中国医药
中國醫藥
중국의약
CHINA MEDICINE
2011年
9期
1135-1136
,共2页
李殊明%金科%陈桦%李晓明
李殊明%金科%陳樺%李曉明
리수명%금과%진화%리효명
鼻腔疾病%X线计算机%螺旋CT%低剂量%儿童
鼻腔疾病%X線計算機%螺鏇CT%低劑量%兒童
비강질병%X선계산궤%라선CT%저제량%인동
Nasal cavity disease%X-ray computed%Spiral CT%Low-dose%Children
目的 探讨儿童鼻腔疾病的不同剂量螺旋CT扫描技术及其临床应用价值.方法 对临床怀疑鼻腔疾病而行常规剂量(100mAs)CT检查的36例患儿,再行选定低剂量(50 mAs、30 mAs)对照CT扫描;统计各剂量组的权重CT剂量指数(CTDIw)和容积CT剂量指数(CTDIvol),并对每幅图像进行质量评价和定性诊断.结果 30 mAs和50 mAs低剂量组的CTDIw和CTDIvol均明显低于常规剂量(100 mAs)组[分别为(3.53±1.43)、(6.34±2.2)mGy比(112.76±1.64)mGy,(4.17±0.81)、(8.51±1.26)mGy比(16.83±2.72)mGy,P＜0.05或P＜0.01];50 mAs剂量组扫描图像质量以良为主(61.11%),且其疾病定性诊断与常规剂量组差异无统计学意义(P＞0.05);而30 mAs剂量组扫描图像质量和定性诊断与常规剂量组比较差异均有统计学意义(P＜0.05).结论 低剂量螺旋CT扫描儿童鼻腔疾病,完全能够代替常规剂量的螺旋CT扫描,且50 mAs低剂量即可满足临床诊断需要,并能有效降低患者的受辐射剂量.
目的 探討兒童鼻腔疾病的不同劑量螺鏇CT掃描技術及其臨床應用價值.方法 對臨床懷疑鼻腔疾病而行常規劑量(100mAs)CT檢查的36例患兒,再行選定低劑量(50 mAs、30 mAs)對照CT掃描;統計各劑量組的權重CT劑量指數(CTDIw)和容積CT劑量指數(CTDIvol),併對每幅圖像進行質量評價和定性診斷.結果 30 mAs和50 mAs低劑量組的CTDIw和CTDIvol均明顯低于常規劑量(100 mAs)組[分彆為(3.53±1.43)、(6.34±2.2)mGy比(112.76±1.64)mGy,(4.17±0.81)、(8.51±1.26)mGy比(16.83±2.72)mGy,P＜0.05或P＜0.01];50 mAs劑量組掃描圖像質量以良為主(61.11%),且其疾病定性診斷與常規劑量組差異無統計學意義(P＞0.05);而30 mAs劑量組掃描圖像質量和定性診斷與常規劑量組比較差異均有統計學意義(P＜0.05).結論 低劑量螺鏇CT掃描兒童鼻腔疾病,完全能夠代替常規劑量的螺鏇CT掃描,且50 mAs低劑量即可滿足臨床診斷需要,併能有效降低患者的受輻射劑量.
목적 탐토인동비강질병적불동제량라선CT소묘기술급기림상응용개치.방법 대림상부의비강질병이행상규제량(100mAs)CT검사적36례환인,재행선정저제량(50 mAs、30 mAs)대조CT소묘;통계각제량조적권중CT제량지수(CTDIw)화용적CT제량지수(CTDIvol),병대매폭도상진행질량평개화정성진단.결과 30 mAs화50 mAs저제량조적CTDIw화CTDIvol균명현저우상규제량(100 mAs)조[분별위(3.53±1.43)、(6.34±2.2)mGy비(112.76±1.64)mGy,(4.17±0.81)、(8.51±1.26)mGy비(16.83±2.72)mGy,P＜0.05혹P＜0.01];50 mAs제량조소묘도상질량이량위주(61.11%),차기질병정성진단여상규제량조차이무통계학의의(P＞0.05);이30 mAs제량조소묘도상질량화정성진단여상규제량조비교차이균유통계학의의(P＜0.05).결론 저제량라선CT소묘인동비강질병,완전능구대체상규제량적라선CT소묘,차50 mAs저제량즉가만족림상진단수요,병능유효강저환자적수복사제량.
Objective To discuss the value of different dose spiral CT scan technique in children nasal disease. Methods Thirty-six children suspected nasal cavity disease were inspected by conventional-dose(100 mAs)CT and compared with the groups scanned with low-dose(50 mAs, 30 mAs). The weight of CT dose index(CTDIw)and volume CT dose(CTDIvol) of differ-dose group were counted. The quality of all images were evaluated. Results The CTDIw and CTDIvol of every low-dose group were lower than those of rule-dose group [(3.53 ± 1.43) mGy vs (6.34 ±2.2)mGy vs (112.76 ±1.64)mGy, (4.17 ±0.81)mGy vs (8.51 ±1.26)mGy vs (16.83 ±2.72)mGy,P ＜ 0.05 or P ＜ 0.01]. The imaging quality of 50 mAs dose group was good (61.11%). There was no significant difference in disease's diagnosis between the 50 mA dose group and rule-dose group(P ＞0.05). The quality of the images of 30 mas dose group had significant difference (P ＜ 0.05) compared with that in the conventional-dose group. Conclusions The low-dose scanning can replace the rule-dose in children's nasal disease. The 50 mAs dose can reduce the radiation dose in patient's body.
