Three-dimensional evaluation of intra- and interfraction immobilization of lung and chest wall using active breathing control: A reproducibility study with breast cancer patients

Remouchamps, Vincent; Letts, Nicola; Yan, Di; Vicini, Frank A.; Moreau, M.; Zielinski, Julie; Liang, Jian; Kestin, Larry L.; Martínez, Álvaro; Wong, John W.

doi:10.1016/s0360-3016(03)00710-7

Cited by 93 publications

(63 citation statements)

References 33 publications

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“…Any difference in volume held may result in a variation of tumour position. With a flow rate of 2 l/s there was a 300ml overshoot for 1.8l inspired volume but this was reduced for a rate of 1 l/s [29].…”

Section: Discussionmentioning

confidence: 95%

“…The potential of using ABC to reduce motion has been explored by comparing CT scans with and without ABC [8,9,7]. ABC has been used for treatment of Hodgkin's disease [10] and breast cancer [11] and was well tolerated. It has been speculated that the use of ABC during radical radiotherapy for lung cancer would be too demanding for patients [12,13,14].…”

Section: Introductionmentioning

confidence: 99%

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Feasibility of the use of the Active Breathing Co ordinator™ (ABC) in patients receiving radical radiotherapy for non-small cell lung cancer (NSCLC)

McNair

Brock

Symonds-Tayler

et al. 2009

Radiotherapy and Oncology

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Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Feasibility of the use of the Active Breathing Co ordinator™ (ABC) in patients receiving radical radiotherapy for non-small cell lung cancer (NSCLC)

McNair

Brock

Symonds-Tayler

et al. 2009

Radiotherapy and Oncology

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“…This value is related to breast attachment to external chest walls, large body movement, and significant changes in irradiation positions caused by different rising degrees of the arms. Respiratory movement of patients will cause significant movement of the target region 35, 36. All of these factors should be considered in IMRT design.…”

Section: Discussionmentioning

confidence: 99%

Dosimetric comparison of three intensity‐modulated radiation therapies for left breast cancer after breast‐conserving surgery

Zhang

Xie

et al. 2018

J Applied Clin Med Phys

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PurposeThis study aimed to evaluate dosimetric differences of intensity‐modulated radiation therapy (IMRT) in target and normal tissues after breast‐conserving surgery.MethodsIMRT five‐field plan I, IMRT six‐field plan II, and field‐in‐field–direct machine parameter optimization–IMRT plan III were designed for each of the 50 patients. One‐way analysis of variance was performed to compare differences, and P < 0.05 was considered statistically significant.ResultsHomogeneity index of plan III is lower than those of plans I and II. No difference was identified in conformity index of targets. Plan I exhibited difference in mean dose (D mean) for the heart (P < 0.05). Plan I featured smaller irradiation dose volumes in V 5, V 20 (P < 0.05) of the left lung than II. Plan I exhibited significantly higher V 5 in the right lung than plans II and III (P < 0.05). Under plan I, irradiation dose at V 5 in the right breast is higher than that in plans II and III. Patients in plan III presented less total monitor unit and total treatment time than those in plans I and II (P < 0.05).ConclusionIMRT six‐field plans II, and field‐in‐field–direct machine parameter optimization–IMRT plans III can reduce doses and volumes to the lungs and heart better while maintaining satisfying conformity index and homogeneity index of target. Nevertheless, plan II neglects target movements caused by respiration. In the same manner, plan III can substantially reduce MU and shorten patient treatment time. Therefore, plan III, which considers target movement caused by respiration, is a more practical radiation mode.

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“…Los métodos para el control del movimiento del tumor, a menudo, requieren una participación activa del paciente y del oncólogo radioterápico que participa en dicho tratamiento [6][7][8][9] . Este método no suele tolerarse bien por aquellos pacientes con una función pulmonar deficiente, hecho que ocurre en la mayoría de los pacientes con cáncer de pulmón.…”

Section: Técnicas De Tratamiento En Los Tumores Móvilesunclassified

Radiotherapy of mobile tumors

Sola

Martínez-López

Rico

et al. 2009

An Sist Sanit Navar

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RESUMENEn el presente trabajo, se detallan algunas cuestiones relacionadas con el manejo del tratamiento con radioterapia de los tumores móviles, es decir, aquellos que se desplazan con los movimientos respiratorios, integrando el movimiento en el plan de tratamiento. Este hecho complica la administración de dosis altas de radioterapia ya que, en estos casos, el margen de radiación debe ser más amplio de lo que el tumor en sí exige, suponiendo un mayor riesgo para el tejido sano circundante. Sin embargo, las nuevas tecnologías ofrecen una alternativa en estos casos, como son el traking y el gating respiratorio en radioterapia (RT), es decir, la sincronización del tratamiento con el movimiento respiratorio.En el gating capturamos el tumor y demás órganos de riesgo en un momento determinado del ciclo respiratorio, mientras que en el traking realizamos un "rastreo" del tumor y de los órganos de riesgo a lo largo del ciclo respiratorio, siendo entonces fundamental contar con una buena adquisición de imágenes y una correlación de las mismas con cada fase del ciclo respiratorio.Los tumores en los que más se han utilizado estas estrategias son los de pulmón, mama y linfomas y con menos frecuencia en algunos abdominales como páncreas, hí-gado y próstata. Palabras clave. Tumores móviles. TC-4D. Gating. Traking. ABSTRACTIn this article we detail some questions related to managing the treatment of mobile tumors, that is, those tumors that shift with respiratory movements, integrating movement into the plan of treatment. This fact complicates the administration of high doses of radiotherapy since, in such cases, the radiation margin must be wider than that required by the tumor itself, representing a greater risk to surrounding healthy tissue. However, the new technologies offer an alternative in these cases, such as tracking and respiratory gating in radiotherapy (RT), that is, the synchronization of treatment with respiratory movement.In gating we capture the tumor and other organs at risk at a specific moment in the breathing cycle, while in tracking we trace the tumor and the organs at risk throughout the breathing cycle. It is therefore essential to obtain good images and to correlate them with each phase of the breathing cycle.The tumors with which these strategies have been most employed are those of the lung, breast and lymphomas, and less frequently with some abdominal tumors such as pancreas, liver and prostate.

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Three-dimensional evaluation of intra- and interfraction immobilization of lung and chest wall using active breathing control: A reproducibility study with breast cancer patients

Cited by 93 publications

References 33 publications

Feasibility of the use of the Active Breathing Co ordinator™ (ABC) in patients receiving radical radiotherapy for non-small cell lung cancer (NSCLC)

Feasibility of the use of the Active Breathing Co ordinator™ (ABC) in patients receiving radical radiotherapy for non-small cell lung cancer (NSCLC)

Dosimetric comparison of three intensity‐modulated radiation therapies for left breast cancer after breast‐conserving surgery

Radiotherapy of mobile tumors

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