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Prostate fiducial marker detection with the use of multi-parametric magnetic resonance imaging
Catarina Dinis Fernandes, Cuong V. Dinh, Marcel J. Steggerda, Leon C. ter Beek, Milena Smolic, Laurens D. van Buuren, Floris J. Pos, Uulke A. van der Heide Physics and Imaging in Radiation Oncology Volume 1, Pages (January 2017) DOI: /j.phro Copyright © 2017 The Authors Terms and Conditions
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Fig. 1 Model pipeline in one representative slice. (A–F) CT and all MRI sequences. The ground truth map (G) was constructed based on the information from the CT scan and delineations. (H–J) Different model outcomes; all models correctly identify the two markers present on this slice. Model results are prior to cluster selection. Physics and Imaging in Radiation Oncology 2017 1, 14-20DOI: ( /j.phro ) Copyright © 2017 The Authors Terms and Conditions
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Fig. 2 Model pipeline in one representative slice. (A–F) CT and all MRI sequences. The ground truth map (G) was constructed based on the information from the CT scan and delineations. (H–J) Different model outcomes. One of the markers is visible on T1w, T2w, B0 mag and marginally visible on SWI (filled arrow head) but not on the bTFE sequence (open arrow head). This marker could not be identified on the bTFE model; the mp-MRI and mp-MRI+bTFE models successfully detect the two markers. Model results are prior to cluster selection. Physics and Imaging in Radiation Oncology 2017 1, 14-20DOI: ( /j.phro ) Copyright © 2017 The Authors Terms and Conditions
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Fig. 3 A) Histogram of the registration errors (mm) between CT and MRI in x, y and z directions; B) Accuracy of the mp-MRI+bTFE model in three spatial directions (x, y, z). GT – ground truth marker location based on segmented CT image; CM – center of mass of the cluster identified by the model. The plots represent the differences between the two coordinates for each separate marker. Physics and Imaging in Radiation Oncology 2017 1, 14-20DOI: ( /j.phro ) Copyright © 2017 The Authors Terms and Conditions
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