Radiothérapie des cancers du poumon : le blocage en inspiration sous contrôle spirométrique

Garcia, R.; Oozeer, Raish; Thanh, H Le; Chastel, D.; Doyen, J.; Chauvet, B.; Reboul, F.

doi:10.1016/s1278-3218(01)00132-9

Cited by 28 publications

(7 citation statements)

References 34 publications

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“…This system is spirometer-based and ensures a forced BH. The forced BH experience is uncomfortable for most patients [7, 30, 31]. The system registers the volume inhaled/exhaled by the patient with high reproducibility [32].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of a 3D surface imaging system for deep inspiration breath-hold patient positioning and intra-fraction monitoring

et al. 2019

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Purpose To determine the accuracy of a surface guided radiotherapy (SGRT) system for positioning of breast cancer patients in breath-hold (BH) with respect to cone-beam computed tomography (CBCT). Secondly, to evaluate the thorax position stability during BHs with SGRT, when using an air-volume guidance system. Methods and materials Eighteen left-sided breast cancer patients were monitored with SGRT during CBCT and treatment, both in BH. CBCT scans were matched on the target volume and the patient surface. The setup error differences were evaluated, including with linear regression analysis. The intra-fraction variability and stability of the air-volume guided BHs were determined from SGRT measurements. The variability was determined from the maximum difference between the different BH levels within one treatment fraction. The stability was determined from the difference between the start and end position of each BH. Results SGRT data correlated well with CBCT data. The correlation was stronger for surface-to-CBCT (0.61) than target volume-to-CBCT (0.44) matches. Systematic and random setup error differences were ≤ 2 mm in all directions. The 95% limits of agreement (mean ± 2SD) were 0.1 ± 3.0, 0.6 ± 4.1 and 0.4 ± 3.4 mm in the three orthogonal directions, for the surface-to-CBCT matches. For air-volume guided BHs, the variability detected with SGRT was 2.2, 2.8 and 2.3 mm, and the stability − 1.0, 2.1 and 1.5 mm, in three orthogonal directions. Furthermore, the SGRT system could detect unexpected patient movement, undetectable by the air-volume BH system. Conclusion With SGRT, left-sided breast cancer patients can be positioned and monitored continuously to maintain position errors within 5 mm. Low intra-fraction variability and good stability can be achieved with the air-volume BH system, however, additional patient position information is available with SGRT, that cannot be detected with air-volume BH systems.

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Section: Discussionmentioning

confidence: 99%

Evaluation of a 3D surface imaging system for deep inspiration breath-hold patient positioning and intra-fraction monitoring

et al. 2019

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“…The involuntary breath‐hold uses active breathing control to manage patients' breath‐hold with a significant reduction of heart dose (5) . The voluntary breath‐hold technique, using a spirometer with video guidance (SDX, Muret, France), (6) has also shown promising results in lung cancer; however, there are only limited data for left‐sided breast cancer. This study reports our initial clinical experience in applying this spirometry‐based system to deliver whole‐breast radiation to patients with left‐sided breast cancer during voluntary DIBH.…”

Section: Introductionmentioning

confidence: 99%

Clinical experience using a video‐guided spirometry system for deep inhalation breath‐hold radiotherapy of left‐sided breast cancer

Yang

McKenzie

Burnison

et al. 2015

J Applied Clin Med Phys

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The purpose was to report clinical experience of a video‐guided spirometry system in applying deep inhalation breath‐hold (DIBH) radiotherapy for left‐sided breast cancer, and to study the systematic and random uncertainties, intra‐ and interfraction motion and impact on cardiac dose associated with DIBH. The data from 28 left‐sided breast cancer patients treated with spirometer‐guided DIBH radiation were studied. Dosimetric comparisons between free‐breathing (FB) and DIBH plans were performed. The distance between the heart and chest wall measured on the digitally reconstructed radiographs (DRR) and MV portal images, dDRR(DIBH) and dport(DIBH), respectively, was compared as a measure of DIBH setup uncertainty. The difference (Δd) between dDRR(DIBH) and dport(DIBH) was defined as the systematic uncertainty. The standard deviation of Δd for each patient was defined as the random uncertainty. MV cine images during radiation were acquired. Affine registrations of the cine images acquired during one fraction and multiple fractions were performed to study the intra‐ and interfraction motion of the chest wall. The median chest wall motion was used as the metric for intra‐ and interfraction analysis. Breast motions in superior–inferior (SI) direction and “AP” (defined on the DRR or MV portal image as the direction perpendicular to the SI direction) are reported. Systematic and random uncertainties of 3.8 mm and 2 mm, respectively, were found for this spirometer‐guided DIBH treatment. MV cine analysis showed that intrafraction chest wall motions during DIBH were 0.3 mm in “AP” and 0.6 mm in SI. The interfraction chest wall motions were 3.6 mm in “AP” and 3.4 mm in SI. Utilization of DIBH with this spirometry system led to a statistically significant reduction of cardiac dose relative to FB treatment. The DIBH using video‐guided spirometry provided reproducible cardiac sparing with minimal intra‐ and interfraction chest wall motion, and thus is a valuable adjunct to modern breast treatment techniques.PACS number: 87.55.kh, 87.55.ne, 87.55.tg

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“…Cette « épargne » des tissus sains est possible en respectant des critères dosimétriques stricts comme un V20 < 35 % pour le poumon (V20 : volume pulmo- simulation virtuelle à l'aide de scanners dosimétriques en coupes fines (2,5 à 3 mm), reposant sur une balistique complexe optimisée grâce à une dosimétrie tri-dimensionnelle, elles permettent de délivrer une dose plus élevée au volume tumoral en maîtrisant mieux le risque de toxicité rédhibitoire [18]. S o c i n s k i e t a l .…”

Section: Optimisation De La Radiothérapieunclassified

Chemo-radiotherapy in unresectable, locally advanced NSCLC: state of research

et al. 2005

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Radiothérapie des cancers du poumon : le blocage en inspiration sous contrôle spirométrique

Cited by 28 publications

References 34 publications

Evaluation of a 3D surface imaging system for deep inspiration breath-hold patient positioning and intra-fraction monitoring

Evaluation of a 3D surface imaging system for deep inspiration breath-hold patient positioning and intra-fraction monitoring

Clinical experience using a video‐guided spirometry system for deep inhalation breath‐hold radiotherapy of left‐sided breast cancer

Chemo-radiotherapy in unresectable, locally advanced NSCLC: state of research

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