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Enhancing Lateral Contrast Using Multi-perspective Ultrasound Imaging of Abdominal Aortas
- Source :
- Ultrasound in Medicine and Biology, 47(3), 535-545. Elsevier
- Publication Year :
- 2021
- Publisher :
- Elsevier, 2021.
-
Abstract
- Vascular ultrasound imaging is inherently hampered by low lateral resolution and contrast. Steering of the ultrasound beams can be used to overcome these limitations in superficial artery imaging because the aperture-to-depth ratio is relatively high. However, in arteries located at larger depths, the steered beams do not overlap for larger steering angles. In this study, the ultrasound probe is physically translated over the abdomen to create large angles between acquisitions, while maintaining overlap on the abdominal aorta. In one phantom setup and 11 volunteers, 2-D cross-sectional multi-perspective ultrasound images of the abdominal aorta were acquired using seven angles between –45° and +45°. Automatic registration of the recorded images was performed by automatic feature detection of the aorta and spine. This automatic detection was successful in 62 out of 77 image sets. Compounded multi-perspective images showed an increase of contrast-to-noise ratios from 0.6 ± 0.1 to 1.2 ± 0.2 over the entire heart cycle in volunteers.
- Subjects :
- Adult
Multi-perspective
Acoustics and Ultrasonics
media_common.quotation_subject
Biophysics
030204 cardiovascular system & hematology
Cardiovascular
Patient Positioning
Imaging phantom
030218 nuclear medicine & medical imaging
03 medical and health sciences
0302 clinical medicine
medicine.artery
Ultrasound
medicine
Humans
Contrast (vision)
Radiology, Nuclear Medicine and imaging
Aorta, Abdominal
Aorta
Ultrasonography
Feature detection (computer vision)
media_common
Radiological and Ultrasound Technology
Phantoms, Imaging
business.industry
Abdominal aorta
medicine.anatomical_structure
Abdomen
business
Biomedical engineering
Artery
Subjects
Details
- Language :
- English
- ISSN :
- 03015629
- Volume :
- 47
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Ultrasound in Medicine and Biology
- Accession number :
- edsair.doi.dedup.....1f2b27967cabad87f89ef30028b56def