Authors examine the influence of metal implants on the distribution of ionizing radiation in tissue. In vivo measurements in a patient are seldom possible. The risk can be assessed with sufficient accuracy on the basis of various experimental dosimetric methods, histological changes in the irradiated volume and the tolerance to the physical stress, published in the available literature. The analysis shows that the risk of significant dose inhomogeneity or the treatment toxicity is minimal if mentioned principles are adhered to. Radiotherapy indications and dosage should not be markedly changed on the basis of the presence of metal in the irradiated volume.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Gadolinium oxide nanoparticles as a multimodal contrast enhancement agent for pre-clinical proton imaging.
Phys Med Biol
January 2025
Department of Medical Physics, Ludwig-Maximilians-Universität München, Am Coulombwall 1, Garching b. München, 85748, GERMANY.
Orthotopic tumor models in pre-clinical translational research are becoming increasingly popular, raising the demands on accurate tumor localization prior to irradiation. This task remains challenging both in X-ray and proton computed tomography (xCT and pCT, respectively), due to the limited contrast of tumor tissue compared to the surrounding tissue. We investigate the feasibility of gadolinium oxide nanoparticles as multimodal contrast enhancement agent for both imaging modalities.
View Article and Find Full Text PDFImpact of diaphragm motion on dosimetry in lower thoracic spine stereotactic body radiotherapy.
Phys Med
January 2025
Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.
Background And Purpose: Free-breathing computed tomography (FBCT) used in treatment planning for lower thoracic (Th8-Th12) spine stereotactic body radiotherapy (SBRT) can cause deviations between planned and irradiated doses due to diaphragm movement (DM). This study analyzed the dosimetric impact of DM on lower thoracic spine SBRT.
Materials And Methods: Data were collected from 19 patients who underwent FBCT and four-dimensional CT (4DCT) during the same session.
Effects of maximum dose on local control after stereotactic body radiotherapy for oligometastatic tumors of colorectal cancer.
PLoS One
January 2025
Colorectal Cancer Center, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.
This study aimed to identify radiotherapy dosimetric parameters related to local failure (LF)-free survival (LFFS) in patients with lung and liver oligometastases from colorectal cancer treated with stereotactic body radiotherapy (SBRT). We analyzed 75 oligometastatic lesions in 55 patients treated with SBRT between January 2014 and December 2021. There was no constraint or intentional increase in maximum dose.
View Article and Find Full Text PDFReinforcing treatment and evaluation workflow of stereotactic ablative body radiotherapy for refractory ventricular tachycardia.
Radiat Oncol J
December 2024
Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea.
Purpose: Cardiac radioablation is a novel, non-invasive treatment for ventricular tachycardia (VT), involving a single fractional stereotactic ablative body radiotherapy (SABR) session with a prescribed dose of 25 Gy. This complex procedure requires a detailed workflow and stringent dose constraints compared to conventional radiation therapy. This study aims to establish a consistent institutional workflow for single-fraction cardiac VT-SABR, emphasizing robust plan evaluation and quality assurance.
View Article and Find Full Text PDFRadiation therapy volumes after primary systemic therapy in breast cancer patients: an international EUBREAST survey.
Radiat Oncol J
December 2024
Department of Radiation Oncology, Iridium Netwerk, Wilrijk, Antwerp, Belgium.
Purpose: After primary systemic therapy (PST), agreement on the extent of locoregional therapy is lacking in breast cancer patients who convert from a node-positive to a node-negative status. The aim of this survey was to investigate radiation therapy approaches after PST according to different axillary surgical strategies and disease responses.
Materials And Methods: The European Breast Cancer Research Association of Surgical Trialists developed a web-based survey containing 39 questions on locoregional management based on clinical scenarios in initially node positive breast cancer patients undergoing PST.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!