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

Stair-step artifacts with single versus multiple detector-row helical CT.

D Fleischmann1, G D Rubin, D S Paik

  • 1Department of Radiology, Stanford University School of Medicine, 300 Pasteur Dr, S-072 Stanford, CA 94305-5105, USA.

Radiology
|July 11, 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

Systematic assessment of coronary calcium detectability and quantification on four generations of CT reconstruction techniques: a patient and phantom study.

The international journal of cardiovascular imaging·2023
Same author

Standardization in Quantitative Imaging: A Multicenter Comparison of Radiomic Features from Different Software Packages on Digital Reference Objects and Patient Data Sets.

Tomography (Ann Arbor, Mich.)·2020
Same author

Effect of low contrast medium-dose CTA on device sizing and access vessel assessment for TAVR.

European journal of radiology·2020
Same author

Radiomics in Brain Tumor: Image Assessment, Quantitative Feature Descriptors, and Machine-Learning Approaches.

AJNR. American journal of neuroradiology·2017
Same author

Bechstein's bats maintain individual social links despite a complete reorganisation of their colony structure.

Die Naturwissenschaften·2013
Same author

Imaging informatics: toward capturing and processing semantic information in radiology images.

Yearbook of medical informatics·2010

Four-channel helical computed tomography (CT) significantly reduces artifacts compared to single-channel helical CT. This advancement improves image quality for any given table increment, enhancing diagnostic accuracy in CT scans.

Area of Science:

  • Medical Imaging
  • Radiological Physics
  • Computed Tomography (CT)

Background:

  • Artifacts in helical computed tomography (CT) can degrade image quality and affect diagnostic accuracy.
  • Understanding the impact of acquisition parameters on artifact formation is crucial for optimizing CT protocols.
  • Comparing single-detector-row and multiple-detector-row helical CT is essential for evaluating technological advancements.

Purpose of the Study:

  • To compare artifact magnitude and appearance between single- and multiple-detector-row helical CT.
  • To analyze the influence of specific acquisition parameters on artifact generation in both CT systems.

Main Methods:

  • A cylindrical acrylic rod was scanned using single-channel and four-channel helical CT with varying beam widths, detector widths, and pitches.

Related Experiment Videos

  • Artifacts were quantified using the standard deviation of radius measurements (SD(r)) and analyzed for frequency patterns.
  • Volume-rendered images were subjectively assessed by blinded readers, correlating findings with quantitative measurements and acquisition parameters.

    • Main Results:

    • Four-channel helical CT demonstrated smaller SD(r) than single-channel helical CT for any given table increment (TI).
    • In single-channel helical CT, artifacts increased with beam width and pitch; in four-channel helical CT, they were proportional to TI.
    • Off-center positioning increased artifacts more significantly in four-channel than single-channel helical CT, yet overall image quality correlated strongly with SD(r).

    Conclusions:

    • Four-channel helical CT yields quantitatively and subjectively smaller artifacts compared to single-channel helical CT at equivalent table increments.
    • The findings support the use of multiple-detector-row helical CT for improved image quality and reduced artifact burden.