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- Title
Underestimation of the spleen perfusion fraction by intravoxel incoherent motion MRI.
- Authors
Yu, Wei‐Ling; Xiao, Ben‐Heng; Ma, Fu‐Zhao; Zheng, Cun‐Jing; Tang, Sheng‐Nan; Wáng, Yì Xiáng J.
- Abstract
Keywords: intravoxel incoherent motion; liver; perfusion; spleen EN intravoxel incoherent motion liver perfusion spleen 1 4 4 09/15/23 20231001 NES 231001 Abbreviations DDVD diffusion-derived vessel density D fast intravoxel incoherent motion parameter of perfusion-related diffusion D slow intravoxel incoherent motion parameter of tissue "true" diffusion IVIM intravoxel incoherent motion PF intravoxel incoherent motion parameter of perfusion fraction SSE sum of squared estimate of errors Intravoxel incoherent motion (IVIM) theory in MRI was proposed by Le Bihan et al. to account for the effect of vessel/capillary perfusion on the aggregate diffusion-weighted MR signal. However, this could be associated with the fact that the spleen may be waterier than the liver, considering the longer I T i SB 1 sb and I T i SB 2 sb relaxation times of the spleen. Flow: input blood flow of liver from hepatic artery and portal vein and input blood flow of spleen from splenic artery. Observed paradoxical perfusion fraction elevation in steatotic liver: an example of intravoxel incoherent motion modeling of the perfusion component constrained by the diffusion component.
- Subjects
SPLEEN; PERFUSION; MAGNETIC resonance imaging
- Publication
NMR in Biomedicine, 2023, Vol 36, Issue 10, p1
- ISSN
0952-3480
- Publication type
Article
- DOI
10.1002/nbm.4987