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

K-space filter effect in three-dimensional contrast MR angiography

K Ito1, J Kato, S Okada

  • 1Department of Radiology, Chiba Hokusoh Hospital, Nippon Medical School, Japan.

Acta Radiologica (Stockholm, Sweden : 1987)
|January 1, 1997
PubMed
Summary

Temporal misregistration in 3-D contrast MR angiography causes spatial artifacts. This phantom study demonstrates how contrast agent passage during data acquisition degrades image quality.

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

[Malignant tumor and apoptosis].

Nihon Naika Gakkai zasshi. The Journal of the Japanese Society of Internal Medicine·1997
Same author

Cardiac secretion of adrenomedullin by percutaneous transluminal coronary angioplasty.

Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme·1997
Same author

Relation between nocturnal decline in blood pressure and mortality. The Ohasama Study.

American journal of hypertension·1997
Same author

Intra-mesenteric artery steroid administration relieved severe refractory gastro-intestinal graft-vs.-host disease in an allogeneic bone marrow transplantation patient.

American journal of hematology·1997
Same author

Acute exacerbation of hepatitis due to reactivation of hepatitis B virus with mutations in the core region after chemotherapy for malignant lymphoma.

Journal of gastroenterology·1997
Same author

Prethrombotic state due to hypercoagulability in patients with permanent transvenous pacemakers.

Angiology·1997

Area of Science:

  • Medical Imaging
  • Radiology
  • Magnetic Resonance Imaging

Background:

  • Three-dimensional (3-D) contrast MR angiography is crucial for visualizing blood vessels.
  • Image quality in 3-D contrast MR angiography can be compromised by temporal misregistration.

Purpose of the Study:

  • To investigate the impact of temporal misregistration on 3-D contrast MR angiography image quality.
  • To demonstrate the effect of contrast agent arrival timing on image reconstruction using phantom experiments.

Main Methods:

  • MR imaging of a phantom tube containing flowing materials.
  • Simulated contrast agent passage by switching from water to Gd-DTPA solution mid-acquisition.

Main Results:

  • A clear signal was obtained with Gd-DTPA solution, unlike water.

Related Experiment Videos

  • Blurring and ghost artifacts were observed along the phase-encoding direction when the contrast agent was introduced mid-acquisition.

    • Conclusions:

    • The transient passage of contrast agents during 3-D contrast MR angiography induces a k-space filter effect.
    • This effect leads to spatial artifacts in the reconstructed MR angiography images.