Metallic implants and CT artefacts in the CTV area: Where are we in 2020?
| Autor: | J. Jacob, L. De Marzi, Loïc Feuvret, A. Amelot, Juliette Thariat, A. Rousselle, G. Mercy |
|---|---|
| Přispěvatelé: | Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut Curie [Paris] |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
medicine.medical_specialty
Image quality Computer science medicine.medical_treatment Iterative reconstruction Rendering (computer graphics) 03 medical and health sciences 0302 clinical medicine Neoplasms medicine Humans Radiology Nuclear Medicine and imaging Medical physics Radiation treatment planning Reduction (orthopedic surgery) [PHYS]Physics [physics] Particle therapy Radiotherapy Radiotherapy Dosage Dual-Energy Computed Tomography Prostheses and Implants Tumor Burden 3. Good health Radiation therapy Oncology 030220 oncology & carcinogenesis Artifacts Tomography X-Ray Computed |
| Zdroj: | Cancer/Radiothérapie Cancer/Radiothérapie, 2020, 24 (6-7), pp.658-666. ⟨10.1016/j.canrad.2020.06.022⟩ |
| Popis: | International audience; Radiation therapy (RT) is one of the main modalities of cancer treatment worldwide with computed tomography (CT), as the most commonly used imaging method for treatment planning system (TPS). Image reconstruction errors may greatly affect all the radiation therapy planning process, such as target delineation, dose calculation and delivery, particularly with particle therapy. Metallic implants, such as hip and spinal implants, and dental filling significantly deteriorate image quality. These hardware structures are often very complex in geometry leading to geometric complex artefacts in the clinical target volume (CTV) area, rendering the delineation of CTV challenging. In our review, we focus on the methods to overcome artefact consequences on CTV delineation: 1– medical approaches anticipating issues associated with imaging artefacts during preoperative multidisciplinary discussions while following standard recommendations; 2– common metal artefact reduction (MAR) methods such as manually override artefact regions, ballistics avoiding beam paths through implanted materials, megavoltage-CT (MVCT); 3– prospects with radiolucent implants, MAR algorithms and various methods of dual energy computed tomography (DECT). Despite substantial and broad evidence for their benefits, there is still no universal solution for cases involving implanted metallic devices. There is still a high need for research efforts to adapt technologies to our issue: “how do I accurately delineate the ideal CTV in a metal artefact area?” |
| Databáze: | OpenAIRE |
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