Accelerated T2* Measurements in Human Meniscus Using Projection Reconstruction with Data Sharing From Adjacent Echo

貢獻的翻譯標題: 人體半月軟骨板 T2*量測之加速: 利用鄰近回訊的資料分享之投影重建

Ping-Huei Tsai, Hsiao Wen Chung, Teng Yi Huang, Wing P. Chan, Cheng-Yu Chen, Fong Y. Tsai

研究成果: 會議貢獻類型論文

摘要

PURPOSE: We aim to take advantage of the projection reconstruction with data sharing from adjacent echo images for
acceleration of quantitative T2* measurements.
MATERIAL AND METHODS: In projection reconstruction imaging, MR data are acquired radially to fill the k-space with
a densely sampled center region, implying the ability of reconstructing multiple T2 weighted images as well as a T2
map from a single image data set. We extended the similar concept conjugated with the dual echo radial meniscus
imaging sequence to speed up the T2* measurements. The proposed imaging method was performed on 3T MRI with
8 different TEs=0.82/2/3/4/6.95/8.13/9.13/10.13 ms, flip angle = 600, TR = 700ms, number of slice = 8, slice
thickness = 5mm, projection number = 512, readout per projection = 512, in-plane resolution = 0.24×0.24 mm2,
acquisition time per repeat = 5 min 58 sec. After that, 2- and 4-fold undersampled radial k-space data was extracted
from this integral data set to test the acceleration ability of the contrast manipulation in our radial meniscus imaging.
RESULTS: Significant improvement of image quality was achieved in the images reconstructed using the proposed
method. Moreover, average T2* fittings from these three different projection data sets were derived, respectively. The
derived T2* values were increased from 5.7578 ms to 5.8464 (1.5% error) with two-fold acceleration, and 6.3284 ms
(9.9% error) with four-fold acceleration, respectively.
CONCLUSION: Our preliminary finding demonstrated that the proposed method provides an alternative to obtain
multiple T2* weighted images and a reliable T2* measurement with a shorter acquisition time, which may be helpful
in the implementation of in vivo meniscus T2* mapping in clinical application.
原文英語
出版狀態已發佈 - 三月 2014
事件The 63rd Annual Meeting of RSROC - Chung Shan Medical University, Taichung, 臺灣
持續時間: 三月 22 2014三月 23 2014
https://www.rsroc.org.tw/annual/annualnews_detail.asp?id=64

會議

會議The 63rd Annual Meeting of RSROC
國家臺灣
城市Taichung
期間3/22/143/23/14
網際網路位址

指紋

Information Dissemination
Quality Improvement
Datasets
Meniscus

引用此文

Tsai, P-H., Chung, H. W., Huang, T. Y., Chan, W. P., Chen, C-Y., & Tsai, F. Y. (2014). Accelerated T2* Measurements in Human Meniscus Using Projection Reconstruction with Data Sharing From Adjacent Echo. 論文發表於 The 63rd Annual Meeting of RSROC, Taichung, 臺灣.

Accelerated T2* Measurements in Human Meniscus Using Projection Reconstruction with Data Sharing From Adjacent Echo. / Tsai, Ping-Huei; Chung, Hsiao Wen; Huang, Teng Yi; Chan, Wing P.; Chen, Cheng-Yu; Tsai, Fong Y.

2014. 論文發表於 The 63rd Annual Meeting of RSROC, Taichung, 臺灣.

研究成果: 會議貢獻類型論文

Tsai, P-H, Chung, HW, Huang, TY, Chan, WP, Chen, C-Y & Tsai, FY 2014, 'Accelerated T2* Measurements in Human Meniscus Using Projection Reconstruction with Data Sharing From Adjacent Echo' 論文發表於 The 63rd Annual Meeting of RSROC, Taichung, 臺灣, 3/22/14 - 3/23/14, .
Tsai P-H, Chung HW, Huang TY, Chan WP, Chen C-Y, Tsai FY. Accelerated T2* Measurements in Human Meniscus Using Projection Reconstruction with Data Sharing From Adjacent Echo. 2014. 論文發表於 The 63rd Annual Meeting of RSROC, Taichung, 臺灣.
Tsai, Ping-Huei ; Chung, Hsiao Wen ; Huang, Teng Yi ; Chan, Wing P. ; Chen, Cheng-Yu ; Tsai, Fong Y. / Accelerated T2* Measurements in Human Meniscus Using Projection Reconstruction with Data Sharing From Adjacent Echo. 論文發表於 The 63rd Annual Meeting of RSROC, Taichung, 臺灣.
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title = "Accelerated T2* Measurements in Human Meniscus Using Projection Reconstruction with Data Sharing From Adjacent Echo",
abstract = "PURPOSE: We aim to take advantage of the projection reconstruction with data sharing from adjacent echo images foracceleration of quantitative T2* measurements.MATERIAL AND METHODS: In projection reconstruction imaging, MR data are acquired radially to fill the k-space witha densely sampled center region, implying the ability of reconstructing multiple T2 weighted images as well as a T2map from a single image data set. We extended the similar concept conjugated with the dual echo radial meniscusimaging sequence to speed up the T2* measurements. The proposed imaging method was performed on 3T MRI with8 different TEs=0.82/2/3/4/6.95/8.13/9.13/10.13 ms, flip angle = 600, TR = 700ms, number of slice = 8, slicethickness = 5mm, projection number = 512, readout per projection = 512, in-plane resolution = 0.24×0.24 mm2,acquisition time per repeat = 5 min 58 sec. After that, 2- and 4-fold undersampled radial k-space data was extractedfrom this integral data set to test the acceleration ability of the contrast manipulation in our radial meniscus imaging.RESULTS: Significant improvement of image quality was achieved in the images reconstructed using the proposedmethod. Moreover, average T2* fittings from these three different projection data sets were derived, respectively. Thederived T2* values were increased from 5.7578 ms to 5.8464 (1.5{\%} error) with two-fold acceleration, and 6.3284 ms(9.9{\%} error) with four-fold acceleration, respectively.CONCLUSION: Our preliminary finding demonstrated that the proposed method provides an alternative to obtainmultiple T2* weighted images and a reliable T2* measurement with a shorter acquisition time, which may be helpfulin the implementation of in vivo meniscus T2* mapping in clinical application.",
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AU - Chen, Cheng-Yu

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N2 - PURPOSE: We aim to take advantage of the projection reconstruction with data sharing from adjacent echo images foracceleration of quantitative T2* measurements.MATERIAL AND METHODS: In projection reconstruction imaging, MR data are acquired radially to fill the k-space witha densely sampled center region, implying the ability of reconstructing multiple T2 weighted images as well as a T2map from a single image data set. We extended the similar concept conjugated with the dual echo radial meniscusimaging sequence to speed up the T2* measurements. The proposed imaging method was performed on 3T MRI with8 different TEs=0.82/2/3/4/6.95/8.13/9.13/10.13 ms, flip angle = 600, TR = 700ms, number of slice = 8, slicethickness = 5mm, projection number = 512, readout per projection = 512, in-plane resolution = 0.24×0.24 mm2,acquisition time per repeat = 5 min 58 sec. After that, 2- and 4-fold undersampled radial k-space data was extractedfrom this integral data set to test the acceleration ability of the contrast manipulation in our radial meniscus imaging.RESULTS: Significant improvement of image quality was achieved in the images reconstructed using the proposedmethod. Moreover, average T2* fittings from these three different projection data sets were derived, respectively. Thederived T2* values were increased from 5.7578 ms to 5.8464 (1.5% error) with two-fold acceleration, and 6.3284 ms(9.9% error) with four-fold acceleration, respectively.CONCLUSION: Our preliminary finding demonstrated that the proposed method provides an alternative to obtainmultiple T2* weighted images and a reliable T2* measurement with a shorter acquisition time, which may be helpfulin the implementation of in vivo meniscus T2* mapping in clinical application.

AB - PURPOSE: We aim to take advantage of the projection reconstruction with data sharing from adjacent echo images foracceleration of quantitative T2* measurements.MATERIAL AND METHODS: In projection reconstruction imaging, MR data are acquired radially to fill the k-space witha densely sampled center region, implying the ability of reconstructing multiple T2 weighted images as well as a T2map from a single image data set. We extended the similar concept conjugated with the dual echo radial meniscusimaging sequence to speed up the T2* measurements. The proposed imaging method was performed on 3T MRI with8 different TEs=0.82/2/3/4/6.95/8.13/9.13/10.13 ms, flip angle = 600, TR = 700ms, number of slice = 8, slicethickness = 5mm, projection number = 512, readout per projection = 512, in-plane resolution = 0.24×0.24 mm2,acquisition time per repeat = 5 min 58 sec. After that, 2- and 4-fold undersampled radial k-space data was extractedfrom this integral data set to test the acceleration ability of the contrast manipulation in our radial meniscus imaging.RESULTS: Significant improvement of image quality was achieved in the images reconstructed using the proposedmethod. Moreover, average T2* fittings from these three different projection data sets were derived, respectively. Thederived T2* values were increased from 5.7578 ms to 5.8464 (1.5% error) with two-fold acceleration, and 6.3284 ms(9.9% error) with four-fold acceleration, respectively.CONCLUSION: Our preliminary finding demonstrated that the proposed method provides an alternative to obtainmultiple T2* weighted images and a reliable T2* measurement with a shorter acquisition time, which may be helpfulin the implementation of in vivo meniscus T2* mapping in clinical application.

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