• 제목/요약/키워드: Surgical clips

검색결과 24건 처리시간 0.034초

유방보존술 후 방사선치료에서 수술 흉터와 삽입된 클립을 이용한 전자설 추가 방사선 조사야 평가 (Evaluation of Electron Boost Fields based on Surgical Clips and Operative Scars in Definitive Breast Irradiation)

  • 이레나;정은아;이지혜;서현숙
    • Radiation Oncology Journal
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    • 제23권4호
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    • pp.236-242
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    • 2005
  • 목적: 본 연구에서는 초기 유방암환자에서 보존적 수술 후 전자선을 이용한 추가방사선 조사 시 조사야의 범위 결정에 수술상흔 및 외과적 클립이 미치는 역할을 분석하였으며 이상적인 조사야 범위 결정방법을 제시하였다. 대상 및 방법: 조기 유방암 환자로 병소를 제거한 후 외과적 클립을 $4{\sim}7$개 삽입한 환자 20명을 대상으로 연구를 시행하였다. 전자선의 치료 에너지를 결정하기 위하여 피부에서부터 흉부벽까지의 거리(SCD)와 병변 조직의 가장 뒤쪽에 위치해 있는 클립까지의 거리를 측정하였다. 수술시 삽입된 클립들을 simulation 필름 상에서 연결하여 방사선학적 tumor bed로 정의하였다. 방사선 조사야의 범위는 3가지 방법에 의해 simulation 필름에 그렸다. 임상방사선 조사야(CF)는 수술 상흔 둘레로 3 cm의 여유를 주었고, 외과적방사선 조사야(SF)는 클립주위로 2 cm의 여유를 주었으며, 마지막으로 이상적 방사선조사야(IF)는 수술 상흔과 클립을 모두 포함하여 2 cm의 여유를 주었다. 그려진 조사야들의 면적을 측정하기 위하여 치료계획 컴퓨터에 입력되었고 측정된 면적을 비교하였다. 마지막으로 삽입된 클립들을 CT상에서 그려 넣었고 클립들의 3차원적인 선량분포를 알아보기 위해 선량체적표를 얻었다. 결과: SCD와 가장 깊이 삽입된 clip까지의 거리의 평균차이는 $0.7{\pm}0.56cm$이다. 12명의 환자의 경우 깊이의 차이가 있다. 수술 상흔과 클립들의 평균 위치의 변화는 상방으로 1.7 cm, 하방으로 1.2 cm, 내측으로 1.2 cm, 그리고 외측으로 0.9 cm이다. CF의 면적은 20명의 환자 중 6명의 경우 SF보다 크고 IF보다 크다. SF 와 IF의 면적 차이는 15의 환자에서 5%보다 작다. CF 조사야를 이용할 경우 15명의 환자들에 대해 1개 또는 3개의 클립들을 조사야 내에 포함하지 못하고 있다. 또한 클립들의 선량분포를 볼 때 17명의 환자들이 처방선량의 80% 미만을 받는 즉 선량적으로 부적절한 선량을 받는 클립들이 있었다. 결론: 수술 상흔을 중심으로 방사선 조사야 범위를 결정 할 경우 병변의 상하 부위를 적절히 포함하지 못하므로 병변 조직의 충분한 선량을 전달하지 못하였다. 외과적 클립만을 이용할 경우는 수술 상흔을 모두 포함하지 못하였다. 따라서 결론적으로 즉 수술 상흔과 외과적 클립을 모두 포함하는 본 기관에서 사용하는 방법으로 전자선 추가 조사야를 그린다면 정상조직의 부작용 및 지리상으로 병변조직의 빠트림을 최소화할 수 있을 것이다.

The role of surgical clips in the evaluation of interfractional uncertainty for treatment of hepatobiliary and pancreatic cancer with postoperative radiotherapy

  • Bae, Jin Suk;Kim, Dong Hyun;Kim, Won Taek;Kim, Yong Ho;Park, Dahl;Ki, Yong Kan
    • Radiation Oncology Journal
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    • 제35권1호
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    • pp.65-70
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    • 2017
  • Purpose: To evaluate the utility of implanted surgical clips for detecting interfractional errors in the treatment of hepatobiliary and pancreatic cancer with postoperative radiotherapy (PORT). Methods and Materials: Twenty patients had been treated with PORT for locally advanced hepatobiliary or pancreatic cancer, from November 2014 to April 2016. Patients underwent computed tomography simulation and were treated in expiratory breathing phase. During treatment, orthogonal kilovoltage (kV) imaging was taken twice a week, and isocenter shifts were made to match bony anatomy. The difference in position of clips between kV images and digitally reconstructed radiographs was determined. Clips were consist of 3 proximal clips (clip_p, ${\leq}2cm$) and 3 distal clips (clip_d, >2 cm), which were classified according to distance from treatment center. The interfractional displacements of clips were measured in the superior-inferior (SI), anterior-posterior (AP), and right-left (RL) directions. Results: The translocation of clip was well correlated with diaphragm movement in 90.4% (190/210) of all images. The clip position errors greater than 5 mm were observed in 26.0% in SI, 1.8% in AP, and 5.4% in RL directions, respectively. Moreover, the clip position errors greater than 10 mm were observed in 1.9% in SI, 0.2% in AP, and 0.2% in RL directions, despite respiratory control. Conclusion: Quantitative analysis of surgical clip displacement reflect respiratory motion, setup errors and postoperative change of intraabdominal organ position. Furthermore, position of clips is distinguished easily in verification images. The identification of the surgical clip position may lead to a significant improvement in the accuracy of upper abdominal radiation therapy.

유방암 환자의 정상 호흡에서 종양에 삽입된 외과적 클립의 움직임 분석 (Analysis of the Movement of Surgical Clips Implanted in Tumor Bed during Normal Breathing for Breast Cancer Patients)

  • 이레나;정은아;서현숙;이경자;이지혜
    • Radiation Oncology Journal
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    • 제24권3호
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    • pp.192-200
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    • 2006
  • 목 적: 정상 호흡에서 외과적 클립을 이용하여 유방 종양의 움직임을 평가하였다. 대상 및 방법: 유방 보존 수술 후 방사선 치료를 받은 7명의 환자를 대상으로 하여 각 환자별로 일반적인 모의 치료 과정에서 형광 투시 영상을 얻었다. 한 환자의 영상만 매초 15프레임의 비율로 기록되었고, 다른 환자들의 영상은 1초당 30프레임의 비율로 앞뒤, 옆, 빗나가는 방향에서 기록되었다. 각 클립의 원점에서의 최대, 최소 움직임을 측정하였고 이를 통하여 클립마다 각 방향에서의 최대 움직임을 계산하였다. 비교를 위하여 위-아래 방향으로의 횡경막의 움직임도 측정하였다. 결 과: 앞뒤 방향의 영상으로부터 옆 방향과 위-아래 방향으로의 외과적 클립의 평균 움직임은 $0.8{\pm}0.5\;mm,\;0.9{\pm}0.2\;mm$이며, 최대 움직임은 1.9 mm, 1.2 mm였다. 또한, 옆 방향 영상에 나타난 클립들은 평균적으로 앞-뒤 방향으로 $1.3{\pm}0.7\;mm$, 위-아래 방향으로 $1.3{\pm}0.6\;mm$ 움직였으며, 최대 움직임은 각각 2.6 mm, 2.6 mm였다. 빗나가는 방향의 영상에 있는 외과적 클립들의 평균 움직임과 최대 움직임은 비스듬한 방향에서는 $1.2{\pm}0.5\;mm$와 2.4 mm였으며, 위-아래 방향으로는 $0.9{\pm}0.4\;mm$와 1.7 mm였다. 횡격막은 위-아래 방향으로 평균적으로 $14.0{\pm}2.4\;mm$ 움직였으며, 최대 18.8 mm 움직였다. 결 론: 호흡에 의해 발생되는 클립의 움직임은 횡경막의 움직임에 비해서 크지 않은 것으로 나타났다. 그리고, 외과적 클립의 움직임은 모든 방향에서 3 mm 이내였다. 이 결과, 유방암의 방사선 치료 시 호흡을 잡아주는 기술이나 도구가 필요하지 않다는 것을 알 수 있었다.

Endoscopic Intervention for Anastomotic Leakage After Gastrectomy

  • Ji Yoon Kim;Hyunsoo Chung
    • Journal of Gastric Cancer
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    • 제24권1호
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    • pp.108-121
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    • 2024
  • Anastomotic leaks and fistulas are significant complications of gastric surgery that potentially lead to increased postoperative morbidity and mortality. Surgical intervention is reserved for cases with severe symptoms or hemodynamic instability; however, surgery carries a higher risk of complications. With advancements in endoscopic treatment options, endoscopic approaches have emerged as the primary choice for managing these complications. Endoscopic clipping is a traditional method comprising 2 main categories: through-the-scope clips and over-the-scope clips. Through-the-scope clips are user friendly and adaptable to various clinical scenarios, whereas over-the-scope clips can close larger defects. Another promising approach is endoscopic stent insertion, which has shown a high success rate for leak closure, although vigilant monitoring is required to monitor stent migration. Infection control is essential in post-surgical leakage cases, and endoscopic internal drainage provides a relatively safe and noninvasive means to manage fluids, contributing to infection control and wound healing promotion. Endoscopic suturing offers full-thickness wound closure, but requires additional training and endoscopic versatility. As a promising tool, endoscopic vacuum therapy potentially surpasses stent therapy by draining inflammatory materials and closing defects. Furthermore, the use of tissue sealants, such as fibrin glue and cyanoacrylate, has been reported to be effective in selected situations. The choice of endoscopic device should be tailored to individual cases and specific patient conditions, with careful consideration of the nature of the defect. Further extensive studies involving larger patient populations are required to provide more robust evidence on the efficacy of endoscopic approach in managing post-gastric anastomotic leaks.

복강경 담낭절제술 후 헤모락 클립의 이동으로 발생한 복통 1예 (Abdominal Pain Due to Hem-o-lok Clip Migration after Laparoscopic Cholecystectomy)

  • 류우선;주종석;강선형;문희석;김석현;성재규;이병석;이엄석
    • 대한소화기학회지
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    • 제72권6호
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    • pp.313-317
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    • 2018
  • During laparoscopic cholecystectomy, a surgical clip is used to control the cystic duct and cystic artery. In the past, metallic clips were usually used, but over recent years, interest in the use of Hem-o-lok clips has increased. Surgical clip migration into the common bile duct (CBD) after laparoscopic cholecystectomy has rarely been reported and the majority of reported cases involved metallic clips. In this report, we describe the case of a 53-year-old woman who presented with abdominal pain caused by migration of a Hem-o-lok clip into the CBD. The patient had undergone laparoscopic cholecystectomy 10 months previously. Abdominal CT revealed an indistinct, minute, radiation-impermeable object in the distal CBD. The object was successfully removed by sphincterotomy via ERCP using a stone basket and was identified as a Hem-o-lok clip.

Superciliary Keyhole Approach for Unruptured Anterior Circulation Aneurysms : Surgical Technique, Indications, and Contraindications

  • Park, Jaechan
    • Journal of Korean Neurosurgical Society
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    • 제56권5호
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    • pp.371-374
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    • 2014
  • Neurosurgeons have been trying to reduce surgical invasiveness by applying minimally invasive keyhole approaches. Therefore, this paper clarifies the detailed surgical technique, its limitations, proper indications, and contraindications for a superciliary keyhole approach as a minimally invasive modification of a pterional approach. Successful superciliary keyhole surgery for unruptured aneurysms requires an understanding of the limitations and the use of special surgical techniques. Essentially, this means the effective selection of surgical indications, usage of the appropriate surgical instruments with a tubular shaft, and refined surgical techniques, including straightforward access to the aneurysm, clean surgical dissection, and the application of clips with an appropriate configuration. A superciliary keyhole approach allows unruptured anterior circulation aneurysms to be clipped safely, rapidly, and less invasively on the basis of appropriate surgical indications.

Internal Carotid Artery Reconstruction Using Multiple Fenestrated Clips for Complete Occlusion of Large Paraclinoid Aneurysms

  • Lee, Sang Kook;Kim, Jae Min
    • Journal of Korean Neurosurgical Society
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    • 제54권6호
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    • pp.477-483
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    • 2013
  • Objective : Although surgical techniques for clipping paraclinoid aneurysms have evolved significantly in recent times, direct microsurgical clipping of large and giant paraclinoid aneurysms remains a formidable surgical challenge. We review here our surgical experiences in direct surgical clipping of large and giant paraclinoid aneurysms, especially in dealing with anterior clinoidectomy, distal dural ring resection, optic canal unroofing, clipping techniques, and surgical complications. Methods : Between September 2001 and February 2012, we directly obliterated ten large and giant paraclinoid aneurysms. In all cases, tailored orbito-zygomatic craniotomies with extradural and/or intradural clinoidectomy were performed. The efficacy of surgical clipping was evaluated with postoperative digital subtraction angiography and computed tomographic angiography. Results : Of the ten cases reported, five each were of ruptured and unruptured aneurysms. Five aneurysms occurred in the carotid cave, two in the superior hypophyseal artery, two in the intracavernous, and one in the posterior wall. The mean diameter of the aneurysms sac was 18.8 mm in the greatest dimension. All large and giant paraclinoid aneurysms were obliterated with direct neck clipping without bypass. With the exception of the one intracavenous aneurysm, all large and giant paraclinoid aneurysms were occluded completely. Conclusion : The key features of successful surgical clipping of large and giant paraclinoid aneurysms include enhancing exposure of proximal neck of aneurysms, establishing proximal control, and completely obliterating aneurysms with minimal manipulation of the optic nerve. Our results suggest that internal carotid artery reconstruction using multiple fenestrated clips without bypass may potentially achieve complete occlusion of large paraclinoid aneurysms.

Outcome and Cost Effectiveness of Ultrasonographically Guided Surgical Clip Placement for Tumor Localization in Patients undergoing Neo-adjuvant Chemotherapy for Breast Cancer

  • Masroor, Imrana;Zeeshan, Sana;Afzal, Shaista;Sufian, Saira Naz;Ali, Madeeha;Khan, Shaista;Ahmad, Khabir
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권18호
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    • pp.8339-8343
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    • 2016
  • Background: To determine the outcome and cost saving by placing ultrasound guided surgical clips for tumor localization in patients undergoing neo-adjuvant chemotherapy for breast cancer. Materials and Methods: This retrospective cross sectional analytical study was conducted at the Department of Diagnostic Radiology, Aga Khan University Hospital, Karachi, Pakistan from January to December 2014. A sample of 25 women fulfilling our selection criteria was taken. All patients came to our department for ultrasound guided core biopsy of suspicious breast lesions and clip placement in the index lesion prior to neo-adjuvant chemotherapy. All the selected patients had biopsy proven breast cancer. Results: The mean age was $45{\pm}11.6years$. There were no complications seen after clip placement in terms of clip migration or hemorrhage. The cost of commercially available markers was approximately PKR 9,000 (US$ 90) and that of the surgical clip was PKR 900 (US$ 9). The cost of surgical clips in 25 patients was PKR 22,500 (US$ 225), when compared to the commercially available markers which may have incurred a cost of PKR 225,000 (US$ 2,250). The total cost saving for 25 patients was PKR 202,500 (US$ 2, 025), making it PKR 8100 (US$ 81) per patient. Conclusions: The results of our study show that ultrasound guided surgical clip placement in index lesions prior to neo-adjuvant therapy is a safe and cost effective method to identify tumor bed and response to treatment for further management.

개의 난소자궁적출술에 있어서 티타늄클립의 두 가지 적용방법에 대한 비교 (Comparison of Two Techniques on Titanium Clip Application for Ovariohysterectomy in Bitches)

  • 박진석;강현구;김일화
    • 한국임상수의학회지
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    • 제28권6호
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    • pp.566-570
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    • 2011
  • 본 연구에서는 난소자궁적출술에 있어서 티타늄(titanium) 클립 적용 시 발생할 수 있는 합병증을 평가하고, 난소혈관과 난소걸이인대의 두 가지 결찰법을 비교하여 합병증을 최소화 할 수 있는 수술법을 찾고자 하였다. 실험을 위해 6마리의 암컷 비글견이 사용되었으며, 세 마리씩 두 그룹으로 나누어 한 그룹은 난소걸이인대와 난소혈관을 함께 결찰 하였고, 나머지 한 그룹은 난소걸이인대를 결찰하지 않고 난소혈관만 결찰 하였다. 두 수술법을 비교하기 위해서 매달 1회씩 1년 동안 복강 X-ray 검사를 통해 적용된 클립의 위치 변화를 확인하였고, 적용된 클립에 의한 염증반응 유무는 혈액검사를 통해 확인하였다. X-ray 검사 상에서 두 그룹의 클립 위치는 큰 변화를 보이지 않았으며, 혈액 검사에서도 거의 모든 수치들이 정상범위에 있었고, 염증과 관련된 임상증상 또한 관찰되지 않았다. 부검을 통한 두 그룹의 클립 포매 형태를 관찰한 결과 난소걸이인대를 결찰한 클립은 복강의 얇은 막으로 두껍게 싸여서 신장 후연에 위치하고 있는 것을 확인하였고, 난소걸이인대를 결찰하지 않은 클립은 얇게 둘러싸인 막 표면에 위치하여 신장의 아래쪽에서 관찰되었다. 이러한 결과는 난소걸이인대가 클립의 움직임을 최소화 할 수 있도록 지지해주는 역할을 하는 것을 의미하며, 따라서 티타늄 클립을 적용하는 난소자궁적출술에서 난소걸이인대를 함께 결찰하는 방법이 합병증 예방에 있어서 보다 적합한 방법으로 생각된다.