Abstract
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | Radiotherapy & Oncology |
| Vol/bind | 80 |
| Udgave nummer | 2 |
| Sider (fra-til) | 257-62 |
| Antal sider | 6 |
| ISSN | 0167-8140 |
| DOI | |
| Status | Udgivet - 1 aug. 2006 |
Bibliografisk note
Keywords: Adult; Aged; Breast Neoplasms; Female; Heart; Heart Diseases; Humans; Lung; Lung Diseases; Middle Aged; Radiation Injuries; Radiotherapy, Adjuvant; Radiotherapy, Conformal; RespirationAdgang til dokumentet
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I: Radiotherapy & Oncology, Bind 80, Nr. 2, 01.08.2006, s. 257-62.
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review
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TY - JOUR
T1 - Cardiac and pulmonary complication probabilities for breast cancer patients after routine end-inspiration gated radiotherapy
AU - Korreman, Stine S
AU - Pedersen, Anders N
AU - Josipovic, Mirjana
AU - Aarup, Lasse Rye
AU - Juhler-Nøttrup, Trine
AU - Specht, Lena
AU - Nyström, Håkan
AU - Josipovic, Mirjana
AU - Josipovic, Mirjana
AU - Josipovic, Mirjana
AU - Josipovic, Mirjana
AU - Josipovic, Mirjana
AU - Josipovic, Mirjana
AU - Josipovic, Mirjana
AU - Josipovic, Mirjana
AU - Aarup, Lasse Rye
AU - Josipović, Mirjana
N1 - Keywords: Adult; Aged; Breast Neoplasms; Female; Heart; Heart Diseases; Humans; Lung; Lung Diseases; Middle Aged; Radiation Injuries; Radiotherapy, Adjuvant; Radiotherapy, Conformal; Respiration
PY - 2006/8/1
Y1 - 2006/8/1
N2 - PURPOSE: Substantial reductions of radiation doses to heart and lung can be achieved using breathing adaptation of adjuvant radiotherapy following conservative surgery for breast cancer. The purpose of this study was to estimate the radiobiological implications after routine use of an end-inspiration gated treatment, and to compare the results with predictions based on pre-clinical CT-studies. PATIENTS AND METHODS: Nineteen consecutive patients with axillary lymph node-positive left-sided breast cancer were referred for adjuvant radiotherapy after breast conserving surgery. Treatment was performed with gating in the end-inspiration phase of audio-coached enhanced free breathing. The target intended to encompass the remaining breast, ipsilateral internal mammary and periclavicular nodes, and the prescription dose was 48Gy in 24 fractions. A three-field mono-isocentric conformal technique using deep tangentials and a supraclavicular field was employed. NTCPs were calculated using the relative seriality model for the heart, and the model proposed by Burman et al. for the lung. The observed values were compared to those predicted from two previous CT-studies for a deep inspiration breath-hold technique and an uncoached end-inspiration gating technique. RESULTS: The ipsilateral lung V(50) (relative volume receiving more than 50% of the prescription dose) had a median value of 23.7% (range 10.8-35.1%) over the patient population. The corresponding median lung pneumonitis probability was 1.1% (range 0-14%). The median heart V(50) was 0.8% (range 0-19.1%) with a corresponding median cardiac mortality NTCP of 0.1% (range 0-5.7%). These results compare well with the predictions of our previous CT-studies. There is a significant reduction in dose to the left anterior descending coronary artery for the enhanced end-inspiration gating technique compared to the uncoached end-inspiration technique employed in the CT-studies. CONCLUSIONS: In a routine clinical practice involving adjuvant breast radiotherapy gated in an enhanced end-inspiration phase, remarkably low doses to organs at risk are observed. The corresponding cardiac and pulmonary complication risks are of the order of 1% and smaller.
AB - PURPOSE: Substantial reductions of radiation doses to heart and lung can be achieved using breathing adaptation of adjuvant radiotherapy following conservative surgery for breast cancer. The purpose of this study was to estimate the radiobiological implications after routine use of an end-inspiration gated treatment, and to compare the results with predictions based on pre-clinical CT-studies. PATIENTS AND METHODS: Nineteen consecutive patients with axillary lymph node-positive left-sided breast cancer were referred for adjuvant radiotherapy after breast conserving surgery. Treatment was performed with gating in the end-inspiration phase of audio-coached enhanced free breathing. The target intended to encompass the remaining breast, ipsilateral internal mammary and periclavicular nodes, and the prescription dose was 48Gy in 24 fractions. A three-field mono-isocentric conformal technique using deep tangentials and a supraclavicular field was employed. NTCPs were calculated using the relative seriality model for the heart, and the model proposed by Burman et al. for the lung. The observed values were compared to those predicted from two previous CT-studies for a deep inspiration breath-hold technique and an uncoached end-inspiration gating technique. RESULTS: The ipsilateral lung V(50) (relative volume receiving more than 50% of the prescription dose) had a median value of 23.7% (range 10.8-35.1%) over the patient population. The corresponding median lung pneumonitis probability was 1.1% (range 0-14%). The median heart V(50) was 0.8% (range 0-19.1%) with a corresponding median cardiac mortality NTCP of 0.1% (range 0-5.7%). These results compare well with the predictions of our previous CT-studies. There is a significant reduction in dose to the left anterior descending coronary artery for the enhanced end-inspiration gating technique compared to the uncoached end-inspiration technique employed in the CT-studies. CONCLUSIONS: In a routine clinical practice involving adjuvant breast radiotherapy gated in an enhanced end-inspiration phase, remarkably low doses to organs at risk are observed. The corresponding cardiac and pulmonary complication risks are of the order of 1% and smaller.
U2 - 10.1016/j.radonc.2006.07.020
DO - 10.1016/j.radonc.2006.07.020
M3 - Journal article
C2 - 16905210
SN - 0167-8140
VL - 80
SP - 257
EP - 262
JO - Radiotherapy & Oncology
JF - Radiotherapy & Oncology
IS - 2
ER -