TY - JOUR
T1 - Oxygen-enhanced lung magnetic resonance imaging
T2 - Influence of inversion pulse slice selectivity on inversion recovery half-Fourier single-shot turbo spin-echo signal
AU - Takenaka, Daisuke
AU - Puderbach, Michael
AU - Ohno, Yoshiharu
AU - Risse, Frank
AU - Ley, Sebastian
AU - Sugimura, Kazuro
AU - Kauczor, Hans Ulrich
N1 - Funding Information:
Acknowledgment. This project was supported by the exchange program of the Japanese-German Radiological Affiliation.
Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011/5
Y1 - 2011/5
N2 - Purpose. The purpose of this study was to evaluate in vivo the influence of inversion pulse slice selectivity on oxygen-enhanced magnetic resonance imaging (MRI). Materials and methods. Thirteen healthy volunteers were studied with a two-dimensional cardiac- and respiratory-gated adiabatic inversion-recovery half-Fourier single-shot turbo spin-echo (HASTE) sequence with either slice-selective or non-slice-selective inversion recovery (IR) pulse at inversion times increasing from 300 to 1400 ms. The signal-to-noise ratio (SNR) at every inversion time (TI), real signal difference (ΔSI), and relative enhancement ratio of lung parenchyma at TI ≥ 800 ms were statistically compared for oxygen-enhanced and non-oxygen-enhanced MR images with slice-selective or non-slice-selective IR pulses. Results. The SNRs of acquisitions with slice-selective IR pulses were significantly higher than those of non-sliceselective IR pulses (P < 0.05). At TI 800 ms, the ΔSI of lung parenchyma on IR-HASTE images with slice-selective inversion pulse type was significantly higher than on that with the non-slice-selective type (P < 0.05). Relative enhancement ratios of the slice-selective IR pulses were significantly lower than those of non-slice-selective IR pulses at TIs between 800 and 1400 ms (P < 0.05). Conclusion: Slice selectivity of inversion pulse type affects oxygen-enhanced MRI in vivo.
AB - Purpose. The purpose of this study was to evaluate in vivo the influence of inversion pulse slice selectivity on oxygen-enhanced magnetic resonance imaging (MRI). Materials and methods. Thirteen healthy volunteers were studied with a two-dimensional cardiac- and respiratory-gated adiabatic inversion-recovery half-Fourier single-shot turbo spin-echo (HASTE) sequence with either slice-selective or non-slice-selective inversion recovery (IR) pulse at inversion times increasing from 300 to 1400 ms. The signal-to-noise ratio (SNR) at every inversion time (TI), real signal difference (ΔSI), and relative enhancement ratio of lung parenchyma at TI ≥ 800 ms were statistically compared for oxygen-enhanced and non-oxygen-enhanced MR images with slice-selective or non-slice-selective IR pulses. Results. The SNRs of acquisitions with slice-selective IR pulses were significantly higher than those of non-sliceselective IR pulses (P < 0.05). At TI 800 ms, the ΔSI of lung parenchyma on IR-HASTE images with slice-selective inversion pulse type was significantly higher than on that with the non-slice-selective type (P < 0.05). Relative enhancement ratios of the slice-selective IR pulses were significantly lower than those of non-slice-selective IR pulses at TIs between 800 and 1400 ms (P < 0.05). Conclusion: Slice selectivity of inversion pulse type affects oxygen-enhanced MRI in vivo.
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U2 - 10.1007/s11604-010-0548-4
DO - 10.1007/s11604-010-0548-4
M3 - Article
C2 - 21607837
AN - SCOPUS:79959933178
SN - 1867-1071
VL - 29
SP - 244
EP - 250
JO - Japanese journal of radiology
JF - Japanese journal of radiology
IS - 4
ER -