WFRF:(Olsson Lennart)
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Secondary sound classification for the assessment of focus positioning in shock-wave lithotripsy
- Grennberg, Anders (author)
-
- Almquist, Lars-Olof (author)
- Lunds universitet
-
- Holmner, Nils-Gunnar (author)
- Lunds universitet
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- (creator_code:org_t)
- Lund : Medicinsk Teknik, 1993
- 1993
- English.
- In: IX Nordic Meeting on Medical and Biological Engineering. - Lund : Medicinsk Teknik.
- Conference paper (other academic/artistic)
Abstract
Subject headings
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- A problem encountered when using acoustic shock-waves for kidney stone disintegration is that the positioning of the focus relative to a stone, for the best possible fragmenting effect, is crtitical. The standard methods for focus positioning are ultrasound or x-ray imaging. These methods are, however, not always sufficient and a better indication of a well positioned focus would be valuable. The secondary sound emitted as a result of each shock-wave has been found to contain valuable information. A skilled operator is able to hear from the timbre of these sound pulses when the positioning of the focus is adequate. A method for the automatic evaluation of secondary sounds, using a computer, is developed in this work.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Keyword
- Signalbehandling
- Signal Processing
Publication and Content Type
- vet (subject category)
- kon (subject category)
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