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

Image stacking with entropy values in conventional angiography: initial experience.

Holger Schmitt1, Michael Grass, Sabine Heiland

  • 1Department of Neuroradiology, University of Heidelberg Medical Center, Im Neuenheimer Feld 400, D-69120 Heidelberg, Germany. holger_schmitt@med.uni-heidelberg.de

Radiology
|December 3, 2003
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

Multiparametric Characterization of Tough Clots Following Stroke Thrombectomy.

Clinical neuroradiology·2026
Same author

A Pilot Comparative Study of Multi-Contrast Dental MRI and CBCT: Clinical Correlates of Disease Status and Inflammatory Burden in Periodontitis.

Journal of clinical periodontology·2026
Same author

Sportverletzung Sportschaden : Organ der Gesellschaft fur Orthopadisch-Traumatologische Sportmedizin·2026
Same author

Back in the Game, But Maybe Not at the Top: Mid-term Sports Ability After Microfracturing For Juvenile Osteochondral Lesions Of The Talus.

Sportverletzung Sportschaden : Organ der Gesellschaft fur Orthopadisch-Traumatologische Sportmedizin·2026
Same author

Safety and Efficacy of Inhaled Natural Product Powders That Enhance Mucociliary Clearance.

AAPS PharmSciTech·2026
Same author

IDH status shapes glioma oncotopy: voxel-wise mapping of 644 adult diffuse gliomas.

Neuroradiology·2026
Same journal

Erratum for: Prediction of Lobar Emphysema Progression with a CT-Based Foundational Model.

Radiology·2026
Same journal

Erratum for: Associations of MRI-derived Paraspinal IMAT and LMM with Cardiometabolic Risk Factors: Results from a German Cohort.

Radiology·2026
Same journal

Erratum for: Blue Rubber Bleb Nevus Syndrome.

Radiology·2026
Same journal

Redefining the Clinical Role of MRI in Endometrial Cancer Staging.

Radiology·2026
Same journal

To Ablate or Not to Ablate: The Colorectal Liver Metastasis Question.

Radiology·2026
Same journal

The Limits of Radiologic Categorization in Pulmonary Nonsolid Nodules.

Radiology·2026
See all related articles

A new entropy method for angiographic image analysis improves visualization of small vessels and enhances contrast. This technique offers superior detail compared to the established maximum opacity method.

Area of Science:

  • Medical Imaging
  • Radiology
  • Image Processing

Background:

  • Angiographic imaging is crucial for visualizing blood vessels.
  • Current methods like maximum opacity have limitations in depicting fine vascular structures.
  • Enhancing contrast-to-noise ratio is key for diagnostic accuracy.

Purpose of the Study:

  • To introduce and evaluate a novel entropy-based method for stacking time-series angiographic images.
  • To compare the efficacy of the entropy method against the established maximum opacity method.
  • To assess improvements in vascular detail and image quality.

Main Methods:

  • The entropy method calculates the temporal entropy for each pixel in the image series.
  • This highlights regions with contrast agent passage.

Related Experiment Videos

  • Quantitative contrast-to-noise ratio analysis and qualitative assessment by independent viewers were performed on 11 cases.

    • Main Results:

    • The entropy method accentuates contrast agent bolus passage.
    • Significantly improved visualization of small peripheral vessels was observed.
    • Contrast-to-noise ratio increased by up to 1.97 times compared to maximum opacity images.

    Conclusions:

    • The entropy method provides superior vascular detail and image quality in angiography.
    • It offers a significant improvement in contrast-to-noise ratio over the maximum opacity method.
    • This technique holds promise for enhanced diagnostic interpretation of angiographic studies.