Results 51 to 60 of about 27,465 (240)

Beyond geometrical overlap: a Dosimetrical Evaluation of automated volumes Adaptation (DEA) in head and neck replanning

Technical Innovations & Patient Support in Radiation Oncology, 2017
Introduction: Automated target volumes adaptation could be useful in H&N replanning, but its dosimetric impact has not been analyzed. Primary aim of this investigation is dose coverage assessment in fully automated and edited PTV adaptation settings ...
Gian Carlo Mattiucci, Luca Boldrini, Lorenzo Placidi, Luigi Azario, Nicola Dinapoli, Giuditta Chiloiro, Danilo Pasini, Danila Piccari, Maria Antonietta Gambacorta, Mario Balducci, Giovanna Mantini, Vincenzo Valentini   +11 more
doaj   +1 more source

Comparative Evaluation of Four Stereotactic Radiosurgery Planning Approaches for Treatment of Posterior Choroidal Melanoma

Journal of Medical Radiation Sciences, EarlyView.
This study evaluated four stereotactic radiosurgery planning approaches for posterior choroidal melanoma (CM). Analysis of thirteen CM cases resulted in a clinically meaningful reduction in dose to the brain for Brainlab Elements modulated arcs (BE) and Varian Eclipse HyperArc modulated arcs (HA) compared to Brainlab iPlan dynamic conformal arc therapy
Robert Nigro, Kenton Thompson, Cathy Markham, Adam U. Yeo, Daniel Sapkaroski, Claire Phillips   +5 more
wiley   +1 more source

Congenital kidney malformation: Computed tomography and scintigraphy findings of renal reversed rotation

Radiology Case Reports, 2019
Renal reversed rotation is a congenital abnormality due to anomalous kidney rotation around its long axis, resulting in faced laterally renal hilum; this condition is associated with several vascular variants.
Francesca Di Giuliano, MD, Eliseo Picchi, MD, Adriano Lacchè, MD, Alessio Bozzi, MD, Yuri Cavaleri, MD, Francesco Garaci, MD, PhD, Roberto Floris, MD, PhD   +6 more
doaj   +1 more source

Feasibility of a simultaneously integrated boost concept for hypofractionated stereotactic radiotherapy of unresected brain metastases

Radiation Oncology, 2023
Background In stereotactic radiotherapy, dose is prescribed to an isodose surrounding the planning target volume (PTV). However, the desired dose inhomogeneity inside the PTV leaves the specific dose distribution to the gross tumor volume (GTV ...
Christine Kornhuber, Stephan Ensminger, Patrick Hübsch, Martin Janich, Chris Andre Leucht, Dirk Vordermark, Christian T. Dietzel   +6 more
doaj   +1 more source

3D Printing a Clinically Available Solution From Plaster‐Based Positives in Superficial Radiation Therapy

Journal of Medical Radiation Sciences, EarlyView.
This study compares two techniques for creating lead shielding masks to replace the current process for superficial/orthovoltage facial radiotherapy: Plaster Cast Positive Mould (PCPM), CT Scanned 3D Print (CT3DP), and Optical Scan 3D Print (OS3DP). CT3DP was found to be more accurate and preferred over OS3DP.
Rory Hartley, Linda Bell, Toby Lowe, Jeremy Booth, Sarah Bergamin, Dasantha Jayamanne, Ryan Brown   +6 more
wiley   +1 more source

Functional Imaging for Identification of Functionally Critical Brain Regions to Spare in Glioma Radiation Therapy Planning: A Systematic Review

Journal of Medical Radiation Sciences, EarlyView.
This review highlights the role of functional imaging in sparing cognitive brain regions during glioma radiotherapy. It shows promising dose reduction without compromising target coverage, but evidence remains limited, requiring standardisation and prospective validation.
Li Wen Yeo, John T. Ryan
wiley   +1 more source

Prone Breast Radiotherapy on the MR‐Linac: A Technical Note on Skin‐Couch Contact Dose Effects

Journal of Medical Radiation Sciences, EarlyView.
This retrospective planning study evaluated the dosimetric effects of skin‐couch contact during prone APBI on a 1.5 T MR‐Linac by comparing treatment plans calculated with and without a magnetic field. While the presence of the magnetic field increased overall superficial skin dose, it consistently reduced dose at the skin‐couch contact region ...
Kerryn Brown, Drew Smith, Kristie Matthews, Jessica Lye, Leah McDermott, Michael Chao, Farshad Foroudi, Caroline Wright   +7 more
wiley   +1 more source

Spontaneous Ureteral Rupture Diagnosis and Treatment

Case Reports in Radiology, 2013
Rupture of the urinary collecting system associated with perinephric or retroperitoneal extravasation of the urine is an unusual condition and it is commonly associated with renal obstructing disease.
E. Pampana, S. Altobelli, M. Morini, A. Ricci, S. D'Onofrio, G. Simonetti   +5 more
doaj   +1 more source

Circular collimator arc versus dynamic conformal arc treatment planning for linac-based stereotactic radiosurgery of an intracranial small single lesion: a perspective of lesion asymmetry

Radiation Oncology, 2019
Background Although circular collimator arcs (CCA) and dynamic conformal arcs (DCA) are commonly used linear accelerator-based treatment planning techniques for intracranial stereotactic radiosurgery (SRS) of a small single lesion, these two techniques ...
Yongsook C. Lee, Yongbok Kim
doaj   +1 more source

Intrafraction motion and impact of margin reduction for MR‐Linac online adaptive radiotherapy for pancreatic cancer treatments

Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 17-24, March 2025.
This analysis included quantification of intrafraction motion in pancreas stereotactic ablative radiotherapy treated on the MR‐Linac, leading to the development of adjusted (PTV) margins. Intrafraction motion indicated an average target displacement of 1–3 mm, resulting in an adjusted PTV margin of 2 mm in the right–left and superior–inferior ...
Ashleigh Fasala, Madeline Carr, Yolanda Surjan, Parmoun Daghigh, Jeremy de Leon, Abbey Burns, Vikneswary Batumalai   +6 more
wiley   +1 more source