Title
Improved Depth-of-Field Photoacoustic Microscopy with a Multifocal Point Transducer for Biomedical Imaging.
Abstract
In this study, a photoacoustic microscopy (PAM) system based on a multifocal point (MFP) transducer was fabricated to produce a large depth-of-field tissue image. The customized MFP transducer has seven focal points, distributed along with the transducer's axis, fabricated by separate spherically-focused surfaces. These surfaces generate distinct focal zones that are overlapped to extend the depth-of-field. This design allows extending the focal zone of 10 mm for the 11 MHz MFP transducer, which is a great improvement over the 0.48 mm focal zone of the 11 MHz single focal point (SFP) transducer. The PAM image penetration depths of a chicken-hemoglobin phantom using SFP and MFP transducers were measured as 5 mm and 8 mm, respectively. The significant increase in the PAM image-based penetration depth of the chicken-hemoglobin phantom was a result of using the customized MFP transducer.
Year
DOI
Venue
2020
10.3390/s20072020
SENSORS
Keywords
DocType
Volume
ultrasound,photoacoustic imaging,photoacoustic microscopy,biomedical imaging,multifocal point transducer
Journal
20
Issue
ISSN
Citations 
7
1424-8220
0
PageRank 
References 
Authors
0.34
0
7
Name
Order
Citations
PageRank
Thanh Phuoc Nguyen100.68
Van Tu Nguyen200.68
Sudip Mondal300.34
Van Hiep Pham400.68
Dinh Dat Vu500.34
Byung-Gak Kim601.01
JungHwan Oh752044.87