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The feasibility study of the transmission mode photoacoustic measurement of human calcaneus bone in vivo
- Source :
- Photoacoustics, Vol 23, Iss, Pp 100273-(2021), Photoacoustics
- Publication Year :
- 2021
- Publisher :
- Elsevier, 2021.
-
Abstract
- The photoacoustic (PA) technique is uniquely positioned for biomedical applications primarily due to its ability to visualize optical absorption contrast in deep tissue at ultrasound resolution. In this work, via both three-dimensional (3D) numerical simulations and in vivo experiments on human subjects, we investigated the possibility of PA measurement of human calcaneus bones in vivo in a non-invasive manner, as well as its feasibility to differentiate osteoporosis patients from normal subjects. The results from the simulations and the experiments both demonstrated that, when one side of the heel is illuminated by laser with light fluence under the ANSI safety limit, the PA signal generated in the human calcaneus bone can be detected by an ultrasonic transducer at the other side of the heel (i.e. transmission mode). Quantitative power spectral analyses of the calcaneus bone PA signals were also conducted, demonstrating that the microarchitectural changes in calcaneus bone due to osteoporosis can be detected, as reflected by enhanced high frequency components in detected PA bone signal. Further statistical analysis of the experimental results from 10 osteoporosis patients and 10 healthy volunteers showed that the weighted frequency as a quantified PA spectral parameter can differentiate the two subject groups with statistical significance.
- Subjects :
- Materials science
Heel
QC1-999
Osteoporosis
Three-dimensional simulation
QC221-246
02 engineering and technology
01 natural sciences
Signal
law.invention
010309 optics
Tissue characterization
law
In vivo
0103 physical sciences
medicine
Radiology, Nuclear Medicine and imaging
business.industry
Physics
Ultrasound
Bone microarchitecture
Acoustics. Sound
QC350-467
Optics. Light
021001 nanoscience & nanotechnology
Laser
medicine.disease
Atomic and Molecular Physics, and Optics
medicine.anatomical_structure
Photoacoustic measurement
Ultrasonic sensor
Calcaneus
0210 nano-technology
business
Research Article
Biomedical engineering
Subjects
Details
- Language :
- English
- ISSN :
- 22135979
- Volume :
- 23
- Database :
- OpenAIRE
- Journal :
- Photoacoustics
- Accession number :
- edsair.doi.dedup.....8c10952a44adc020c8963d603163bdaa