Breast cancer adjuvant radiotherapy using active breathing control-moderate inspiration breath-hold - a case report

• Published in: Klinická onkologie Vol. 26; no. 2; p. 143
• Main Authors: Vrána, D, Cwiertka, K, Lukešová, L
• Format: Journal Article
• Language: Czech
• Published: Czech Republic 2013
• Subjects: Adult; Breast Neoplasms - radiotherapy; Breath Holding; Female; Humans; Radiotherapy Dosage; Radiotherapy, Adjuvant - methods
• ISSN: 0862-495X
• DOI: 10.14735/amko2013143

Chest movements during the breathing cycle represent a significant problem during radiotherapy of target volumes in the chest. There are several methods how to solve this problem. We have used Active breathing control-moderate inspiration breath-hold device in the case of adjuvant treatment of breast cancer. Comparing the DVH (dose-volume histograms) without ABC the heart dose is V25 = 6,95% = 34 cm3, V30 = 5,36%, V45 = 1,71%, D mean 6,2 Gy, however in the case of using ABC device V25 = 1,96% = 8,77 cm3, V30 = 1,26%, V45 = 0%, D mean = 2,58 Gy. The dose delivered to left lung was in the first case V20 = 31,2%, D mean = 15,9 Gy and with ABC device V20 = 26,99% a D mean 13,6 Gy. Doses deliver to right lung, cord and target volume coverage were similar in both situations. According to our experience ABC device represents simple technique how to solve problems with chest movements during radiotherapy.