Impact of dosimetric differences between CT and MRI derived target volumes for external beam cervical cancer radiotherapy.

Adult Female Humans Magnetic Resonance Imaging Organs at Risk / radiation effects Radiometry Radiotherapy Dosage Radiotherapy Planning, Computer-Assisted Radiotherapy, Intensity-Modulated / methods Tomography, X-Ray Computed Uterine Cervical Neoplasms / diagnostic imaging

Journal

The British journal of radiology
ISSN: 1748-880X
Titre abrégé: Br J Radiol
Pays: England
ID NLM: 0373125

Informations de publication

Date de publication:
01 Oct 2020
Historique:
pubmed: 10 6 2020
medline: 7 10 2020
entrez: 10 6 2020
Statut: ppublish

Résumé

The use of MRI is becoming more prevalent in cervical cancer external beam radiotherapy (RT). The aim of this study was to investigate the impact of dosimetric differences between CT and MRI-derived target volumes for cervical cancer external beam RT. An automated planning technique for volumetric modulated arc therapy was developed. Two automated planning plans were generated for 18 cervical cancer patients where planning target volumes (PTVs) were generated based on CT or MRI data alone. Dose metrics for planning target volumes and organs at risk (OARs) were compared to analyse any differences based on imaging modality. All treatment plans were clinically acceptable. Bladder doses (V40) were lower in MRI-based plans ( The dosimetric differences of CT- and MRI-based contouring variability for this study was small. CT remains the standard imaging modality for volume delineation for these patients. This is the first study to evaluate the dosimetric implications of imaging modality on target and OAR doses in cervical cancer external beam RT.

Identifiants

DOI: 10.1259/bjr.20190564 PMID: 32516544 PMC: PMC7548354
pubmed: 32516544
doi: 10.1259/bjr.20190564
pmc: PMC7548354
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

20190564

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Auteurs

Vikneswary Batumalai (V)

Department of Radiation Oncology, South Western Sydney Local Health District, New South Wales, Australia.
Ingham Institute for Applied Medical Research, New South Wales, Australia.
South Western Clinical School, University of New South Wales, New South Wales, Australia.

Siobhan Burke (S)

Department of Radiation Oncology, South Western Sydney Local Health District, New South Wales, Australia.

Dale Roach (D)

Ingham Institute for Applied Medical Research, New South Wales, Australia.
South Western Clinical School, University of New South Wales, New South Wales, Australia.

Karen Lim (K)

Department of Radiation Oncology, South Western Sydney Local Health District, New South Wales, Australia.
South Western Clinical School, University of New South Wales, New South Wales, Australia.

Glen Dinsdale (G)

Department of Radiation Oncology, South Western Sydney Local Health District, New South Wales, Australia.

Michael Jameson (M)

Department of Radiation Oncology, South Western Sydney Local Health District, New South Wales, Australia.
Ingham Institute for Applied Medical Research, New South Wales, Australia.
South Western Clinical School, University of New South Wales, New South Wales, Australia.
Centre for Medical Radiation Physics, University of Wollongong, New South Wales, Australia.

Cesar Ochoa (C)

Department of Radiation Oncology, South Western Sydney Local Health District, New South Wales, Australia.

Jacqueline Veera (J)

Peter MaCallum Cancer Centre, Victoria, Australia.

Lois Holloway (L)

Department of Radiation Oncology, South Western Sydney Local Health District, New South Wales, Australia.
Ingham Institute for Applied Medical Research, New South Wales, Australia.
South Western Clinical School, University of New South Wales, New South Wales, Australia.
Centre for Medical Radiation Physics, University of Wollongong, New South Wales, Australia.
Institute of Medical Physics, School of Physics, University of Sydney, New South Wales, Australia.

Shalini Vinod (S)

Department of Radiation Oncology, South Western Sydney Local Health District, New South Wales, Australia.
Ingham Institute for Applied Medical Research, New South Wales, Australia.
South Western Clinical School, University of New South Wales, New South Wales, Australia.

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Classifications MeSH

questionsmedicales.fr › Personnes › Tranches d'âge › Adulte › Impact of dosimetric differences between CT...
questionsmedicales.fr › Eucaryotes › Animaux › Chordés › Vertébrés › Mammifères › Eutheria › Primates › Haplorhini › Catarrhini › Hominidae › Humains › Impact of dosimetric differences between CT...
questionsmedicales.fr › Diagnostic › Techniques et procédures diagnostiques › Imagerie diagnostique › Tomographie › Imagerie par résonance magnétique › Impact of dosimetric differences between CT...
questionsmedicales.fr › Régions du corps › Organes à risque › Impact of dosimetric differences between CT...
questionsmedicales.fr › Techniques d'investigation › Radiométrie › Impact of dosimetric differences between CT...
questionsmedicales.fr › Thérapeutique › Radiothérapie › Dosimétrie en radiothérapie › Impact of dosimetric differences between CT...
questionsmedicales.fr › Sciences de l'information › Informatique › Informatique médicale › Applications de l'informatique médicale › Prise de décision assistée par ordinateur › Thérapie assistée par ordinateur › Radiothérapie assistée par ordinateur › Planification de radiothérapie assistée par ordinateur › Impact of dosimetric differences between CT...
questionsmedicales.fr › Sciences de l'information › Informatique › Informatique médicale › Applications de l'informatique médicale › Prise de décision assistée par ordinateur › Thérapie assistée par ordinateur › Radiothérapie assistée par ordinateur › Radiothérapie conformationnelle › Radiothérapie conformationnelle avec modulation d'intensité › Impact of dosimetric differences between CT...
questionsmedicales.fr › Diagnostic › Techniques et procédures diagnostiques › Imagerie diagnostique › Tomographie › Tomographie à rayons X › Tomodensitométrie › Impact of dosimetric differences between CT...
questionsmedicales.fr › Maladies urogénitales › Tumeurs de l'appareil urogénital › Tumeurs de l'appareil génital féminin › Tumeurs de l'utérus › Tumeurs du col de l'utérus › Impact of dosimetric differences between CT...