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Acceptance Testing and Commissioning of Robotic Intensity-Modulated Radiation Therapy M6 System Equipped with InCiseTM2 Multileaf Collimator

  • Yoon, Jeongmin;Park, Kwangwoo;Kim, Jin Sung;Kim, Yong Bae;Lee, Ho
    • Progress in Medical Physics
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    • v.29 no.1
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    • pp.8-15
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    • 2018
  • This work reports the acceptance testing and commissioning experience of the Robotic Intensity-Modulated Radiation Therapy (IMRT) M6 system with a newly released $InCise^{TM}2$ Multileaf Collimator (MLC) installed at the Yonsei Cancer Center. Acceptance testing included a mechanical interdigitation test, leaf positional accuracy, leakage check, and End-to-End (E2E) tests. Beam data measurements included tissue-phantom ratios (TPRs), off-center ratios (OCRs), output factors collected at 11 field sizes (the smallest field size was $7.6mm{\times}7.7mm$ and largest field size was $115.0mm{\times}100.1mm$ at 800 mm source-to-axis distance), and open beam profiles. The beam model was verified by checking patient-specific quality assurance (QA) in four fiducial-inserted phantoms, using 10 intracranial and extracranial patient plans. All measurements for acceptance testing satisfied manufacturing specifications. Mean leaf position offsets using the Garden Fence test were found to be $0.01{\pm}0.06mm$ and $0.07{\pm}0.05mm$ for X1 and X2 leaf banks, respectively. Maximum and average leaf leakages were 0.20% and 0.18%, respectively. E2E tests for five tracking modes showed 0.26 mm (6D Skull), 0.3 mm (Fiducial), 0.26 mm (Xsight Spine), 0.62 mm (Xsight Lung), and 0.6 mm (Synchrony). TPRs, OCRs, output factors, and open beams measured under various conditions agreed with composite data provided from the manufacturer to within 2%. Patient-specific QA results were evaluated in two ways. Point dose measurements with an ion chamber were all within the 5% absolute-dose agreement, and relative-dose measurements using an array ion chamber detector all satisfied the 3%/3 mm gamma criterion for more than 90% of the measurement points. The Robotic IMRT M6 system equipped with the $InCise^{TM}2$ MLC was proven to be accurate and reliable.

Chronic somatic painful conditions : Regional Myofacial Pain Syndrome, Fibromyalgia

  • 최창혁
    • Clinics in Shoulder and Elbow
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    • v.6 no.1
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    • pp.1-7
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    • 2003
  • Myofascial pain이나 filbrbomyalgia 등에 의한 만성 견관절통증은 보존적 치료로 치료적인 효과를 기대할 수 있는 질환이며, 수술적 치료가 필요한 다른 질환과의 감별을 요한다. 만성적인 견관절 동통의 치료는 증상의 원인과 악화요인을 확인하고 실질적으로 도움이 될 수 있는 적절한 치료법을, 단계적으로 적용하는 것이 효과적이며. 환자와 teamwork을 형성하여, 환자가 병증에 대해 충분히 이해하고 안심할 수 있도록 도와주는 것이 무엇보다 중요하다.

Isolated Unilateral Hypoglossal Nerve Palsy after Shoulder Surgery in Beach-Chair Position - Case Report - (좌 체위 견관절 수술 후 발생한 설하신경 단독 편마비 - 증례 보고 -)

  • Lee Yong Girl;Lee Dong-hun
    • Clinics in Shoulder and Elbow
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    • v.7 no.1
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    • pp.51-55
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    • 2004
  • Arthroscopic surgery of the shoulder is regarded as a convenient and safe approach, but there is a possibility of complication during procedure. We report an isolated unilateral hypoglossal neurapraxia following combined arthroscopic and open Bankart reconstruction performed in beach-chair position under general anesthesia with orotracheal intubation.

Traumatic Anterior Instability: Failed Repairs and Complicated Problems (외상성 전방 불안정성: 실패한 봉합술 및 합병증)

  • Kim, Young-Kyu
    • Clinics in Shoulder and Elbow
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    • v.10 no.1
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    • pp.1-9
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    • 2007
  • 전방 불안정성의 수술적 치료의 목적은 안정성을 회복하고 동통 없는 기능 회복에 있으나 이러한 목적과는 달리 여러 합병증이 발생하여 결과가 불량하게 되는 경우가 종종 발생한다. 따라서 치료의 실패를 줄이기 위해 최대한 노력하여야 하며, 일단 실패가 발생하게 되면 정확한 원인과 해부학적 병적 상태를 정확히 파악하여야 보다 좋은 치료 결과를 얻을 수 있다.

Osteomyelitis Resulting from Chronic Septic Olecranon Bursitis: Report of Two Cases

  • Moon, Myung-Sang;Kim, Seong-Tae;Park, Bong-Keun
    • Clinics in Shoulder and Elbow
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    • v.19 no.4
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    • pp.252-255
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    • 2016
  • We reported the two cases of olecranon osteomyelitis secondary to the iatrogenic chronic relapsing septic olecranon bursitis. Infection was well eradicated by excision of the infected bursa and curettage of the eroded olecranon under the coverage of antibiotic therapy

Arthroscopic Treatment of Elbow Osteoarthritis and Arthroscopic Ulnar Nerve Decompression

  • Chung, Seok Won
    • Clinics in Shoulder and Elbow
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    • v.19 no.4
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    • pp.256-263
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    • 2016
  • Although arthroscopic surgery has been used conventionally, it has not been widely adopted yet due to the risks of complications, including nerve damage, technical difficulties, and limited indications. As shown in other joints, however, the use of an arthroscope will gradually increased in the elbow joint ('Arthroscopy always wins'). Herein, arthroscopic treatments and arthroscopic ulnar nerve decompression will be discussed in cases of elbow osteoarthritis.

Comparison of Ulnar Collateral Ligament Reconstruction Techniques in the Elbow of Sports Players

  • Moon, Jun-Gyu;Lee, Hee-Dong
    • Clinics in Shoulder and Elbow
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    • v.23 no.1
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    • pp.41-47
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    • 2020
  • Ulnar collateral ligament injuries have been increasingly common in overhead throwing athletes. Ulnar collateral ligament reconstruction is the current gold standard for managing ulnar collateral ligament insufficiency, and numerous reconstruction techniques have been described. Although good clinical outcomes have been reported regarding return to sports, there are still several technical issues including exposure, graft selection and fixation, and ulnar nerve management. This review article summarizes a variety of surgical techniques of ulnar collateral ligament reconstructions and compares clinical outcomes and biomechanics.