Coil Sensitivity Estimation for Optimal SNR Reconstruction and Intensity Inhomogeneity Correction in Phased Array MR Imaging

2005 ◽  
pp. 603-614 ◽  
Author(s):  
Prashanthi Vemuri ◽  
Eugene G. Kholmovski ◽  
Dennis L. Parker ◽  
Brian E. Chapman
Keyword(s):  
Mr Imaging ◽  
Phased Array ◽  
Intensity Inhomogeneity ◽  
Coil Sensitivity ◽  
Inhomogeneity Correction ◽  
Sensitivity Estimation

Improved parallel MR imaging with accurate coil sensitivity estimation using iterative adaptive support

2019 ◽  
Vol 51 ◽  
pp. 73-81
Author(s):  
Jinhua Sheng ◽  
Bocheng Wang ◽  
Yangjie Ma ◽  
Qingqiang Liu ◽  
Weixiang Liu ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Coil Sensitivity ◽  
Sensitivity Estimation ◽  
Adaptive Support

Single-breath-hold venous or arterial flow-suppressed pulmonary vascular MR imaging with phased-array coils

1993 ◽  
Vol 3 (4) ◽  
pp. 611-616 ◽  
Author(s):  
Thomas K. F. Foo ◽  
James R. Macfall ◽  
H. Dirk Sostman ◽  
Cecil E. Hayes
Keyword(s):  
Mr Imaging ◽  
Phased Array ◽  
Arterial Flow ◽  
Breath Hold ◽  
Single Breath ◽  
Single Breath Hold ◽  
Phased Array Coils ◽  
Array Coils

Liver MRI segmentation with edge-preserved intensity inhomogeneity correction

2017 ◽  
Vol 12 (4) ◽  
pp. 791-798 ◽  
Author(s):  
Hui Liu ◽  
Pinpin Tang ◽  
Dongmei Guo ◽  
HaiXia Liu ◽  
Yuanjie Zheng ◽  
...  
Keyword(s):  
Intensity Inhomogeneity ◽  
Liver Mri ◽  
Mri Segmentation ◽  
Inhomogeneity Correction

High resolution MR imaging of the bilateral hips with dual phased-array coil

1996 ◽  
Vol 6 (6) ◽  
pp. 950-953 ◽  
Author(s):  
Mamoru Niitsu ◽  
Hajime Mishima ◽  
Shumpei Miyakawa ◽  
Yuji Itai
Keyword(s):  
High Resolution ◽  
Mr Imaging ◽  
Phased Array ◽  
Phased Array Coil ◽  
Array Coil

Pelvic phased-array MR imaging of anal carcinoma before and after chemoradiation

2008 ◽  
Vol 81 (962) ◽  
pp. 91-98 ◽  
Author(s):  
D M KOH ◽  
A DZIK-JURASZ ◽  
B O'NEILL ◽  
D TAIT ◽  
J E HUSBAND ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Phased Array ◽  
Anal Carcinoma ◽  
Before And After

Volume and surface coil simultaneous reception (VSSR) method for intensity inhomogeneity correction in MRI

2021 ◽  
pp. 1-12
Author(s):  
Lin Wu ◽  
Tian He ◽  
Jie Yu ◽  
Hang Liu ◽  
Shuang Zhang ◽  
...  
Keyword(s):  
Bias Field ◽  
Correction Method ◽  
Surface Coil ◽  
Intensity Inhomogeneity ◽  
Acquisition Time ◽  
Surface Coils ◽  
In Vivo Experiments ◽  
Inhomogeneity Correction ◽  
Volume Coil

BACKGROUND: Addressing intensity inhomogeneity is critical in magnetic resonance imaging (MRI) because associated errors can adversely affect post-processing and quantitative analysis of images (i.e., segmentation, registration, etc.), as well as the accuracy of clinical diagnosis. Although several prior methods have been proposed to eliminate or correct intensity inhomogeneity, some significant disadvantages have remained, including alteration of tissue contrast, poor reliability and robustness of algorithms, and prolonged acquisition time. OBJECTIVE: In this study, we propose an intensity inhomogeneity correction method based on volume and surface coils simultaneous reception (VSSR). METHODS: The VSSR method comprises of two major steps: 1) simultaneous image acquisition from both volume and surface coils and 2) denoising of volume coil images and polynomial surface fitting of bias field. Extensive in vivo experiments were performed considering various anatomical structures, acquisition sequences, imaging resolutions, and orientations. In terms of correction performance, the proposed VSSR method was comparatively evaluated against several popular methods, including multiplicative intrinsic component optimization and improved nonparametric nonuniform intensity normalization bias correction methods. RESULTS: Experimental results show that VSSR is more robust and reliable and does not require prolonged acquisition time with the volume coil. CONCLUSION: The VSSR may be considered suitable for general implementation.

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