Assessment of Hemodynamics in a Rat Model of Liver Cirrhosis with Precancerous Lesions Using Multislice Spiral CT Perfusion Imaging

Table 1

Combinations of imaging conditions.

Injection time (s)	Concentration (%)	Injection rate (mL/s)	Effects and analysis of perfusion imaging	Methods to improve image quality
1	19–76	0.3–0.5	Low concentration, short duration, and no pseudo-color map	Extend the injection time
1	76	0.5	High concentration, slow injection rate, and no pseudo-color map	Unfeasible method
2~3	76	0.3	Short duration and no pseudo-color map	Extend the injection time
2~3	19–57	0.3–0.5	Low concentration, short duration, and no pseudo-color map	Extend the injection time
2~3	76	0.5	High concentration, slow injection, and no pseudo-color map	Unfeasible method
4~5	76	0.3	Short duration and no pseudo-color map	Extend the injection time
4~5	19–38	0.3–0.5	Low concentration, short duration, and no pseudo-color map	Extend the injection time
4~5	57	0.5	Poor quality of pseudo-color map	Extend the injection time
4~5	76	0.5	High concentration, slow injection, and no pseudo-color map	Unfeasible method
6	76	0.3	Poor quality of pseudo-color map	Decrease concentration
6	19–38	0.3–0.5	Low concentration and no pseudo-color map	Increase concentration
6	57	0.5	Good pseudo-color map	Feasible method
6	76	0.5	High concentration, slow injection, and no pseudo-color map	Unfeasible method

Bold: the optimal imaging protocol we used in this study.