley S. Hackenberger
-
依托单位:
Development of High Frequency Ultrasound Transducers
-
批准号:6403008
-
项目类别:
-
资助金额:$46.67万
-
财政年份:2000
-
负责人:Wesley S. Hackenberger
-
依托单位:
Development of High Frequency Ultrasound Transducers
-
批准号:6529860
-
项目类别:
-
资助金额:$32.71万
-
财政年份:2000
-
负责人:Wesley S. Hackenberger
-
依托单位: