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World J Gastroenterol. Apr 7, 2010; 16(13): 1598-1609
Published online Apr 7, 2010. doi: 10.3748/wjg.v16.i13.1598
Published online Apr 7, 2010. doi: 10.3748/wjg.v16.i13.1598
Study | Diseases | Comment |
Single-input, single compartment, CC model | ||
Scharf et al[48] | Preclinical study in pigs | Experimental model of normal liver in pigs. Only arterial input from hepatic artery taken into account. Such a model may lack physiological realism, especially when there is substantial vascular input contribution from the portal vein |
Single-input, dual-compartment, DP model | ||
Sahani et al[30] | HCC | Single input assumed because majority of vascular input to HCC is derived from hepatic artery. Dual-compartment model used to probe interstitial space and PS, which can be substantial in tumors. DP model implemented as standard on General Electric (GE) perfusion software 2.0 used for analysis |
Dual-input, single-compartment, CC model | ||
Materne et al[45-47] | Normal and cirrhotic livers | Assumption of single compartment based on understanding that the fenestra in the sinusoids of liver are extremely porous and allows free exchange of low-molecular-weight contrast tracers between the vascular and the sinusoidal interstitial space. To simplify calculations, assumption was made that there was instantaneous mixing of contrast medium from the dual input[6,7,27,45-47,49] within the single compartment. In this way, quantitative parameters such as arterial perfusion, portal venous perfusion, MTT and volume of distribution (Ve) could be derived. Cuenod et al[27,49] applied a deconvolution technique to fit these parameters, and variants of such a model were also used by Funabasam et al[50] and Miyazaki et al[51] |
Cuenod et al[27,49] | Metastatic disease | |
Dual-input, dual-compartment, DP model | ||
Koh et al[4,20] | Metastases, HCC and cirrhosis | The DP model applies a concentration gradient within the vascular space. Parameters derived include, arterial flow, portal venous flow, fractional arterial flow, permeability, fractional intravascular space, fractional interstitial space, MTT, contrast arrival time. A dual-input dual-compartment approximation of the DP model is used commercially (CT Perfusion 3.0; General Electric, Milwaukee, USA) and was also adopted by Chen et al[42,52,53] in perfusion studies of the liver |
- Citation: Thng CH, Koh TS, Collins DJ, Koh DM. Perfusion magnetic resonance imaging of the liver. World J Gastroenterol 2010; 16(13): 1598-1609
- URL: https://www.wjgnet.com/1007-9327/full/v16/i13/1598.htm
- DOI: https://dx.doi.org/10.3748/wjg.v16.i13.1598