Objection:The purpose of this study is preliminarily to discuss stomach perfusion imaging technique with Multi-slice CT and its clinical application value in stomach neoplasm.Methods:Fifteen patients with known stomac...Objection:The purpose of this study is preliminarily to discuss stomach perfusion imaging technique with Multi-slice CT and its clinical application value in stomach neoplasm.Methods:Fifteen patients with known stomach neoplasm performed perfusion imaging with 4 or 16 slice CT.Performing perfusion imaging in central slice of neoplasm,using CT cine scan,slice thick 10 mm/2i;with high pressure syringe,injecting quickly from right elbow-front vein,dosage 45-50 mL,injec-tion rate 3.5-4.0 mL/s,scanning delay time 5 s,scanning total time 45 s.We performed perfusion CT post-processing using pancreatic mode of perfusion CT software.Blood flow(BF),blood volume(BV),mean transit time(MTT),and permeability surface(PS) of gastric wall and tumor were computed for every case.Results:BF,BV,MTT and PS of gastric tumor were 116.68 ± 90.09 mL/(min·100 g),9.57 ± 8.12 mL/100 g,10.07 ± 7.74 s,20.78 ± 19.68 mL/(min·100g),respectively.The P values for each CT perfusion parameters between gastric tumor and normal gastric wall were 0.001,0.021,0.155 and 0.031,respectively.Conclusion:Perfusion CT can provide hemodynamics of gastric tumors and play a key role in the diagnosis of gastric tumors.It's clinical application prospect will be fully broad.展开更多
基金Supported by the Young Foundation of the Department of Education,Liaoning Province (No.2005120)
文摘Objection:The purpose of this study is preliminarily to discuss stomach perfusion imaging technique with Multi-slice CT and its clinical application value in stomach neoplasm.Methods:Fifteen patients with known stomach neoplasm performed perfusion imaging with 4 or 16 slice CT.Performing perfusion imaging in central slice of neoplasm,using CT cine scan,slice thick 10 mm/2i;with high pressure syringe,injecting quickly from right elbow-front vein,dosage 45-50 mL,injec-tion rate 3.5-4.0 mL/s,scanning delay time 5 s,scanning total time 45 s.We performed perfusion CT post-processing using pancreatic mode of perfusion CT software.Blood flow(BF),blood volume(BV),mean transit time(MTT),and permeability surface(PS) of gastric wall and tumor were computed for every case.Results:BF,BV,MTT and PS of gastric tumor were 116.68 ± 90.09 mL/(min·100 g),9.57 ± 8.12 mL/100 g,10.07 ± 7.74 s,20.78 ± 19.68 mL/(min·100g),respectively.The P values for each CT perfusion parameters between gastric tumor and normal gastric wall were 0.001,0.021,0.155 and 0.031,respectively.Conclusion:Perfusion CT can provide hemodynamics of gastric tumors and play a key role in the diagnosis of gastric tumors.It's clinical application prospect will be fully broad.
