Applicator reconstruction for HDR cervix treatment planning using images from 0.35 T open MR scanner

Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology
Rachel WillsPeter J Hoskin

Abstract

Magnetic resonance (MR) imaging is widely recognised as the modality of choice for imaging soft tissue such as the target volume and critical structures relevant to high dose rate (HDR) brachytherapy of the cervix. This work sets out to assess some of the issues faced when introducing this technique clinically compared to the more widely used computed tomography (CT). MR can be used either as the sole imaging modality, or in conjunction with CT. Distortion of the images produced by the MR scanner was assessed with a geometrical phantom. Distortion local to the titanium applicators, introduced by the susceptibility of the applicators themselves, was also measured. The technique used to reconstruct applicators is briefly described. An inter-operator study was performed to assess the variability of applicator reconstruction between operators when MR images are used alone to reconstruct the applicators. A 14-cm cube within which distortion was less than 2mm at all points was identified. The inter-operator study showed some variability in applicator reconstruction with both MR and CT (median MR/CT 1.3mm/0.9 mm, range 0-3.6mm/0-3.3mm). Inter-operator variation in planning target volume (PTV) V 100% and PTV D 90% for MR/CT was 6.1%/3....Continue Reading

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Citations

Jun 17, 2014·Seminars in Radiation Oncology·Kari TanderupSteven J Frank
Jul 10, 2014·The British Journal of Radiology·G KertzscherJ E Cygler
Jul 29, 2010·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Taran Paulsen HellebustUNKNOWN Gynaecological (GYN) GEC-ESTRO Working Group
Feb 9, 2010·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Kari TanderupJacob Christian Lindegaard
Mar 7, 2013·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Clare AndersonPeter J Hoskin
Oct 4, 2011·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Gustavo KertzscherKari Tanderup
Oct 4, 2011·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Christine Haie-MederRichard Pötter
May 12, 2016·Australasian Physical & Engineering Sciences in Medicine·Mahdi GhorbaniAli S Meigooni
May 4, 2013·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Steven PetitInger-Karine Kolkman-Deurloo
Apr 23, 2013·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Nicole NesvacilChristian Kirisits
Jun 1, 2019·Physics in Medicine and Biology·Reyhaneh NosratiGreg J Stanisz
Apr 14, 2016·Journal of Applied Clinical Medical Physics·Yongbok KimYusung Kim
Dec 12, 2018·Reports of Practical Oncology and Radiotherapy : Journal of Greatpoland Cancer Center in Poznań and Polish Society of Radiation Oncology·José RichartJosé Pérez-Calatayud
Oct 5, 2010·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Kari TanderupChristian Kirisits

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