منابع مشابه
Comparison of state-of-the-art atlas-based bone segmentation approaches from brain MR images for MR-only radiation planning and PET/MR attenuation correction
Introduction: Magnetic Resonance (MR) imaging has emerged as a valuable tool in radiation treatment (RT) planning as well as Positron Emission Tomography (PET) imaging owing to its superior soft-tissue contrast. Due to the fact that there is no direct transformation from voxel intensity in MR images into electron density, itchr('39')s crucial to generate a pseudo-CT (Computed Tomography) image ...
متن کاملCompensation of brain shift during surgery using non-rigid registration of MR and ultrasound images
Background: Surgery and accurate removal of the brain tumor in the operating room and after opening the scalp is one of the major challenges for neurosurgeons due to the removal of skull pressure and displacement and deformation of the brain tissue. This displacement of the brain changes the location of the tumor relative to the MR image taken preoperatively. Methods: This study, which is done...
متن کاملGenerating the synthetic CT (sCT) and synthetic MR (sMR: sT1w/sT2w) images of the brain using atlas based method
Introduction: Radiation therapy planning (RTP) is one of the clinical applications in which both CT scan and MRI are used. MR and CT images are applied to determine the target volume and calculation of dose distribution, respectively. In addition, using two imaging modalities increases the department workload and cost. In this study, an algorithm was presented to create synthet...
متن کاملMeasuring temporal morphological changes robustly in brain MR images via 4-dimensional template warping.
Robustly measuring subtle longitudinal brain changes is a major challenge in computational neuroanatomy. This paper describes a method for measuring temporal morphological brain changes, by means of a 4-dimensional image warping mechanism. Longitudinal stability is achieved by considering all temporal MR images of an individual simultaneously, rather than by individually warping a template to a...
متن کاملSketch-based warping of RGBN images
1524-0703/$ see front matter 2010 Elsevier Inc doi:10.1016/j.gmod.2010.11.001 ⇑ Corresponding author. Fax: +55 21 25295067. E-mail addresses: [email protected] (T. Pereira), Brazil), [email protected] (I. Macêdo), smcosta@ucalg [email protected] (L.H. de Figueiredo), [email protected] (L While current image deformation methods are careful in making the new geometry seem right, little attention has been given...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2000
ISSN: 1053-1807,1522-2586
DOI: 10.1002/1522-2586(200009)12:3<417::aid-jmri7>3.0.co;2-x