CAJ | 학술논문

目的：研究单源单能量CT双能量成像法检测体外泌尿系结石成分的可行性。方法使用单源单能量64排CT分别采集36例尿路结石样本在80KVp及140KVp图像，并分别测量结石样本CT值，根据公式计算出DEI（dual energy index,DEI）。结果纯尿酸结石DEI=（0.01230±0.00412），混合尿酸结石DEI=（0.03613±0.01255），含钙结石DEI=（0.09901±0.01553），鸟粪石DEI=（0.06176±0.00650），胱氨酸结石DEI=（0.05825±0.00774）。纯尿酸结石和非纯尿酸结石之间DEI值有统计学差异（P<0.05）；纯尿酸、混合尿酸、含钙结石之间DEI均有统计学差异（P<0.05）；鸟粪石、胱氨酸结石之间和它们与混合尿酸、含钙结石之间DEI没有统计学差异。结论单源单能量CT双能量成像法是一种方便、快捷的方法，可在没有双源双能量CT及能谱CT的情况下明确泌尿系结石的成分，对临床上进一步的诊断及治疗方案的选择是非常有价值的。
목적：연구단원단능량CT쌍능량성상법검측체외비뇨계결석성분적가행성。방법사용단원단능량64배CT분별채집36례뇨로결석양본재80KVp급140KVp도상，병분별측량결석양본CT치，근거공식계산출DEI（dual energy index,DEI）。결과순뇨산결석DEI=（0.01230±0.00412），혼합뇨산결석DEI=（0.03613±0.01255），함개결석DEI=（0.09901±0.01553），조분석DEI=（0.06176±0.00650），광안산결석DEI=（0.05825±0.00774）。순뇨산결석화비순뇨산결석지간DEI치유통계학차이（P<0.05）；순뇨산、혼합뇨산、함개결석지간DEI균유통계학차이（P<0.05）；조분석、광안산결석지간화타문여혼합뇨산、함개결석지간DEI몰유통계학차이。결론단원단능량CT쌍능량성상법시일충방편、쾌첩적방법，가재몰유쌍원쌍능량CT급능보CT적정황하명학비뇨계결석적성분，대림상상진일보적진단급치료방안적선택시비상유개치적。
Objective To study the feasibility of single-source single-energy CT dual energy imagine for stone composition in vitro.Methods Using single-source single-energy 64 CT, imagines of 36 stones were collected by 80KVP and 140 KVP respectively, and CT values were measured. Then DEI values were calculated according to the certain formula.Results The DEI values were (0.01230±0.00412) (UA), (0.03613±0.01255) (mixed UA), (0.09901±0.01553) (calcified stones), (0.06176±0.00650) (struvite stones), (0.05825±0.00774) (cysteine stones). The DEI values between UA-containing and no UA-containing were statistically significant (P<0.05), the DEI values were statistically significant among UA, mixed UA and calcified stones (P<0.05); there were no statistically significant among struvite , cysteine , mixed UA and calcified stones.Conclusion Single-source single-energy CT dual-energy imaging method for stone composition is convenient, rapid and non-invasive . It can provide valuable information for clinical diagnosis and treatment design.