Comparison of PET image quality using simultaneous PET/MR by attenuation correction with various MR pulse sequences
Positron emission tomography (PET)/magnetic resonance (MR) scanning has the advantage of less additional exposure to radiation than does PET/computed tomography (CT). In particular, MR based attenuation correction (MR AC) can greatly affect the image quality of PET and is frequently obtained using v...
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| Format: | Article |
| Language: | English |
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Elsevier
2019-09-01
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| Series: | Nuclear Engineering and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573319301317 |
| _version_ | 1818177062506070016 |
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| author | Chan Rok Park Youngjin Lee |
| author_facet | Chan Rok Park Youngjin Lee |
| author_sort | Chan Rok Park |
| collection | DOAJ |
| description | Positron emission tomography (PET)/magnetic resonance (MR) scanning has the advantage of less additional exposure to radiation than does PET/computed tomography (CT). In particular, MR based attenuation correction (MR AC) can greatly affect the image quality of PET and is frequently obtained using various MR sequences. Thus, the purpose of the current study was to quantitatively compare the image quality between MR non-AC (MR NAC) and MR AC in PET images with three MR sequences. Percent image uniformity (PIU), percent contrast recovery (PCR), and percent background variability (PBV) were estimated to evaluate the quality of PET images with MR AC. Based on the results of PIU, 15.2% increase in the average quality was observed for PET images with MR AC than for PET images with MR NAC. In addition, 28.6% and 71.1% improvement in the average results of PCR and PBV respectively, was observed for PET images with MR AC compared with that with MR NAC. Moreover, no significant difference was observed among the average values using three MR sequences. In conclusion, the current study demonstrated that PET with MR AC improved the image quality and can be help diagnosis in all MR sequence cases. Keywords: Simultaneous PET/MR scanner, Attenuation correction with MR sequences, Quantitative evaluation of image quality |
| first_indexed | 2024-12-11T20:26:07Z |
| format | Article |
| id | doaj.art-0e667d95312847e0a1447b2ff04db13d |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-12-11T20:26:07Z |
| publishDate | 2019-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-0e667d95312847e0a1447b2ff04db13d2022-12-22T00:51:56ZengElsevierNuclear Engineering and Technology1738-57332019-09-0151616101615Comparison of PET image quality using simultaneous PET/MR by attenuation correction with various MR pulse sequencesChan Rok Park0Youngjin Lee1Department of Nuclear Medicine, Seoul National University Hospital, 101, Daehak-Ro, Jongno-Gu, Seoul, Republic of KoreaDepartment of Radiological Science, Gachon University, 191, Hambakmoero, Yeonsu-gu, Incheon, Republic of Korea; Corresponding author.Positron emission tomography (PET)/magnetic resonance (MR) scanning has the advantage of less additional exposure to radiation than does PET/computed tomography (CT). In particular, MR based attenuation correction (MR AC) can greatly affect the image quality of PET and is frequently obtained using various MR sequences. Thus, the purpose of the current study was to quantitatively compare the image quality between MR non-AC (MR NAC) and MR AC in PET images with three MR sequences. Percent image uniformity (PIU), percent contrast recovery (PCR), and percent background variability (PBV) were estimated to evaluate the quality of PET images with MR AC. Based on the results of PIU, 15.2% increase in the average quality was observed for PET images with MR AC than for PET images with MR NAC. In addition, 28.6% and 71.1% improvement in the average results of PCR and PBV respectively, was observed for PET images with MR AC compared with that with MR NAC. Moreover, no significant difference was observed among the average values using three MR sequences. In conclusion, the current study demonstrated that PET with MR AC improved the image quality and can be help diagnosis in all MR sequence cases. Keywords: Simultaneous PET/MR scanner, Attenuation correction with MR sequences, Quantitative evaluation of image qualityhttp://www.sciencedirect.com/science/article/pii/S1738573319301317 |
| spellingShingle | Chan Rok Park Youngjin Lee Comparison of PET image quality using simultaneous PET/MR by attenuation correction with various MR pulse sequences Nuclear Engineering and Technology |
| title | Comparison of PET image quality using simultaneous PET/MR by attenuation correction with various MR pulse sequences |
| title_full | Comparison of PET image quality using simultaneous PET/MR by attenuation correction with various MR pulse sequences |
| title_fullStr | Comparison of PET image quality using simultaneous PET/MR by attenuation correction with various MR pulse sequences |
| title_full_unstemmed | Comparison of PET image quality using simultaneous PET/MR by attenuation correction with various MR pulse sequences |
| title_short | Comparison of PET image quality using simultaneous PET/MR by attenuation correction with various MR pulse sequences |
| title_sort | comparison of pet image quality using simultaneous pet mr by attenuation correction with various mr pulse sequences |
| url | http://www.sciencedirect.com/science/article/pii/S1738573319301317 |
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