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Identification and removal of reflection artifacts in minimally invasive photoacoustic imaging for accurate visualization of brachytherapy seeds
- Source :
- Photons Plus Ultrasound: Imaging and Sensing 2017, 10064
- Publication Year :
- 2017
-
Abstract
- Reflection artifacts caused by the high signal from the optical fiber/ needle tip reflecting off the seed is an important problem in minimally invasive photoacoustic imaging of brachytherapy seeds. The presence of these artifacts confounds the interpretation of images and reduces contrast. We apply a new method called PAFUSion (Photoacoustic-guided focused ultrasound) to identify and reduce reflection artifacts generated in interstitial illumination imaging of brachytherapy seeds. We present the system comprising of a US imager and linear array, with illumination provided via a cutting needle. Non-radioactive brachytherapy seeds are implanted in a tissue mimicking phantom and ex vivo porcine tissue. The PAFUSion-corrected imaging results successfully demonstrate that our approach can identify and strongly reduce reflection artifacts in the context of photoacoustic needle. The phantom result also shows that multi-spectral photoacoustics can separate signals between the seeds and other optical absorbers.
- Subjects :
- Materials science
Optical fiber
Reflection artifacts
medicine.medical_treatment
Brachytherapy
Context (language use)
01 natural sciences
Imaging phantom
law.invention
010309 optics
03 medical and health sciences
0302 clinical medicine
Optics
law
0103 physical sciences
Ultrasound
medicine
Photoacoustic-guided focused ultrasound
Photoacoustic spectroscopy
business.industry
Photoacoustics
food and beverages
Visualization
Photoacoustic needle
030220 oncology & carcinogenesis
Reflection (physics)
business
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Photons Plus Ultrasound: Imaging and Sensing 2017, 10064
- Accession number :
- edsair.doi.dedup.....0725ec00cdad8a4cbb64269ee73263e7