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Paper Information

Journal:   JOURNAL OF BIOMEDICAL PHYSICS AND ENGINEERING   2018 , Volume 8 , Number 1; Page(s) 53 To 64.
 
Paper: 

NEW PSEUDO-CT GENERATION APPROACH FROM MAGNETIC RESONANCE IMAGING USING A LOCAL TEXTURE DESCRIPTOR

 
 
Author(s):  CHAIBI H.*, NOURINE R.
 
* LAB. LITIO, UNIVERSITY OF ORAN, AHMED BEN BELLA- ALGERIA
 
Abstract: 

Background: One of the challenges of PET/MRI combined systems is to derive an attenuation map to correct the PET image. For that, the pseudo-CT image could be used to correct the attenuation. Until now, most existing scientific researches construct this pseudo-CT image using the registration techniques. However, these techniques suffer from the local minima of the non-rigid deformation energy function which leads to unsatisfactory results.
Objective: We propose in this paper a new approach for the generation of a pseudo-CT image from an MR image.
Materials and Methods: This approach is based on a dense stereo matching concept, for that, we encode each pixel according to a shape related coordinates method, and we apply a local texture descriptor to put into correspondence pixels between MRI patient and MRI atlas images. The proposed approach was tested on a real MRI data, and in order to show the effectiveness of the proposed local descriptor, it has been compared to three other local descriptors: SIFT, SURF and DAISY. Also it was compared to registration method.
Results: The calculation of structural similarity (SSIM) index and DICE coefficients, between the pseudo-CT image and the corresponding real CT image show that the proposed stereo matching approach outperforms a registration one.
Conclusion: The use of dense matching with atlas promises good results in the creation of pseudo-CT. The proposed approach can be recommended as an alternative to registration techniques.

 
Keyword(s): PSEUDO-CT, ATTENUATION CORRECTION, STEREO MATCHING, LOCAL TEXTURE DESCRIPTOR FOR MATCHING, PET/MRI
 
 
References: 
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Click to Cite.
APA: Copy

CHAIBI, H., & NOURINE, R. (2018). NEW PSEUDO-CT GENERATION APPROACH FROM MAGNETIC RESONANCE IMAGING USING A LOCAL TEXTURE DESCRIPTOR. JOURNAL OF BIOMEDICAL PHYSICS AND ENGINEERING, 8(1), 53-64. https://www.sid.ir/en/journal/ViewPaper.aspx?id=570577



Vancouver: Copy

CHAIBI H., NOURINE R.. NEW PSEUDO-CT GENERATION APPROACH FROM MAGNETIC RESONANCE IMAGING USING A LOCAL TEXTURE DESCRIPTOR. JOURNAL OF BIOMEDICAL PHYSICS AND ENGINEERING. 2018 [cited 2021May11];8(1):53-64. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=570577



IEEE: Copy

CHAIBI, H., NOURINE, R., 2018. NEW PSEUDO-CT GENERATION APPROACH FROM MAGNETIC RESONANCE IMAGING USING A LOCAL TEXTURE DESCRIPTOR. JOURNAL OF BIOMEDICAL PHYSICS AND ENGINEERING, [online] 8(1), pp.53-64. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=570577.



 
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