Characterization of 3D geometric distortion of magnetic resonance imaging scanners commissioned for radiation therapy planning

Magnetic Resonance Imaging
Tarraf TorfehNoora Al-Hammadi

Abstract

To develop a method for the assessment and characterization of 3D geometric distortion as part of routine quality assurance for MRI scanners commissioned for Radiation Therapy planning. In this study, the in-plane and through-plane geometric distortions on a 1.5T GE MRI-SIM unit are characterized and the 2D and 3D correction algorithms provided by the vendor are evaluated. We used a phantom developed by GE Healthcare that covers a large field of view of 500mm, and consists of layers of foam embedded with a matrix of ellipsoidal markers. An in-house Java-based software module was developed to automatically assess the geometric distortion by calculating the center of each marker using the center of mass method, correcting of gross rotation errors and comparing the corrected positions with a CT gold standard data set. Spatial accuracy of typical pulse sequences used in RT planning was assessed (2D T1/T2 FSE, 3D CUBE, T1 SPGR) using the software. The accuracy of vendor specific geometric distortion correction (GDC) algorithms was quantified by measuring distortions before and after the application of the 2D and 3D correction algorithms. Our algorithm was able to accurately calculate geometric distortion with sub-pixel precision. Fo...Continue Reading

References

Jan 1, 1997·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·V S KhooM O Leach
Jul 6, 2004·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Andrew JankeDavid M Doddrell
Mar 31, 2005·Physics in Medicine and Biology·Simon J DoranMartin O Leach
Oct 13, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Elliot R McVeighKeith A Horvath
Mar 29, 2007·Medical Physics·Lesley N BaldwinB Gino Fallone
Oct 9, 2009·Medical Physics·Lesley N BaldwinB Gino Fallone
Jul 10, 2012·Magnetic Resonance Imaging·Uulke A van der HeidePhilippe Lambin
Mar 12, 2013·Cardiovascular and Interventional Radiology·Alessandro NapoliCarlo Catalano
May 22, 2013·The British Journal of Radiology·G P LineyA W Beavis
Feb 13, 2014·Australasian Physical & Engineering Sciences in Medicine·Amy WalkerLois Holloway

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Citations

Aug 16, 2016·Practical Radiation Oncology·Tyler M SeibertJona A Hattangadi-Gluth
May 13, 2017·Journal of Applied Clinical Medical Physics·Ryan G PriceCarri K Glide-Hurst
Feb 2, 2018·Journal of Applied Clinical Medical Physics·Tarraf TorfehNoora Al-Hammadi
Mar 25, 2018·Journal of Applied Clinical Medical Physics·Xinyuan Chen, Jianrong Dai
Sep 21, 2018·Nihon Hoshasen Gijutsu Gakkai zasshi·Atsuya FujuNorio Hayashi
Sep 13, 2018·Journal of Applied Clinical Medical Physics·Eric D MorrisCarri K Glide-Hurst
Jan 26, 2018·International Journal of Computer Assisted Radiology and Surgery·Max SiekmannJan Coburger
Mar 13, 2019·Journal of Applied Clinical Medical Physics·Fang LiuAlan B McMillan
Mar 7, 2019·Medical Physics·Siamak P Nejad-DavaraniCarri Glide-Hurst
Jun 20, 2019·Physics in Medicine and Biology·Steffen WeissCarri Glide-Hurst
Feb 3, 2018·Physics in Medicine and Biology·Amir M OwrangiCarri K Glide-Hurst
Jun 13, 2020·Physics in Medicine and Biology·Jordan M SlagowskiJihong Wang
Mar 25, 2020·Strahlentherapie und Onkologie : Organ der Deutschen Röntgengesellschaft ... [et al]·Florian PutzChristoph Bert
Jun 21, 2018·Radiological Physics and Technology·Yoshiyuki IshimoriHiraku Kawamura
Oct 20, 2020·Journal of Applied Clinical Medical Physics·Emil SchülerDimitre Hristov
Nov 20, 2020·Journal of Applied Clinical Medical Physics·Benjamin C LewisTaeho 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
Nov 11, 2020·Zeitschrift für medizinische Physik·Hatice Selcen DumluMarco Riboldi
Mar 18, 2020·Cancer radiothérapie : journal de la Société française de radiothérapie oncologique·A LargentH Saint-Jalmes
Apr 27, 2021·Physics and Imaging in Radiation Oncology·Jonathan J WyattHazel M McCallum
Jul 8, 2021·Journal of Applied Clinical Medical Physics·John NeylonMinsong Cao

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