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Multiscale amplitude-modulation frequency-modulation (AM-FM) texture analysis of ultrasound images of the intima and media layers of the carotid artery
- Source :
- IEEE Transactions on Information Technology in Biomedicine, IEEE Trans.Inf.Technol.Biomed.
- Publication Year :
- 2011
-
Abstract
- The intima-media thickness (IMT) of the common carotid artery (CCA) is widely used as an early indicator of cardiovascular disease (CVD). Clinically, there is strong interest in identifying how the composition and texture of the media layer (ML) can be associated with the risk of stroke. In this study, we use 2-D amplitude-modulation frequency-modulation (AMFM) analysis of the intima-media complex (IMC), the ML, and intima layer (IL) of the CCA to detect texture changes as a function of age and sex. The study was performed on 100 ultrasound images acquired from asymptomatic subjects at risk of atherosclerosis. To investigate texture variations associated with age, we separated them into three age groups: 1) patients younger than 50 2) patients aged between 50 and 60 years old and 3) patients over 60 years old. We also separated the patients by sex. The IMC, ML, and IL were segmented manually by a neurovascular expert and also by a snake-based segmentation system. To reject strong edge artifacts, we prefilter with an AMFM filterbank that is centered along the horizontal frequency axis (parallel to the long axis of the IMC, ML, and IL), while removing the low-pass filter estimates and frequency bands with large, vertical frequency components. To investigate significant texture changes, we extract the instantaneous amplitude (IA) and the magnitude of the instantaneous frequency (IF) over each layer component, for low-, medium-, and high-frequency AMFM components. We detected significant texture differences between the higher risk age group of 60 years versus the lower risk age group of Cited By :18
- Subjects :
- Male
Intima-media thickness
Instantaneous frequency
Diseases
Frequency axis
Image texture
Modulation frequencies
middle aged
Image Processing, Computer-Assisted
Computer vision
Ultrasonics
Segmentation system
Common carotid artery
Stroke
Texture features
texture analysis
Ultrasonography
Gray scale
adult
Ultrasound
Age Factors
article
methodology
Textures
General Medicine
Middle Aged
Cardiovascular disease
Prefilters
Computer Science Applications
Ultrasonic applications
Amplitude-modulation frequency-modulation (AM–FM)
aged
female
Carotid Arteries
Low pass filters
Long axis
Cardiology
Ultrasound images
Engineering and Technology
Female
medicine.symptom
Biotechnology
Adult
medicine.medical_specialty
sex difference
Medical Engineering
Texture (music)
Lower risk
Asymptomatic
Amplitude modulation
High frequency HF
Edge artifacts
Texture variation
Sex Factors
male
Internal medicine
medicine.artery
Media layers
medicine
Humans
Frequency bands
Frequency components
human
Electrical and Electronic Engineering
Multiscales
Amplitude-modulation frequency-modulation (AMFM)
Aged
business.industry
echography
medicine.disease
Cardiovascular risk
image processing
carotid
age
intima-media thickness (IMT)
Clinical practices
Artificial intelligence
Age groups
business
Tunica Intima
Instantaneous amplitude
Layer components
Carotid artery
intima
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Information Technology in Biomedicine, IEEE Trans.Inf.Technol.Biomed.
- Accession number :
- edsair.doi.dedup.....60cc00c89bbe67053ec1ff84dd88b4f4