Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Wavelet based multiresolution expectation maximization image reconstruction algorithm for positron emission

A Raheja1, A P Dhawan

  • 1Department of Computer Science, Philadelphia University, Philadelphia, PA 19144, USA.

Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society
|September 29, 2000
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Eye-Hand Coordination Assessment Metrics Using a Multi-Platform Haptic System with Eye-Tracking and Motion Capture Feedback.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2018
Same author

Intra-operative measurement of tumour size in breast cancer and its comparison with other methods: a prospective study.

Ecancermedicalscience·2012
Same author

Non-invasive diagnosing malignant melanoma by multi-spectral optical Nevoscope.

Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference·2007
Same author

Planar visual fusion scintigraphy.

Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference·2007
Same author

Three dimensional reconstruction of coronary arteries from two views.

Computer methods and programs in biomedicine·2001
Same author

Limited contact dynamic compression in diaphyseal fractures of the humerus: good outcome in 51 patients.

Acta orthopaedica Scandinavica·2001
Same journal

Self-supervised isotropic reconstruction for abnormality detection in anisotropic MRI.

Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society·2026
Same journal

WDBDM: Wavelet-based dual-branch diffusion model for low-dose CT and PET denoising.

Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society·2026
Same journal

ScribSAM: A robust scribble-supervised framework for spatiotemporal segmentation of breast lesions in ultrasound videos.

Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society·2026
Same journal

Anatomically and biochemically guided deep image prior for sodium MRI denoising.

Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society·2026
Same journal

Segment Anything Model for medical image segmentation: A review.

Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society·2026
Same journal

HiCAF-Net: A Hierarchical Cross-Attention Fusion framework for cross-cancer subtype classification using histopathological and genomic data.

Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society·2026
See all related articles

This study introduces a Wavelet-based Multiresolution EM (WMREM) algorithm for Positron Emission Tomography (PET) image reconstruction. WMREM enhances image quality and reduces iterations by utilizing wavelet transforms for multiresolution analysis.

Area of Science:

  • Medical Imaging
  • Signal Processing
  • Computational Science

Background:

  • Maximum Likelihood (ML) estimation based Expectation Maximization (EM) is a standard for Positron Emission Tomography (PET) image reconstruction.
  • Previous work introduced multigrid (MG) and multiresolution (MR) concepts to EM-based PET reconstruction.
  • Existing methods require significant computational resources and iterations for high-quality image reconstruction.

Purpose of the Study:

  • To develop a Wavelet-based Multiresolution EM (WMREM) algorithm for improved PET image reconstruction.
  • To leverage wavelet transform properties for efficient multiresolution analysis in both image and data spaces.
  • To design and evaluate customized biorthogonal wavelet filters for enhanced reconstruction.

Main Methods:

Related Experiment Videos

  • The study transforms existing multigrid EM (MGEM) and multiresolution EM (MREM) algorithms into a WMREM framework.
  • A 2D-wavelet transform is applied to acquired PET data to create a multiresolution data space.
  • Wavelet transform is used for both multiresolution reconstruction and determining resolution switching criteria within the EM algorithm.

    • Main Results:

    • The WMREM algorithm effectively reconstructs PET images at varying spatial resolutions.
    • Wavelet transform's frequency and spatial localization properties are utilized to improve the EM estimation process.
    • The multiresolution approach recovers low-frequency image components at coarser resolutions, reducing overall iterations needed for high-frequency component recovery.

    Conclusions:

    • The WMREM algorithm offers an efficient and effective approach to PET image reconstruction.
    • The use of wavelet transforms in multiresolution EM significantly enhances reconstruction quality and computational efficiency.
    • Customized biorthogonal wavelet filters designed via the lifting method show promise for PET imaging applications.