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나노입자 연구단
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Application of cardiac gating to improve the reproducibility of intravoxel incoherent motion measurements in the head and neck

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Title
Application of cardiac gating to improve the reproducibility of intravoxel incoherent motion measurements in the head and neck
Author(s)
Koung Mi Kang; Seung Hong Choi; Dong Eun Kim; Tae Jin Yun; Ji-hoon Kim; Chul-Ho Sohn; Sun-Won Park
Publication Date
2017-07
Journal
Magnetic Resonance in Medical Sciences, v.16, no.3, pp.190 - 202
Publisher
JPN SOC MAGNETIC RESONANCE IN MEDICINE
Abstract
Purpose: To prospectively evaluate whether cardiac gating can improve the reproducibility of intravoxel incoherent motion (IVIM) parameters in the head and neck, we performed IVIM diffusion-weighted imaging (DWI) using 4 b values (4b), 4 b values with cardiac gating (4b gating) and 17 b values (17b). Methods: We performed IVIM DWI twice per person on nine healthy volunteers using 4b, 4b gating and 17b and five patients with head and neck masses using 4b gating and 17b. The ADC, perfusion fraction (f), diffusion coefficient (D) and perfusion-related diffusion coefficient (D*) were calculated in the brain, masti-cator muscle, parotid gland, submandibular gland, tonsil and masses. Intraclass coefficient (ICC), Bland-Altman analysis (BAA) and coefficient of variation (CV) were used to assess short-term test-retest reproducibility. Kruskal-Wallis test and Mann-Whitney test were used to investigate whether 4b, 4b gating or 17b had significant influences on the parameters. Results: For normal tissues and masses, ICC was excellent for all maps except the D* map. All parameters showed the lowest CV in the 4b gating. BAA also revealed the narrowest 95% limits of agreement using 4b gating for all parameters. In the subgroup analysis, almost all parameters in brain, muscle, parotid gland and submandibular gland showed the best reproducibility using 4b gating. In the muscle, parotid gland and submandibular gland, the values of ADC, f and D were not significantly different between among the three methods. Conclusion: 4b gating was more reproducible with respect to measurements of IVIM parameters in comparison with 4b or 17b. © 2016 Japanese Society for Magnetic Resonance in Medicine. ©2016 Japanese Society for Magnetic Resonance in Medicine
URI
https://pr.ibs.re.kr/handle/8788114/4208
ISSN
1347-3182
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
Files in This Item:
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