中国CT和MRI杂志
中國CT和MRI雜誌
중국CT화MRI잡지
CHINESE JOURNAL OF CT AND MRI
2015年
6期
65-67
,共3页
低剂量%CT扫描%常规剂量%泌尿系结石
低劑量%CT掃描%常規劑量%泌尿繫結石
저제량%CT소묘%상규제량%비뇨계결석
Low Dose%CT Scan%Regular Doses%Urinary Calculi
目的：探讨不同剂量CT扫描应用于泌尿结石临床诊断价值。方法按照入院挂号时间顺序将200例拟诊泌尿系结石患者分为对照组与观察组，各100例。对照组采用常规剂量CT扫描检查(120KV、150mA)；观察组根据患者体重指数不同分别采用(100mA、80mA、50mA)低剂量CT扫描。比较2组患者图像质量评分(IQS)和容积CT剂量指数(CTDIvol)、扫描敏感性、特异性、阳性预测值、阴性预测值。结果经研究发现，观察组CTDIvol为(6.5±1.1)与对照组(19.7±1.4)比较，具有统计学意义(P<0.05)；但2组扫描敏感性、特异性、阳性预测值、阴性预测值、IQS比较，无统计学意义(P>0.05)。结论相比常规剂量CT扫描来说，临床根据患者体重指数采用低剂量CT扫描，其图像质量、特异性、阳性预测值与其相当。但低剂量CT扫描过程中所产生辐射剂量要少，因此对患者造成伤害少，更值得进行推广应用。
目的：探討不同劑量CT掃描應用于泌尿結石臨床診斷價值。方法按照入院掛號時間順序將200例擬診泌尿繫結石患者分為對照組與觀察組，各100例。對照組採用常規劑量CT掃描檢查(120KV、150mA)；觀察組根據患者體重指數不同分彆採用(100mA、80mA、50mA)低劑量CT掃描。比較2組患者圖像質量評分(IQS)和容積CT劑量指數(CTDIvol)、掃描敏感性、特異性、暘性預測值、陰性預測值。結果經研究髮現，觀察組CTDIvol為(6.5±1.1)與對照組(19.7±1.4)比較，具有統計學意義(P<0.05)；但2組掃描敏感性、特異性、暘性預測值、陰性預測值、IQS比較，無統計學意義(P>0.05)。結論相比常規劑量CT掃描來說，臨床根據患者體重指數採用低劑量CT掃描，其圖像質量、特異性、暘性預測值與其相噹。但低劑量CT掃描過程中所產生輻射劑量要少，因此對患者造成傷害少，更值得進行推廣應用。
목적：탐토불동제량CT소묘응용우비뇨결석림상진단개치。방법안조입원괘호시간순서장200례의진비뇨계결석환자분위대조조여관찰조，각100례。대조조채용상규제량CT소묘검사(120KV、150mA)；관찰조근거환자체중지수불동분별채용(100mA、80mA、50mA)저제량CT소묘。비교2조환자도상질량평분(IQS)화용적CT제량지수(CTDIvol)、소묘민감성、특이성、양성예측치、음성예측치。결과경연구발현，관찰조CTDIvol위(6.5±1.1)여대조조(19.7±1.4)비교，구유통계학의의(P<0.05)；단2조소묘민감성、특이성、양성예측치、음성예측치、IQS비교，무통계학의의(P>0.05)。결론상비상규제량CT소묘래설，림상근거환자체중지수채용저제량CT소묘，기도상질량、특이성、양성예측치여기상당。단저제량CT소묘과정중소산생복사제량요소，인차대환자조성상해소，경치득진행추엄응용。
Objective Discusses the application of different dose of CT scan in the clinical diagnostic value of urinary calculi.Methods In chronological order according to admission registered 200 cases of suspected urinary calculi were divided into a control group and the observation group, the 100 cases respectively. Control group with conventional-dose CT scan (120KV, 150mA); Observe the different groups were used (100mA, 80mA, 50mA) low-dose CT scans based on patient body mass index. Comparison of the two groups were image quality score (IQS) and volume CT dose index (CTDIvol), scanning sensitivity, specificity, positive predictive value, negative predictive value.Results The study found that the observation group CTDIvol was (6.5±1.1) and the control group (19.7±1.4) compared with statistical significance (P <0.05); but the two groups scanning sensitivity, specificity, positive predictive value, negative predictive value , IQS comparison, no significant difference (P>0.05).Conclusion Compared with conventional dose CT scan, according to body mass index (bmi) in patients with clinical use of low-dose CT scan, the images quality, specificity, positive predictive value and its quite. But low dose CT scanning process produced less radiation dose, therefore cause harm to patients, more worthy of popularization and application.
