조영제 전송장치의 세균 감염 및 업무효율성에 관한 연구

범희남(Hee-Nam Bum),함인근(In-Guen Ham),한재복(Jae-Bok Han),송종남(Jong-Nam Song),최남길(Nam-Gil Choi) 한국콘텐츠학회 2014 한국콘텐츠학회논문지 Vol.14 No.12

본 연구는 단일 조영제 전송장치와 이중 조영제 전송장치를 사용한 양군의 세균오염정도와 업무효율성을 비교·분석하여 그 유용성을 알아보고자 한다. 세균오염정도는 150 ml, 500 ml, 1000 ml에서 각각 평균 6±0.5, 11±0.5, 18±0.5로 나타났다. 세균오염발생정도는 단일 조영제 전송장치는 2.20±2.46 CFU, 이중 조영제 전송장치는 0.60±0.99 CFU로 나타났다. 또한 이중 조영제 전송장치는 CT 조영제 자동주입기 실린지 준비시간을 단축하여, 업무가 증가하는 CT 실의 흐름을 원활하게 하여 직원의 만족도를 향상시켜 임상에서 적극 활용할 것을 추천한다. The purpose of this study was to compare SCTS with Dual Contrast transfer Set(DCTS) for bacterial infection and work efficiency. CTSs bacterial contamination was occurred 50ml: 6±0.5, 500ml:11±0.5, 1000ml :18±0.5 respectively. SCTS mean number of bacteria was 2.20 ± 2.46 CFU, DCTS was 0.60 ± 0.99 CFU. At CT room that is increasing CT enhancement scan, because of using DCTS shorten contrast auto-injector charging time, improve work flow and reduce bacterial contamination, we recommend strongly to use DCTS in clinical CT enhancement scan.

심혈관 협착에 대한 64Volume Cardiac CT와 Cardiac Angiography의 비교

방순욱(Soon Wook Bang),범희남(Hee Nam Bum),왕태욱(Tae Wook Wang),선종백(Jong Baek Sun),장영일(Yong Il Jang) 대한CT영상기술학회 2007 대한CT영상기술학회지 Vol.9 No.1

Purpose The author evaluated the coronary artery stenosis of using 64 volume cardiac CT angiography(CTA) compared with conventional cardiac angiography(CA) for the assessment of CTA detection accuracy. Materials and Methods This study induded 18(13 men, 5 worren)patients who underwent both CTA and CA to evaluate coronary artery stenosis of January to July 2006, and two study of during the seven days. We used 64 Volume CT(40mrn detector coverage, 0.625mm thickness, 0.2:1~0.24:1 pitch, 120kvp, 650mA), between the intravenous injection of contrast medium 70-90ml(Iopamidol 370, 4 mL/sec). Scan row data are acquired conticuously images can be reconstructed ten grade R-R interval(5-95%) transfer the 4.2 advantage workstation, and obtained 3 dimensional image. One radiologist and one cardiologist report of the classification of LAD, LCX, RCA with assessment of this artery stenosis of CTA detection accuracy.. Results The 64 volume CTA detected coronary artery stenosis of 79.6%(43 of 54) of all 54 cases conventional coronary angiography, with LAD stenosis of 83.3%(15 of 18), LCX stenosis of 77%(14 of 18), RCA stenosis of 77.7%(14 of 18). Conclusion 64 Volurre Cardiac CT Angiography is good noninvasive technique of very useful inspection to evaluated coronary artery stenosis.

Cardiac CTA의 조영제 주입시간에 관한 연구

김창곤(Chang Kon Kim),허재윤(Jae Yun Heo),고창수(Chang Su Ko),범희남(Hee Nam Bum),선종백(Jong Baek Seon) 대한CT영상기술학회 2009 대한CT영상기술학회지 Vol.11 No.1

Purpose This study was to survey contrast media washout time in right atrium(RA) using time bolus and saline push method. And, we have compared routine injection with changed injection method in order to obtain the excellent images without streak artifacts at cardiac computed tomographic angiography(CTA). Materials and methods We have inspected 50 people those who had scanned CT during November, 2008. After preparing intravenous route in medial-cubital vein at elbow joint of right side, we had performed the test bolus at the ascending aorta. We attained enhance peak time and injected the combination of contrast media(CM) and saline(CM: 60cc, 4cc/sec ; saline: 50cc, 5cc/sec). Then we acquired contrast media washout time in RA to below 300HU. We have selected 45 people those who had scanned cardiac CTA between October to November 2005. We divided them to 3 groups(group A: CM 70cc, 4.0/sec ; saline 30cc, 4.0/sec, group B: CM 75cc, 4.0/sec ; saline 30cc, 4.0/sec, group C: CM 80cc, 4.0/sec ; saline 30cc, 4.0/sec) and evaluated in the quantitative and qualitative way. We have performed 50 people those who had scanned cardiac CTA using changed volume method(group D) and evaluated in and qualitative way during January, 2009. Results 1. At the time curve coordinates against HU of RA, contrast media washout time takes 23sec in 15 and takes 24sec in 35 people to below 300HU. It means that takes about 9sec after injection contrast media. 2. Group D is superior to other groups(A, B, C) in the quantitative way. 3. Group D is superior to other groups(A, B, C) in the qualitative way. Conclusion According to the results contrast media washout time has regularity and changed volume method helped to obtain excellent image without streak artifacts.

Poor vein 환자의 Cardiac CTA 검사 시 조영제 주입방법에 관한 연구

이선표(Sun Pyo Lee),최재성(Jae Seong Choi),범희남(Hee Nam Bum),전주섭(Joo Seob Jeon),최남길(Nam Gil Choi) 대한CT영상기술학회 2015 대한CT영상기술학회지 Vol.17 No.1

목적 : Poor vein 환자의 Cardiac CTA검사 시 일반적인 편측 조영제 주입과 비교하여 Reverse Y connector를 이용한 양측 조영제 주입 시 유용성에 대하여 평가하고자 하였다. 대상 및 방법 : 2012년 2월부터 2014년 8월 까지 Cardiac CTA로 추적 관찰하는 환자들 중 Poor vein 환자 17명(남자:5명, 여자:12명, 평균64세)을 대상으로 하였다. 17명의 환자는 과거 검사 시 좋지 않았던 혈관으로 인해 Cardiac CTA검사에 필요한 적정 조영제 주입속도보다 낮은 flow rate의 속도로 조영제를 주입해야만 했던 환자들이었으며 조영제 주입 시 부작용(혈관통: 4명, 혈관외유출: 1명)을 경험했던 환자도 포함되어 있었다. 검사방법은 양측 상지에 24G catheter로 IV route를 확보 후 Reverse Y connector를 연결하고 조영제 자동주입기를 통해 4~4.5 mL/sec 의 속도로 조영제를 주입하여 영상을 획득하였다. 영상의 분석방법으로는 양측 주입영상과 과거 편측 주입영상의 Ascending aorta와 RCA, LM 에 관심부위(ROI)를 설정하여 HU(hounsfield unit)값을 측정하여 조영증강정도를 비교하였으며 영상의 화질 평가는 재구성되어진 VRT영상과 Curved MPR영상을 영상의학과 의사 1명과 방사선사 2명이 Blind-test를 통해 5점 척도로 평가하였다. 결과 : 양측주입영상과 편측주입 영상의 조영증강정도는 Ascending aorta에서 418.82 ± 36.99, 391.05 ± 56, RCA에서 419.82 ± 35.83, 389.2 3± 51.67, LM에서 422.41 ± 38.94, 392.70 ± 53.74로 양측 주입을 통해 획득되어진 영상의 HU값이 평균 14% 높게 나왔으며 통계적으로 유의한 차이를 보였다. 재구성 영상의 화질 평가점수는 양측 주입 시 4.21 ± 0.42점, 편측 주입 시 3.8 4± 0.52점으로 양측주입을 통해 획득한 영상의 점수에서 높게 나타났으며 통계적으로 유의한 차이를 보였다. 결론 : Poor vein 환자의 cardiac 검사 시 Reverse Y connector를 이용하여 양측 상지에 조영제를 주입한 결과 편측주입에 비해 심장혈관 내에서의 조영증강 효과와 재구성 영상의 질 향상, 혈관통의 감소, 그리고 혈관외유출 등 부작용을 감소시킴으로서 검사에 대한 만족도 향상 등 장점들이 많아 임상적용을 적극 권장하는 바이다. Purpose : This study evaluated on the usefulness of both sides injection using Reverse Y connector compared to ordinary one side contrast media injection for poor vein patient in Cardiac CTA. Materials and method : The study included 18 patients (5male, 12females, mean age 64) who had poor vein through Cardiac CTA in between February, 2012 to August, 2014. Examining process went as the following, we obtained a image from automatic contrast media injection at a speed of 4~4.5 mL/sec after gaining IV route through 24G catheter in both of arms. A comparison of the image qualities and degree of vascular contrast enhancement was made between the two groups and evaluated statistically by SPSS program. Result : By using reverse Y connector, we obtained a image and the initial image and obtained result was Ascending aorta and RCA and LM’s contrast enhancement level was shown as 418.82 ± 36.99~391.05 ± 56, 419.82 ± 35.83~389.23 ± 51.67, 422.41 ± 38.94~392.70 ± 53.74, which are higher HU value than others and shown difference in between statistically. Also the qualification score for two examination will be 4.21 ± 0.42 and 3.84 ± 0.52, so therefore the image of both injection tells an outstanding difference. Conclusion : Reverse Y connector is used to test out contrast media by IV line and when it was done, it brought higher quality for evaluating the increasing level and higher quality than previous injection exam. The contrast media injection through both veins divides the pressure that gets into one vein to both veins, so angiodynia, extravasation problems could be minimized and the increasing attenuation value has been shown that Cardiac CTA Reverse Y connector usage can be very useful.

뇌종양의 역동적 조영증강 CT

왕태욱(Tae Wook WANG),이현규(Hyun Gyu LEE),범희남(Hee Nam BUM),선종백(Jong Baek SUN),이종호(Jong Ho LEE),은성종(Sung Jong Eun) 대한CT영상기술학회 2005 대한CT영상기술학회지 Vol.7 No.1

Purpose To evaluate peak enhancement time from types of brain tumor by usmg of Smart prep Rx(auto bolus tracking)in dynamic contrast enhanced CT. Materials and Methods During May to August 2004, We studied 30 patients diagnosed with brain tumors. The number of persons were 13 in male and 17 in female. The patients were name of disease that 12 patients in Meningioma and 8 patients in Lymphoma and 4 patients in Germinoma and 6 patients in Metastasis(Adenocarcinoma). Our used Light speed Ultra 16(GE Medical System) detector rows 16, and slice thickness 2.5mm, number of images per rotation 8i with injection of total 100ml of contrast at the rate of 2ml a second. This imaging data was scanning a interval 5 second after 10 second and using of smart prep Rx in order to analysis of peak enhacement time. Results Average of peak enhancement time in each brain tumor was 90 second in Meningioma, 130 second in Lymphoma, 85 second in Germinoma, and 68 second in Metastasis(Adenocarcinoma). After injection of contrast media that appeared enhancement time differently a sort of tumor. Conclusion To measured peak enhancement time of brain tumors in preoperative contrast enhancement CT may be helpful in differential diagnosis of brain tumors, planning operative method and reducing rescan rate.