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WE‐C‐BRA‐02: Toward Real‐Time Optical Image‐Guided Radiotherapy
Author(s) -
Li S
Publication year - 2011
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.3613317
Subject(s) - computer vision , artificial intelligence , computer science , tracking (education) , medical imaging , radiation therapy , image registration , medical physics , match moving , shadow (psychology) , optical imaging , motion (physics) , medicine , image (mathematics) , radiology , optics , physics , psychology , pedagogy , psychotherapist
Looking ahead toward frameless, remote, and real‐time optical image‐guided radiotherapy, we will review the basic principles, mathematics, features, and clinical applications of most advanced optical imaging techniques being applied for live tracking of target motion and real‐time video‐guided repositioning of patients. We will theoretically examine marker‐based and surface‐based registration algorithms, their coordinate calibration and QA programs, measurements and corrections in 6‐degrees of freedom for image‐guided intracranial SRS and IMRT of superficial tumors, monitoring and interpretation of organ motion for gated RT and SBRT of NSCLC, and development in quantification and detection of surface deformation for IMRT of H&N and breast cancer. The advantages of fast imaging and registration, ease of use, and high accuracy and precision, and the drawbacks of correlating surface or markers with the internal target, image shadow artifacts, mismatching problems without robust applications or solutions, are demonstrated through clinical cases accrued in early clinical trials.