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- W2058574274 abstract "Ever since magnetic resonance (MR) invaded the medical imaging field, it has played an increasingly important role and is even currently being considered for stereotactic guidance of probes in the brain. While MR pictures indeed convey more clinical information than CT, the geometry of MR pictures is, unfortunately, not as accurate as the gemetry of CT pictures. In other words, if a square grid phantom is scanned, then the CT picture will show a square grid, while the MR picture will rather reveal a distorted grid. This distortion is primarily due to small variations in the static magnetic field. This small distortion does not impede radiological diagnosis; however, it is a source of concern if one contemplates utilizing the MR pictures for accurate stereotactic positioning of a probe at a very precise point in the brain. Another area of application where the distortion of the MR picture should be compensated for is the superposition of CT and MR pictures so that both informations could be used for diagnosis or stereotactic purposes. This paper essentially addresses the nonlinear distortion of MR pictures and how it could be compensated for through software manipulation of the MR picture." @default.
- W2058574274 created "2016-06-24" @default.
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- W2058574274 date "1988-06-27" @default.
- W2058574274 modified "2023-09-23" @default.
- W2058574274 title "Correction Of Distortion Of MR Pictures For MR-Guided Robotic Sterotatic Procedures" @default.
- W2058574274 doi "https://doi.org/10.1117/12.968695" @default.
- W2058574274 hasPublicationYear "1988" @default.
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