Application of multislice spiral CT perfusion imaging in tumor diagnosisg and treatment

Objective:To discuss the technique and clinical significance of Multislice spiral computed tomography(MSCT) tumor perfusion imaging.Method:Eleven tumor patients were examined by MSCT perfusion imaging.The tumor centers were ascertained by routine CT firstly followed by perfusion scanning.Tumor centers were scanned by film scanning technique(1 r/0.75s).Every slice was 0.6 mm and 50ml contrast material was injected at a flow rate of 5 ml/s.The contrast material injecting and CT scanning were done simultaneously.Total scan time was 40 secs.Images analysis and perfusion parameter were processed and calculated by workstation,including the volume of arterial perfusion(AP or Art.Perf.),vein perfusion(PP or Port Perf.),total perfusion(TP or Total Perf.) and hepatic perfusion index(HPI).Results:All tumors' size and outline were showed clearly and perfusion parameter increased greatly.Perfusion state in the inside of tumor could be quantified detected.The images were limpid with high resolution ratio.Conclusion:MSCT perfusion imaging is an accurate,quick and simple method to quantified estimate bloodstream perfusion state of tumors.