DocumentCode :
686949
Title :
1-D interpolation method for the HRRT PET sinogram gap-filling
Author :
Peltonen, Sari ; Tuna, U. ; Ruotsalainen, U.
Author_Institution :
Dept. of Signal Process., Tampere Univ. of Technol., Tampere, Finland
fYear :
2013
fDate :
Oct. 27 2013-Nov. 2 2013
Firstpage :
1
Lastpage :
4
Abstract :
The ECAT High Resolution Research Tomograph (HRRT) (CTI PET Systems, Knoxville, TN, USA) is a positron emission tomography (PET) scanner producing PET sinogram data with gaps. These gaps are areas of nonexisting sinogram data formed due to the physical limitations of the HRRT scanner detector block configuration. We present a simple non-interative and fast 1-D cubic convolution based interpolation scheme to fill the gaps of the data. The scheme is based on the idea of shrinking and resizing of previously introduced gap-filling by using the slices in the direction of the radial samples. This method shrinks the data by taking the gaps away, resizes it by bicubic interpolation back to the original size and fills the gaps by the resized data. The new scheme is a symmetric version of it using 1-D cubic interpolation in the resizing. The results obtained by the proposed method are shown to be comparable to those of the current state of the art methods.
Keywords :
image segmentation; interpolation; medical image processing; positron emission tomography; 1D interpolation method; ECAT High Resolution Research Tomograph; HRRT PET sinogram gap-filling; HRRT scanner detector block configuration; PET sinogram data; fast 1D cubic convolution; positron emission tomography scanner; simple noninterative cubic convolution; Biomedical imaging; Discrete cosine transforms; Image reconstruction; Image segmentation; Interpolation; PSNR; Positron emission tomography;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE
Conference_Location :
Seoul
Print_ISBN :
978-1-4799-0533-1
Type :
conf
DOI :
10.1109/NSSMIC.2013.6829385
Filename :
6829385
Link To Document :
بازگشت