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

Optimized gradient pulse for use with EPI employing active acoustic control.

B L W Chapman1, B Haywood, P Mansfield

  • 1General Magnetic, Strelley Hall, Strelley, Nottingham, UK. general-magnetic@fsmail.net

Magnetic Resonance in Medicine
|October 31, 2003
PubMed
Summary

Active acoustic control significantly reduces MRI noise. A new acoustic gradient pulse combined with active control achieved a 50 dB noise reduction in echo-planar imaging (EPI).

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

Confirmation of specificity of reactivity in a solid phase ELISA for the detection of hepatitis E viral antigen improves utility of the assay.

Journal of virological methods·2017
Same author

Extra-hepatic manifestations of autochthonous hepatitis E infection.

Alimentary pharmacology & therapeutics·2014
Same author

Consensus guidelines from The American Society of Peritoneal Surface Malignancies on standardizing the delivery of hyperthermic intraperitoneal chemotherapy (HIPEC) in colorectal cancer patients in the United States.

Annals of surgical oncology·2013
Same author

Biological and medical imaging by NMR. 1978.

Journal of magnetic resonance (San Diego, Calif. : 1997)·2011
Same author

Systemic chemotherapy and surgical cytoreduction for poorly differentiated and signet ring cell adenocarcinomas of the appendix.

Annals of oncology : official journal of the European Society for Medical Oncology·2011
Same author

Controlled E-field gradient coils for MRI.

Physics in medicine and biology·2008

Area of Science:

  • Medical Imaging Physics
  • Acoustics Engineering
  • Biomedical Signal Processing

Background:

  • Acoustic noise from Magnetic Resonance Imaging (MRI), especially during high-speed echo-planar imaging (EPI), is a significant issue.
  • Previous active acoustic control methods achieved a 30 dB noise reduction using narrow-band spot frequencies.

Purpose of the Study:

  • To introduce a novel acoustic gradient pulse for EPI.
  • To enhance active acoustic control for greater noise reduction in MRI.

Main Methods:

  • Development of a new finite-duration oscillating acoustic gradient pulse incorporating a band of frequencies.
  • Integration of this pulse with active acoustic control systems for EPI.
  • Measurement of acoustic noise reduction levels.

Related Experiment Videos

Main Results:

  • The novel acoustic gradient pulse was designed for use as the switched read gradient in EPI.
  • Employing the new pulse with active acoustic control resulted in a substantial 50 dB reduction in acoustic noise.

Conclusions:

  • The developed acoustic gradient pulse effectively enhances active acoustic control for MRI.
  • This method offers a significant improvement in noise reduction for high-speed EPI, improving patient comfort and data quality.