Evaluating Variations of Bladder Volume Using an Ultrasound Scanner in Rectal Cancer Patients during Chemoradiation: Is Protocol-Based Full Bladder Maintenance Using a Bladder Scanner Useful to Maintain the Bladder Volume?

• Hong In Yoon,

  Affiliation Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea

  ⨯
• Yoonsun Chung,

  Affiliation Department of Radiation Oncology, Samsung medical center, Seoul, Korea

  ⨯
• Jee Suk Chang,

  Affiliation Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea

  ⨯
• Joo Yong Lee,

  Affiliation Department of Urology, Yonsei University College of Medicine, Seoul, Korea

  ⨯
• Soo Jung Park ,

  Contributed equally to this work with: Soo Jung Park, Woong Sub Koom

  * E-mail: mdgold@yuhs.ac (WSK); SJPARK@yuhs.ac (SJP)

  Affiliation Department of Internal Medicine and Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea

  ⨯
• Woong Sub Koom

  Contributed equally to this work with: Soo Jung Park, Woong Sub Koom

  * E-mail: mdgold@yuhs.ac (WSK); SJPARK@yuhs.ac (SJP)

  Affiliations Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea, Yonsei Song-Dang Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Korea

  ⨯