The Journal of the Korea Contents Association (한국콘텐츠학회논문지)

The Korea Contents Association (한국콘텐츠학회)
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Comparative Study of a Multi-Channel Coils of Magnetic Resonance Imaging(MRI) Signal Intensities under Identical Parameters

동일한 조건의 자기공명검사에서 코일의 채널수 변화에 따른 신호강도의 평가

  • 손순룡 (원광보건대학교 방사선과)
  • Received : 2019.02.08
  • Accepted : 2019.03.08
  • Published : 2019.06.28
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Abstract

The purpose of this study was to determine how the different number of channels of coils were related in the perceived signal intensity under identical parameters and area. Dedicated knee phantoms were scanned consecutively using both of the 16-channel and 8-channel knee coils. The T1 weighted and T2 weighted sequences were acquired using both coils to compare the signal intensities according to the number of channels. As a result, the 16-channel knee coils outperformed the 8-channel knee coils and the signal intensity was significantly increased in both of the T1 and T2 weighted images with the 16-channel coil. In conclusion, it is considered that better signal intensities and more clinical utility can be provided, when coils with more number of channels are used rather than using the coils with smaller number of channels.

본 연구는 동일한 조건과 동일한 부위에 채널수가 다른 코일을 적용하여 신호강도를 비교함으로써 신호강도를 향상시키는데 채널수의 관련성을 알아보고자 하였다. 연구방법은 8 채널과 16 채널의 Knee 코일에 전용 팬텀을 장착한 후 T1, T2 강조영상을 획득하여 코일의 채널수에 따라 영상의 신호강도가 어느 정도 차이가 있는지 비교하였다. 연구결과 T1, T2 강조영상 모두 8채널 보다 16 채널 코일을 사용하였을 때 영상의 신호강도가 유의하게 증가하였다. 결론적으로 채널수가 적은 코일 보다는 많은 코일을 사용하는 것이 신호강도를 증가시킬 수 있었으므로 임상적용에 유용성이 크다고 판단된다.

Keywords

CCTHCV_2019_v19n6_418_f0001.png 이미지

Fig. 1. Experimental method according to the number of channels of coil

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Fig. 2. Phantom images according to the number of channels of coil

Table 1. Image parameters

CCTHCV_2019_v19n6_418_t0001.png 이미지

Table 2. Signal intensity according to the number of channels of the coil

CCTHCV_2019_v19n6_418_t0002.png 이미지

Table 3. Paired T-test according to the number of channels of coil

CCTHCV_2019_v19n6_418_t0003.png 이미지

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