CAJ | 학술논문

目的：探讨Flash CT在阻塞性睡眠呼吸暂停综合征（OSAS）诊断中的应用价值。方法 A组：11例OSAS患者在睡眠前、后分别进行大螺距Flash CT扫描，然后进行气道三维重建，多层面重建(MPR),容积显示(VR)进行观察，测量上气道的矢状径、冠状径及截面积；B组：常规MSCT扫描OSAS患者11例，分析比较两组病例的辐射剂量。结果OSAS患者睡眠呼吸暂停时气道最狭窄处面积比清醒时明显变小，在悬雍垂区差异有统计学意义（P<0.05）。 A组有效辐射剂量ED（0.43±0.019）msv，B组为（0.76±0.033) msv，A组比B组减少了43.43%的有效辐射剂量，有统计学差异（P<0.05）。结论双源CT flash扫描可动态观察气道，并对狭窄部位和范围进行定位，为选择治疗方案包括外科手术方式提供可靠依据,并可降低辐射剂量。
목적：탐토Flash CT재조새성수면호흡잠정종합정（OSAS）진단중적응용개치。방법 A조：11례OSAS환자재수면전、후분별진행대라거Flash CT소묘，연후진행기도삼유중건，다층면중건(MPR),용적현시(VR)진행관찰，측량상기도적시상경、관상경급절면적；B조：상규MSCT소묘OSAS환자11례，분석비교량조병례적복사제량。결과OSAS환자수면호흡잠정시기도최협착처면적비청성시명현변소，재현옹수구차이유통계학의의（P<0.05）。 A조유효복사제량ED（0.43±0.019）msv，B조위（0.76±0.033) msv，A조비B조감소료43.43%적유효복사제량，유통계학차이（P<0.05）。결론쌍원CT flash소묘가동태관찰기도，병대협착부위화범위진행정위，위선택치료방안포괄외과수술방식제공가고의거,병가강저복사제량。
Object To asses the application value of flash CT amomg the patients with obstructive sleep apnea syndrome (OSAS). Methods 11 patients with OSAS were scanned by high-pitch spiral scanning in sleeping and nonsleeping status respectively ,and upper airway were reconstruct in group A,and the cross-section area with its corresponding sagital,axial,cornal diameters were mesureed respec-tively.In MSCT scanning mode were applied in group B.The CT dose (ED) were compared between two groups. Results OSAS patients were obviously smaller in sleeping status than in nonsleeping status .There are statistically significant difference at the uvula levels (P<0.05). The ED in group A and B was(0.43±0.019)msv and(0.76±0.033) msv(P<0.05).The effective dose was decreased by 43.43%for group A. Conclusion Flash CT helps evaluating the degree and range of stenois of the upper airway in OSAS patients and is useful in treatment planning. The diagnosis of OSAS disease using flash scan mode can reduce radiation expose than using MSCT scanning mode.