WO1998017178B1 - Measurement of object layer thickness using ultra-sonic methods and devices - Google Patents
Measurement of object layer thickness using ultra-sonic methods and devicesInfo
- Publication number
- WO1998017178B1 WO1998017178B1 PCT/US1997/018993 US9718993W WO9817178B1 WO 1998017178 B1 WO1998017178 B1 WO 1998017178B1 US 9718993 W US9718993 W US 9718993W WO 9817178 B1 WO9817178 B1 WO 9817178B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ultra
- sonic
- measurement
- reflective distance
- shortest reflective
- Prior art date
Links
- 238000005259 measurement Methods 0.000 title claims 7
- 230000005540 biological transmission Effects 0.000 claims abstract 7
- 239000000523 sample Substances 0.000 claims abstract 6
- 210000000577 Adipose Tissue Anatomy 0.000 claims 4
- 210000003195 Fascia Anatomy 0.000 claims 1
- 210000003205 Muscles Anatomy 0.000 claims 1
- 210000003491 Skin Anatomy 0.000 claims 1
- 210000001519 tissues Anatomy 0.000 claims 1
Abstract
The present invention provides for a method of measuring layer thickness in an object comprising transmitting at least a first and a second ultra-sonic pulse from at least a first and second position; measuring at least one reflective distance from the first pulse and at least one reflective distance from the second pulse, wherein the reflective distance is from the object's external surface (or probe) to a reflective interface (5) of at least one layer; selecting the reflective distance having the shortest reflective distance to indicate the distance between the external surface (or probe surface) and the reflective interface (5) of at least one layer, wherein the selecting of the shortest reflective distance reduces ultra-sonic transmission parallax of the first and second pulses relative to a plane (4) in the object.
Claims
AMENDED CLAIMS
[received by the International Bureau on 29 May 1998 (29.05.98); original claim 28 amended; remaining claims unchanged (1 page)]
27. The method of claim 25. further comprising a computational unit that corrects for non-orthogonal probe alignment, wherein said computational unit permits computional determination of a shortest reflective distance using at least the following equation to calculate reflective distances: d=SOS x t/2. 28. A compact ultra-sonic system, comprising: at least a first ultra-sonic source and a second ultra-sonic source in a probe, said first ultra-sonic source provides a first pulse with a first transmission angle for the measurement of a shortest reflective distance with respect to a plane of an object and said second ultra-sonic source provides a second pulse with a second transmission angle for the measurement of a shortest reflective distance with respect to said plane. said first ultra-sonic source has a first detector that receives an alpha ultra-sonic signal, and said second ultra-sonic source has a second detector that receives a beta ultra-sonic signal, wherein said first transmission angle and said second transmission angle improve the measurement of a shortest reflective distance compared to the measurement of a shortest reflective distance in the absence of said first transmission angle and said second transmission angle, or further wherein said first ultra-sonic source and second ultra-sonic source comprise at least one linear array of ultra-sonic crystals that can be sequentially timed to improve measurement of said shortest reflective distance compared to the measurement of said shortest reflective in the absence of said sequential timing.
29. The ultra-sonic system of claim 28, wherein said probe has a hand held housing adapted for interrogating said object and said object is a human. 30. The ultra-sonic system of claim 29, further comprising a computational unit that corrects for non-orthogonal probe alignment, wherein said computational unit permits computational determination of a shortest reflective distance.
31. The ultra-sonic system of claim 30. wherein said human comprises body adipose tissue and said shortest reflective distance is in a tissue with 1) a skin/adipose tissue interface and 2) an adipose tissue/muscle tissue or adipose tissue/fascia interface.
32. The ultra-sonic system of claim 28, wherein said second ultra-sonic source transmits said beta ultra-sonic signal.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002269450A CA2269450A1 (en) | 1996-10-21 | 1997-10-21 | Measurement of object layer thickness using ultra-sonic methods and devices |
EP97911828A EP1006879B1 (en) | 1996-10-21 | 1997-10-21 | Measurement of object layer thickness using ultra-sonic methods and devices |
JP51957098A JP2002512537A (en) | 1996-10-21 | 1997-10-21 | Method for measuring layer structure of object using ultrasonic method and apparatus |
AT97911828T ATE247925T1 (en) | 1996-10-21 | 1997-10-21 | ULTRASONIC METHOD AND DEVICE FOR MEASURING THE LAYER THICKNESS OF A BODY |
DE69724468T DE69724468D1 (en) | 1996-10-21 | 1997-10-21 | ULTRASONIC METHOD AND DEVICE FOR MEASURING THE LAYER THICKNESS OF A BODY |
AU49114/97A AU736441B2 (en) | 1996-10-21 | 1997-10-21 | Measurement of object layer thickness using ultra-sonic methods and devices |
US10/207,707 US6585652B2 (en) | 1996-10-21 | 2002-07-29 | Measurement of object layer thickness using handheld ultra-sonic devices and methods thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/731,821 | 1996-10-21 | ||
US08/731,821 US5941825A (en) | 1996-10-21 | 1996-10-21 | Measurement of body fat using ultrasound methods and devices |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/731,821 Continuation-In-Part US5941825A (en) | 1996-10-21 | 1996-10-21 | Measurement of body fat using ultrasound methods and devices |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US27358699A Continuation | 1996-10-21 | 1999-03-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1998017178A1 WO1998017178A1 (en) | 1998-04-30 |
WO1998017178B1 true WO1998017178B1 (en) | 1998-07-16 |
Family
ID=24941093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1997/018993 WO1998017178A1 (en) | 1996-10-21 | 1997-10-21 | Measurement of object layer thickness using ultra-sonic methods and devices |
Country Status (8)
Country | Link |
---|---|
US (2) | US5941825A (en) |
EP (1) | EP1006879B1 (en) |
JP (1) | JP2002512537A (en) |
AT (1) | ATE247925T1 (en) |
AU (1) | AU736441B2 (en) |
CA (1) | CA2269450A1 (en) |
DE (1) | DE69724468D1 (en) |
WO (1) | WO1998017178A1 (en) |
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- 1997-10-21 JP JP51957098A patent/JP2002512537A/en active Pending
- 1997-10-21 DE DE69724468T patent/DE69724468D1/en not_active Expired - Lifetime
- 1997-10-21 EP EP97911828A patent/EP1006879B1/en not_active Expired - Lifetime
- 1997-10-21 AT AT97911828T patent/ATE247925T1/en not_active IP Right Cessation
-
2002
- 2002-07-29 US US10/207,707 patent/US6585652B2/en not_active Expired - Fee Related
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