101. Improving the spatial resolution of intravascular ultrasound imaging with synthetic aperture Fourier-based methods
- Author
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T. Rastello, Philippe Delachartre, Didier Vray, F. Schoofs, Imagerie Ultrasonore, Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche et d'Application en Traitement de l'Image et du Signal (CREATIS), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Supérieure Chimie Physique Électronique de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)
- Subjects
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph] ,Synthetic aperture radar ,Image formation ,Point spread function ,medicine.diagnostic_test ,[SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging ,business.industry ,Computer science ,imagerie_ultrasonore ,Imagerie Ultrasonore ,symbols.namesake ,Transducer ,Optics ,Fourier transform ,Kernel (image processing) ,Computer Science::Computer Vision and Pattern Recognition ,Intravascular ultrasound ,categₛt2i ,[INFO.INFO-IM]Computer Science [cs]/Medical Imaging ,symbols ,medicine ,business ,[SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing ,Image resolution ,ComputingMilieux_MISCELLANEOUS - Abstract
Intravascular ultrasound imaging using a rotating transducer produces images which includes the Point Spread Function of the imaging system. It results a lack of spatial resolution for the images. After the modelization of the image formation, the authors take into account the characteristics of the PSF in order to suggest an original Synthetic Aperture Focusing Technique (SAFT). The authors propose a kernel for phase-only processing. Improvements in spatial resolution are shown on experimental results for the imaging of steel wires with an imaging system using a rotating transducer operating at 30 MHz.
- Published
- 2002
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