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Linear motion correction in three dimensions applied to dynamic gadolinium enhanced breast imaging
Author(s) -
Krishnan Sumati,
Chenevert Thomas L.,
Helvie Mark A.,
Londy Frank L.
Publication year - 1999
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.598576
Subject(s) - keyhole , magnetic resonance imaging , breast mri , dynamic contrast enhanced mri , dynamic imaging , subtraction , dynamic contrast , mammography , k space , data set , computer science , nuclear medicine , computer vision , artificial intelligence , radiology , materials science , medicine , image processing , breast cancer , mathematics , image (mathematics) , arithmetic , cancer , digital image processing , welding , metallurgy
Quantitative analysis of dynamic gadolinium‐DTPA (diethylenetriamine pentaacetic acid) enhanced magnetic resonance imaging (MRI) is emerging as a highly sensitive tool for detecting malignant breast tissue. Three‐dimensional rapid imaging techniques, such as keyhole MRI, yield high temporal sampling rates to accurately track contrast enhancement and washout in lesions over the course of multiple volume acquisitions. Patient motion during the dynamic acquisitions is a limiting factor that degrades the image quality, particularly of subsequent subtraction images used to identify and quantitatively evaluate regions suggestive of malignancy. Keyhole imaging is particularly sensitive to motion since datasets acquired over an extended period are combined in k ‐space. In this study, motion is modeled as set of translations in each of the three orthogonal dimensions. The specific objective of the study is to develop and implement an algorithm to correct the consequent phase shifts in k ‐space data prior to offline keyhole reconstruction three‐dimensional (3D) volume breast MR acquisitions.