An image-based method to synchronize cone-beam CT and optical surface tracking
| العنوان: | An image-based method to synchronize cone-beam CT and optical surface tracking |
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| المؤلفون: | Marco Riboldi, Aurora Fassi, Joël Schaerer, Guido Baroni, David Sarrut |
| المساهمون: | Dipartimento di Elettronica, Informazione e Bioingegneria (DEIB), Politecnico di Milano [Milan] (POLIMI), Imagerie Tomographique et Radiothérapie, Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Journal of Applied Clinical Medical Physics Journal of Applied Clinical Medical Physics, American Association of Physicists in Medicine, 2015, 16 (2), pp.117-128. ⟨10.1120/jacmp.v16i2.5152⟩ ResearcherID |
| بيانات النشر: | HAL CCSD, 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Male, Lung Neoplasms, Synchronizing, Tracking (particle physics), Synchronization, Imaging phantom, Optics, Position (vector), Optical surface, Calibration, Image Processing, Computer-Assisted, Humans, Radiology, Nuclear Medicine and imaging, Computer vision, Four-Dimensional Computed Tomography, Instrumentation, ComputingMilieux_MISCELLANEOUS, Image-guided radiation therapy, Aged, Physics, Aged, 80 and over, Radiation, business.industry, Phantoms, Imaging, Radiotherapy Planning, Computer-Assisted, Respiration, Cone-Beam Computed Tomography, Models, Theoretical, [INFO.INFO-TI]Computer Science [cs]/Image Processing [eess.IV], Radiographic Image Interpretation, Computer-Assisted, Female, Artificial intelligence, Dose Fractionation, Radiation, business, Algorithms, Radiotherapy, Image-Guided |
| الوصف: | The integration of in-room X-ray imaging and optical surface tracking has gained increasing importance in the field of image guided radiotherapy (IGRT). An essential step for this integration consists of temporally synchronizing the acquisition of X-ray projections and surface data. We present an image-based method for the synchronization of cone-beam computed tomography (CBCT) and optical surface systems, which does not require the use of additional hardware. The method is based on optically tracking the motion of a component of the CBCT/gantry unit, which rotates during the acquisition of the CBCT scan. A calibration procedure was implemented to relate the position of the rotating component identified by the optical system with the time elapsed since the beginning of the CBCT scan, thus obtaining the temporal correspondence between the acquisition of X-ray projections and surface data. The accuracy of the proposed synchronization method was evaluated on a motorized moving phantom, performing eight simultaneous acquisitions with an Elekta Synergy CBCT machine and the AlignRT optical device. The median time difference between the sinusoidal peaks of phantom motion signals extracted from the synchronized CBCT and AlignRT systems ranged between -3.1 and 12.9 msec, with a maximum interquartile range of 14.4 msec. The method was also applied to clinical data acquired from seven lung cancer patients, demonstrating the potential of the proposed approach in estimating the individual and daily variations in respiratory parameters and motion correlation of internal and external structures. The presented synchronization method can be particularly useful for tumor tracking applications in extracranial radiation treatments, especially in the field of patient-specific breathing models, based on the correlation between internal tumor motion and external surface surrogates. |
| اللغة: | English |
| تدمد: | 1526-9914 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f27e34d50d7b1be629e6fc8ac6401c2Test https://hal.archives-ouvertes.fr/hal-02060655Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....6f27e34d50d7b1be629e6fc8ac6401c2 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15269914 |
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