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

Area x-ray beam equalization for digital angiography.

S Molloi1, J Tang, T Mather

  • 1Department of Radiological Sciences, University of California, Irvine 92697, USA. symolloi@uci.edu

Medical Physics
|January 5, 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

Polyoxometalate HIV-1 protease inhibitors. A new mode of protease inhibition.

Journal of the American Chemical Society·2001
Same author

The three-dimensional structure of alpha-actinin obtained by cryoelectron microscopy suggests a model for Ca(2+)-dependent actin binding.

Journal of molecular biology·2001
Same author

Particle size analysis as a tool for performance measurements in high rate effluent filtration.

Water science and technology : a journal of the International Association on Water Pollution Research·2001
Same author

Molecular cloning and characterization of chemokine-like factor 1 (CKLF1), a novel human cytokine with unique structure and potential chemotactic activity.

The Biochemical journal·2001
Same author

Propacetamol versus ketorolac for treatment of acute postoperative pain after total hip or knee replacement.

Anesthesia and analgesia·2001
Same author

Regional characteristics of sulfur and lead isotope ratios in the atmosphere at several Chinese urban sites.

Environmental science & technology·2001
Same journal

Correction to "On the shape of the radiation survival curve in tumor spheroids: The role of oxygen heterogeneity".

Medical physics·2026
Same journal

Multi-view constrained semi-supervised vertebra detection for 3D ultrasound spine volume.

Medical physics·2026
Same journal

Accuracy of quantitative <sup>177</sup>Lu SPECT/CT imaging: A systematic review.

Medical physics·2026
Same journal

Physics-constrained dual-domain network for CBCT reconstruction from orthogonal X-rays in gynecologic radiotherapy.

Medical physics·2026
Same journal

Decomposition-based harmonization for quantitative PET imaging across scanners and radiotracers.

Medical physics·2026
Same journal

Development and evaluation of an in vivo dose-based monitoring system for electron FLASH radiation therapy.

Medical physics·2026
See all related articles

This study introduces patient-specific filters for digital angiography using area beam equalization. This technique significantly enhances image quality and contrast-to-noise ratio (CNR) by reducing scatter-glare.

Area of Science:

  • Medical Imaging
  • Radiography
  • Digital Angiography

Background:

  • Digital angiography often suffers from uneven X-ray transmission, leading to suboptimal image quality.
  • Existing methods for beam equalization may have limitations in terms of customization and artifact generation.

Purpose of the Study:

  • To investigate an area beam equalization technique for generating patient-specific compensating filters.
  • To evaluate the impact of this technique on image quality, contrast-to-noise ratio (CNR), and scatter-glare in digital angiography.

Main Methods:

  • Developed patient-specific filters using a deformable material (CeO2) and an array of pistons.
  • Calculated attenuator thicknesses based on initial unequalized image gray levels.
  • Inserted fabricated filters into the X-ray beam near the focal spot to minimize artifacts.

Related Experiment Videos

Main Results:

  • Equalized images showed significantly improved local contrast and up to a fivefold increase in CNR.
  • Phantom and animal studies confirmed substantial image quality improvements with minimal artifacts.
  • Reduced scatter-glare fraction from 0.65 to 0.50 in underpenetrated regions.

Conclusions:

  • Area beam equalization effectively reduces scatter-glare and enhances CNR in digital angiography.
  • Patient-specific filters offer a promising approach for improving diagnostic accuracy in various imaging modalities.