ADVANTAGES OF USING DEEP INSPIRATION BREATH HOLD (DIBH) RADIATION METHODS DURING STEREOTACTIC RADIOTHERAPY (SBRT)

Abstract

Introduction. Tumor motion is one of the main challenge of lung stereotactic body. The purpose of the presented work is to show the need to use additional methods of controlling the patient's breathing amplitude in order to refuse the use of additional volumes of treatment.

Methods. Four patients were treated by the SBRT technique using a linear accelerator under the control of the C-RAD optical positioning system. The linear accelerator carried out irradiation using the VMAT technique as soon as the amplitude of the patient's breath fell within the predetermined gap of ±1 mm.

Results. The use of the Deep-inspiration breath-hold (DIBH) treatment method made it possible to abandon the use of additional volumes of irradiation, which reduced the dose load on healthy tissues.

Conclusions. Lung SBRT in DIBH with C-RAD optical system proved reproducibility of the position with a very small gap, which made it possible to abandon additional treatment volumes (ITV) and reduce the lung dose.

References

Nguyen, D., Reinoso, R., Farah, J., Yossi, S., Lorchel, F., Passerat, V., Louet, E., Pouchard, I., Khodri, M., & Barbet, N. (2023, May 13). Reproducibility of surface-based deep inspiration breath-hold technique for lung stereotactic body radiotherapy on a closed-bore gantry linac. Physics and Imaging in Radiation Oncology, 26, 100418 https://pubmed.ncbi.nlm.nih.gov/37252251

Videtic, G.M., & Stephans, K.L. (2010). The Role of Stereotactic Body Radiotherapy in the Management of Non-Small Cell Lung Cancer: An Emerging Standard for the Medically Inoperable Patient? Current oncology reports, 12, 235–241. https://link.springer.com/article/10.1007/s11912-010-0108-1