All-optical scanhead for ultrasound and photoacoustic dual-modality imaging.
Opt Express
; 20(2): 1588-96, 2012 Jan 16.
Article
em En
| MEDLINE
| ID: mdl-22274501
ABSTRACT
We propose a new scanhead design for combined ultrasound (US)/photoacoustic (PA) imaging that can be applied to dual-modality microscopy and biomedical imaging. Both imaging modalities employ the optical generation and detection of acoustic waves. The scanhead consists of an optical fiber with an axicon tip for excitation, and a microring for acoustic detection. No conventional piezoelectric device is needed, and the cost of the design makes it suitable for one-time, disposable use. Furthermore, a single laser pulse is employed to generate both US and PA signals. A subband imaging method can be applied to the receiver to enhance the contrast between the US and PA signals. Phantom data demonstrate the feasibility of this approach.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ultrassonografia
/
Imagens de Fantasmas
/
Tecnologia de Fibra Óptica
/
Técnicas Fotoacústicas
/
Microscopia
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article