TY - GEN
T1 - T2 weighted liver Magnetic Resonance imaging using functional residual capacity breath-hold with multi breath-hold
AU - Tabuchi, Akihiko
AU - Katsuda, T.
AU - Gotanda, R.
AU - Gotanda, T.
AU - Yamamoto, K.
AU - Mitani, M.
AU - Takeda, Y.
PY - 2008
Y1 - 2008
N2 - Purpose: During acquisition of rapid high resolution (HR) T2 weighted (T2W) liver magnetic resonance (MR) images using a 1.0-Tesla (T) scanner, the liver is segmented into odd and even sections that are acquired at two different times using the multi-breath-hold (MBH) strategy. Misalignment between the two breath-hold (B-H) images may result in the occurrence of a blind area and a decrease in diagnostic accuracy. Here, a functional residual capacity (FRC) B-H method was developed to overcome this problem. Material and methods: Twenty-five volunteers were enrolled. The sagittal images were reconstructed from whole liver transverse images. The misalignments of the abdominal wall were measured in the anterior-posterior (AP) direction and were compared between each two B-H phases, maximum inspiration, maximum expiration, voluntary expiration and FRC using one-way repeated measures ANOVA. Differences between groups were compared using the t-test for multi-group comparisons. In addition, qualitative analysis of misalignment was performed between VE and FRC in 52 clinical patients and the χ 2 test was performed. Results: Misalignment of the liver position using FRC was significantly smaller than the other B-H methods (p < 0.05). Significant differences between the VE B-H and FRC B-H were also observed in the qualitative analysis (p < 0.05).
AB - Purpose: During acquisition of rapid high resolution (HR) T2 weighted (T2W) liver magnetic resonance (MR) images using a 1.0-Tesla (T) scanner, the liver is segmented into odd and even sections that are acquired at two different times using the multi-breath-hold (MBH) strategy. Misalignment between the two breath-hold (B-H) images may result in the occurrence of a blind area and a decrease in diagnostic accuracy. Here, a functional residual capacity (FRC) B-H method was developed to overcome this problem. Material and methods: Twenty-five volunteers were enrolled. The sagittal images were reconstructed from whole liver transverse images. The misalignments of the abdominal wall were measured in the anterior-posterior (AP) direction and were compared between each two B-H phases, maximum inspiration, maximum expiration, voluntary expiration and FRC using one-way repeated measures ANOVA. Differences between groups were compared using the t-test for multi-group comparisons. In addition, qualitative analysis of misalignment was performed between VE and FRC in 52 clinical patients and the χ 2 test was performed. Results: Misalignment of the liver position using FRC was significantly smaller than the other B-H methods (p < 0.05). Significant differences between the VE B-H and FRC B-H were also observed in the qualitative analysis (p < 0.05).
KW - Capacity (FRC)
KW - Functional Residual
KW - High-resolution
KW - Reproducibility
KW - T2 weighted MR imaging
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U2 - 10.1007/978-3-540-89208-3_380
DO - 10.1007/978-3-540-89208-3_380
M3 - Conference contribution
AN - SCOPUS:70350633088
SN - 9783540892076
T3 - IFMBE Proceedings
SP - 1598
EP - 1602
BT - 4th European Conference of the International Federation for Medical and Biological Engineering - ECIFMBE 2008
T2 - 4th European Conference of the International Federation for Medical and Biological Engineering, ECIFMBE 2008
Y2 - 23 November 2008 through 27 November 2008
ER -