1. Image-guided Adaptive Radiotherapy for Bladder Cancer
- Author
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Jeff M. Michalski, Boris R. Tocco, Hanneke J.M. Meijer, Robert Jan Smeenk, Adham Hijab, Brian C. Baumann, I. Hanson, Christina Junker Nyborg, Anders Bertelsen, Shaista Hafeez, and G. Smith
- Subjects
Cone beam computed tomography ,medicine.medical_specialty ,medicine.medical_treatment ,Planning target volume ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Medical physics ,image guidance ,Adaptive radiotherapy ,Image-guided radiation therapy ,Bladder cancer ,medicine.diagnostic_test ,business.industry ,Radiotherapy Planning, Computer-Assisted ,CBCT ,Radiotherapy Dosage ,Magnetic resonance imaging ,Cone-Beam Computed Tomography ,medicine.disease ,Radiation therapy ,adaptive radiotherapy ,Urinary Bladder Neoplasms ,Oncology ,Integral dose ,030220 oncology & carcinogenesis ,bladder cancer ,Radiotherapy, Intensity-Modulated ,Adaption ,business ,MRI ,Radiotherapy, Image-Guided - Abstract
Technological advancement has facilitated patient-specific radiotherapy in bladder cancer. This has been made possible by developments in image-guided radiotherapy (IGRT). Particularly transformative has been the integration of volumetric imaging into the workflow. The ability to visualise the bladder target using cone beam computed tomography and magnetic resonance imaging initially assisted with determining the magnitude of inter- and intra-fraction target change. It has led to greater confidence in ascertaining true anatomy at each fraction. The increased certainty of dose delivered to the bladder has permitted the safe reduction of planning target volume margins. IGRT has therefore improved target coverage with a reduction in integral dose to the surrounding tissue. Use of IGRT to feed back into plan and dose delivery optimisation according to the anatomy of the day has enabled adaptive radiotherapy bladder solutions. Here we undertake a review of the stepwise developments underpinning IGRT and adaptive radiotherapy strategies for external beam bladder cancer radiotherapy. We present the evidence in accordance with the framework for systematic clinical evaluation of technical innovations in radiation oncology (R-IDEAL).
- Published
- 2021
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