[Expansion of sensitivity area for magnetic resonance imaging of the hand using parallel-array coil].

Yasuo Takatsu, Kenichirou Yamamura, Tosiaki Miyati, Tetsuya Kimura, Tsuyoshi Ueyama, Akihiro Ishikuro

Research output: Contribution to journalArticlepeer-review


It is difficult for Rheumatoid Arthritis (RA) patients to remain in a strenuous position for a long time during examinations. The field of view (FOV): 250 mm is needed for hand examinations from the wrist to the finger. Two channel phased array coils are effective to use when examinations of the 'off center' are taken for the upper and lower extremities. The area of the array coils' sensitivity can be expanded by shifting both coil elements 40-60% in the opposite direction of the element's diameter. This method is given credibility due to the increased signal-to-noise ratio (SNR) in the peripheral regions (shifted directions), but loses value in the central area, as indicated by the decrease in SNR. This was confirmed in the image of the hand using visual assessment including the fat suppression technique. It was verified that the sensitivity area was expanded using Scheffe's method of paired comparison (Ura's modified method). An application at the other regions of the body can be expected to be used in the case of using parallel positioned coils during clinical situation.

Original languageEnglish
Pages (from-to)1346-1353
Number of pages8
JournalNihon Hoshasen Gijutsu Gakkai zasshi
Issue number10
Publication statusPublished - 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Medicine(all)


Dive into the research topics of '[Expansion of sensitivity area for magnetic resonance imaging of the hand using parallel-array coil].'. Together they form a unique fingerprint.

Cite this