Results 1 to 10 of about 2,696,728 (250)

4D-CT strain analysis for biomechanical characterization of COPD in patients undergoing radiotherapy planning: an exploratory study [PDF]

open access: yesFrontiers in Medicine
BackgroundChronic obstructive pulmonary disease (COPD) is characterized by progressive airflow limitation and altered pulmonary biomechanics. While conventional spirometry provides global functional information, it cannot assess regional heterogeneity ...
Qi Dai   +7 more
doaj   +2 more sources

CT-Based Quantification of Prostate Volume Change After LHRH-Agonist Androgen Deprivation: A Prospective, Three-Reader Study for Radiotherapy Planning [PDF]

open access: yesLife
Introduction: ADT is routinely combined with radiotherapy (RT) for intermediate- and high-risk prostate cancer. While prostate shrinkage may facilitate planning, prospective CT-based, patient-level estimates over short, workflow-relevant intervals are ...
Nicolás Feltes Benítez   +9 more
doaj   +2 more sources

Quantification of geometric uncertainties in image guided radiotherapy [PDF]

open access: yes, 2010
The aim of this thesis is to determine if the geometric uncertainties that are introduced into the image guided radiotherapy (IGRT) process by Cone Beam CT (CBCT) based IGRT equipment are sufficiently small that they do not pose a significant risk of ...
Sykes, Jonathan
core   +6 more sources

The prototype of EPID-based in vivo dose verification for VMAT treatments in patients with prostate cancer

open access: yesNowotwory, 2023
INTRODUCTION: The volumetric modulated arc therapy technique (VMAT) is now widely used in radiotherapy. Verifica­tion of the dose delivered to the patient is performed prior to the treatment (pre-treatment mode).
Krzysztof Ślosarek   +4 more
doaj   +1 more source

Lung volume irradiation procedures in patients with pneumonia during COVID-19 infection – physical aspects of treatment planning and dosimetry

open access: yesNowotwory, 2021
INTRODUCTION: The paper presents an original, used in our Institute, method of lung volume irradiation in patients with pneumonia during COVID-19 infection.
Krzysztof Ślosarek   +9 more
doaj   +1 more source

Static-junction craniospinal irradiation: verification of daily dose and long-term treatment results

open access: yesNowotwory, 2021
INTRODUCTION: The study was performed to evaluate the repeatability and effectiveness of the static-junctions image guided (SJIG) method of craniospinal irradiation. MATERIAL AND METHODS: An analysis of 40 treatment plans was performed.
Aleksandra Napieralska   +3 more
doaj   +1 more source

The choice of optimal radiotherapy technique for locally advanced maxillary carcinoma using 3d treatment planning system [PDF]

open access: yesVojnosanitetski Pregled, 2004
Aim. To compare the isodose distribution of three radiotherapy techniques for locally advanced maxillary sinus carcinoma and analyze the potential of three-dimensional (3D) conformal radiotherapy planning in order to determine the optimal technique for ...
Mileusnić Dušan
doaj   +1 more source

Rectal dosimetry in intracavitary applications of cervix carcinoma: Comparison of two methods [PDF]

open access: yesArchive of Oncology, 2002
BACKGROUND: Brachytherapy of cervix carcinoma often results in high doses to surrounding structures, such as rectum and bladder. Therefore, these organs should be closely monitored.
Baucal Milutin   +2 more
doaj   +1 more source

Development of a linear array for intracavitary in vivo dosimetry during external beam radiotherapy and brachytherapy. [PDF]

open access: yes, 2004
We present the details of a new linear array dosimeter consisting of a chain of semiconductors mounted on an ultra-thin (50 μm thick) flexible substrate and housed in an intracavitary catheter. The semiconductors, manufactured by NMRC Cork, have not been
Rogers, K.   +3 more
core   +4 more sources

Repeatability of MRI for radiotherapy planning for pelvic, brain, and head and neck malignancies

open access: yesFrontiers in Physics, 2022
Objectives: The objective of this study was to assess the repeatability of MRI for the purpose of radiotherapy treatment planning by considering the difference in registering MRI to MRI compared to registering CT and MRI.Methods: Fifty patients ...
Monique Y. Heinke   +9 more
doaj   +1 more source

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