Year : 2015 | Volume
: 1 | Issue : 1 | Page : 16--20
Extracting Breathing Signal Using Fourier Transform from Cine Magnetic Resonance Imaging
Jing Cai, Yilin Liu, Fangfang Yin
Department of Radiation Oncology, Duke University Medical Center; Medical Physics Graduate Program, Duke University, Durham, NC, USA
Aim: The objective of this study is to investigate the feasibility of extracting breathing signal from the cine magnetic resonance images (MRI) using Fourier transform (FT) and its application in four-dimensional-MRI.
Methods: A total of 10 subjects were imaged continuously during free breathing using a true fast imaging with steady-state precession MR sequence. Breathing signal of each subject was determined by two means: (1) by tracking the displacement of a region of interest (ROI) (ROI-displacement); and (2) by tracking the phase change of pixel (0, 1) in the FT of cine MRI (FT-phase). Respiratory phases were calculated from the breathing signal and compared between the two methods. To test the application of FT-phase method in four-dimensional-MRI, an in-house built MR-compatible motion phantom was imaged using multi-slice cine MRI. Four-dimensional-MRI were retrospectively reconstructed using the breathing signal determined using the FT-phase method.
Results: The mean difference in the respiratory phase between the two methods is −3.13 ± 4.85%, and the mean correlation coefficient is 0.97 ± 0.02. In the phantom study, four-dimensional-MRI clearly revealed sinusoidal motions of the object with minimal artifacts.
Conclusion: Our preliminary results demonstrated that breathing signal can be extracted using FT-phase method with highly accurate respiratory phase information, and can be used for four-dimensional-MRI reconstruction.
Dr. Jing Cai
Department of Radiation Oncology, Duke University Medical Center, Box 3295, Durham, NC 27710
|How to cite this article:|
Cai J, Liu Y, Yin F. Extracting Breathing Signal Using Fourier Transform from Cine Magnetic Resonance Imaging.Cancer Transl Med 2015;1:16-20
|How to cite this URL:|
Cai J, Liu Y, Yin F. Extracting Breathing Signal Using Fourier Transform from Cine Magnetic Resonance Imaging. Cancer Transl Med [serial online] 2015 [cited 2020 Aug 11 ];1:16-20
Available from: http://www.cancertm.com/article.asp?issn=2395-3977;year=2015;volume=1;issue=1;spage=16;epage=20;aulast=Cai;type=0