Automatic threshold selection algorithm to distinguish a tissue chromophore from the background in photoacoustic imaging.
Biomed Opt Express
; 12(7): 3836-3850, 2021 Jul 01.
Article
en En
| MEDLINE
| ID: mdl-34457383
ABSTRACT
The adaptive matched filter (AMF) is a method widely used in spectral unmixing to classify different tissue chromophores in photoacoustic images. However, a threshold needs to be applied to the AMF detection image to distinguish the desired tissue chromophores from the background. In this study, we propose an automatic threshold selection (ATS) algorithm capable of differentiating a target from the background, based on the features of the AMF detection image. The mean difference between the estimated thickness, using the ATS algorithm, and the known values was 0.17 SD (0.24) mm for the phantom inclusions and -0.05 SD (0.21) mm for the tissue samples of malignant melanoma. The evaluation shows that the thickness and the width of the phantom inclusions and the tumors can be estimated using AMF in an automatic way after applying the ATS algorithm.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Biomed Opt Express
Año:
2021
Tipo del documento:
Article
País de afiliación:
Suecia