Adaptive replanning using cone beam CT for deformation of original CT simulation.
Adaptive radiotherapy (ART) < radiation therapy
deformable registration < radiation therapy
general < discipline
head and neck < clinical site
medical imaging < general
palliative < general
radiotherapy (radiation therapy) < discipline
Journal
Journal of medical radiation sciences
ISSN: 2051-3909
Titre abrégé: J Med Radiat Sci
Pays: United States
ID NLM: 101620352
Informations de publication
Date de publication:
Jun 2022
Jun 2022
Historique:
revised:
16
08
2021
received:
05
01
2021
accepted:
03
09
2021
pubmed:
28
10
2021
medline:
7
6
2022
entrez:
27
10
2021
Statut:
ppublish
Résumé
During a course of radiation therapy, anatomical changes such as a decrease in tumour size or weight loss can trigger the need for repeating a computed tomography (CT) simulation scan in order to generate a new treatment plan. This adaptive approach requires a separate appointment for an additional CT scan which generates additional burden, cost, and radiation exposure for patients. Here, we present a case of a head and neck cancer patient who required palliative radiation for a large neck mass. During treatment, he had a remarkable response which required a replan due to rapid tumour downsizing. In this case, we used a novel technique to avoid repeating the planning CT simulation by using a mid-treatment high-quality cone beam CT (CBCT) to deform the secondary image (plan CT) of the original planning CT and generate a new adapted treatment plan. This is the first report to our knowledge using a Halcyon CBCT to deform the original planning CT in order to generate a new radiation treatment plan, and this novel technique represents a new potential method of adaptive replanning for select patients.
Sections du résumé
BACKGROUND
BACKGROUND
During a course of radiation therapy, anatomical changes such as a decrease in tumour size or weight loss can trigger the need for repeating a computed tomography (CT) simulation scan in order to generate a new treatment plan. This adaptive approach requires a separate appointment for an additional CT scan which generates additional burden, cost, and radiation exposure for patients.
CASE PRESENTATION
METHODS
Here, we present a case of a head and neck cancer patient who required palliative radiation for a large neck mass. During treatment, he had a remarkable response which required a replan due to rapid tumour downsizing. In this case, we used a novel technique to avoid repeating the planning CT simulation by using a mid-treatment high-quality cone beam CT (CBCT) to deform the secondary image (plan CT) of the original planning CT and generate a new adapted treatment plan.
CONCLUSION
CONCLUSIONS
This is the first report to our knowledge using a Halcyon CBCT to deform the original planning CT in order to generate a new radiation treatment plan, and this novel technique represents a new potential method of adaptive replanning for select patients.
Identifiants
pubmed: 34704381
doi: 10.1002/jmrs.549
pmc: PMC9163453
doi:
Types de publication
Case Reports
Langues
eng
Sous-ensembles de citation
IM
Pagination
267-272Subventions
Organisme : NCATS NIH HHS
ID : KL2 TR001444
Pays : United States
Organisme : University of California, San Diego
ID : 1KL2TR001444
Informations de copyright
© 2021 The Authors. Journal of Medical Radiation Sciences published by John Wiley & Sons Australia, Ltd on behalf of Australian Society of Medical Imaging and Radiation Therapy and New Zealand Institute of Medical Radiation Technology.
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