Dual phased array coils for high-resolution MRI of the shoulder

R. Sashi, M. Terui, K. Narita, H. Hirano, N. Tomura, J. Watarai, E. Itoi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We connected two 3-inch coils to a dual phased array receiver system and sandwiched the shoulder between the two coils. To obtain a quantitative assessment of the improved SNR, we imaged a phantom with both the dual phased array coils and the standard shoulder coil. SNR as a function of distance from the coils was computed by the National Electrical Manufacturers Association (NEMA) standard. At the expected depth of the humeral head, the SNR of the phased array coils on single excitation was 1.42 times that of the standard shoulder coil on two excitations. The higher quality of the images on single excitation shortened the imaging procedures. The dual phased array coils realized the minimum FOV: 8 cm with a pixel of 0.31 x 0.41 mm. The dual phased array coils achieved high spatial resolution images of the shoulder with significantly shorter imaging times.

Original languageEnglish
Pages (from-to)13-15
Number of pages3
JournalRadiation Medicine - Medical Imaging and Radiation Oncology
Volume15
Issue number1
Publication statusPublished - 1997 Apr 28
Externally publishedYes

Keywords

  • MR imaging
  • dual phased array coils
  • shoulder

ASJC Scopus subject areas

  • Radiation
  • Radiology Nuclear Medicine and imaging
  • Oncology

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