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Related Experiment Videos

Switched surface coil system for bilateral MR imaging.

C J Hardy1, R W Katzberg, R L Frey

  • 1General Electric Corporate Research and Development, Schenectady, NY 12301.

Radiology
|June 1, 1988
PubMed
Summary
This summary is machine-generated.

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Dynamic MR imaging of the temporomandibular joint using a balanced steady-state free precession sequence at 3T.

AJNR. American journal of neuroradiology·2011

This study introduces a novel magnetic resonance (MR) imaging technique for simultaneously capturing images from paired organs like the temporomandibular joint (TMJ). This method significantly reduces examination time without compromising diagnostic image quality.

Area of Science:

  • Medical Imaging
  • Biophysics
  • Radiology

Background:

  • Simultaneous imaging of paired organs presents technical challenges in magnetic resonance (MR) imaging.
  • Existing MR techniques often require specialized hardware or compromise image quality for speed.

Purpose of the Study:

  • To develop and validate a novel MR imaging method for parallel acquisition from paired organs.
  • To improve the efficiency of temporomandibular joint (TMJ) imaging by reducing patient examination time.

Main Methods:

  • Utilized two surface coil receivers for parallel MR data acquisition from bilateral TMJs.
  • Implemented interleaved sagittal sectioning with receiver toggling between coils.
  • Employed active gating of a diode blocking network for effective decoupling of non-receiving coils.

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Main Results:

  • Demonstrated effective coil decoupling independent of coil loading and positioning.
  • Achieved a 24% average decrease in total patient examination time in clinical studies.
  • Maintained diagnostic image quality in all cases, even with added coronal imaging.

Conclusions:

  • The presented MR imaging method enables efficient parallel acquisition from paired organs.
  • This technique reduces examination time for conditions like TMJ internal derangement without sacrificing diagnostic quality.
  • The method is compatible with existing single-coil MR reception hardware.