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©The Author(s) 2023.
World J Gastroenterol. Jan 21, 2023; 29(3): 521-535
Published online Jan 21, 2023. doi: 10.3748/wjg.v29.i3.521
Published online Jan 21, 2023. doi: 10.3748/wjg.v29.i3.521
Table 1 Main quantitative parameters extracted from perfusion computed tomography and magnetic resonance imaging imaging techniques to predict treatment response in patients with colorectal liver metastasis
| Parameter name | Parameter definition | Parameter significance |
| Transfer constant (Ktrans) | Rate of contrast extraction from the blood to the interstitium | It reflects the balance between capillary permeability and BF in a tissue |
| Tissue interstitial volume (Ve) | Volume of extravascular and extracellular contrast agent in a certain tissue, expressed as a percentage | It is a measure of cell density |
| Rate contrast (Kep) | Rate at which the contrast agent returns from the extravascular-extracellular space to the vascular compartment (Kep = Ktrans/Ve) | It reflects the tissue microcirculation and contrast agent permeability |
| Regional BF | BF per unit volume or mass of tissue (mL of blood/min/100 mL of tissue) | It expresses the rate of the delivery of nutrients and oxygen to a certain tissue |
- Citation: Caruso M, Stanzione A, Prinster A, Pizzuti LM, Brunetti A, Maurea S, Mainenti PP. Role of advanced imaging techniques in the evaluation of oncological therapies in patients with colorectal liver metastases. World J Gastroenterol 2023; 29(3): 521-535
- URL: https://www.wjgnet.com/1007-9327/full/v29/i3/521.htm
- DOI: https://dx.doi.org/10.3748/wjg.v29.i3.521