지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한자기공명의과학회 Investigative Magnetic Resonance Imaging Investigative Magnetic Resonance Imaging 제16권 제2호
- 발행연도
- 2012.1
- 수록면
- 103 - 114 (12page)
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초록· 키워드
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Purpose : In an attempt to further improve the radiofrequency (RF) magnetic (B1) field strength in temporomandibular joint (TMJ) imaging, a 4-channel spiral-loop coil array with RF circuitry was designed and compared with a 4-channel single-loop coil array in terms of B1 field, RF transmit (B1+), signal-to-noise ratio (SNR), and applicability to TMJ imaging in 7T MRI.
Materials and Methods: The single- and 4-channel spiral-loop coil arrays were constructed based on the electromagnetic (EM) simulation for the investigation of B1 field. To evaluate the computer simulation results, the B1 field and B1+ maps were measured in 7T.
Results: In the EM simulation result and MRI study at 7T, the 4-channel spiral-loop coil array found a superior B1 performance and a higher B1+ profile inside the human head as well as a slightly better SNR than the 4-channel single-loop coil array.
Conclusion: Although B1 fields are produced under the influence of the dielectric properties of the subject rather than the coil configuration alone at 7T, each RF coil exhibited not only special but also specific characteristics that could make it suited for specific application such as TMJ imaging.
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