3 156

Cited 291 times in

Overcoming artifacts from metallic orthopedic implants at high-field-strength MR imaging and multidetector CT

Authors
 Mi-Jung Lee  ;  Sungjun Kim  ;  Jin-Suck Suh  ;  Seung Hwan Han  ;  Dae-Hong Kim  ;  Yong-Min Huh  ;  Ho-Taek Song  ;  Sung-Ah Lee 
Citation
 Radiographics, Vol.27(3) : 791-803, 2007 
Journal Title
 Radiographics 
ISSN
 0271-5333 
Issue Date
2007
Abstract
At magnetic resonance (MR) imaging and multidetector computed tomography (CT), artifacts arising from metallic orthopedic hardware are an obstacle to obtaining optimal images. Although various techniques for reducing such artifacts have been developed and corroborated by previous researchers, a new era of more powerful MR imaging and multidetector CT modalities has renewed the importance of a systematic consideration of methods for artifact reduction. Knowledge of the factors that contribute to artifacts, of related theories, and of artifact reduction techniques has become mandatory for radiologists. Factors that affect artifacts on MR images include the composition of the metallic hardware, the orientation of the hardware in relation to the direction of the main magnetic field, the strength of the magnetic field, the pulse sequence type, and other MR imaging parameters (mainly voxel size, which is determined by the field of view, image matrix, section thickness, and echo train length). At multidetector CT, the factors that affect artifacts include the composition of the hardware, orientation of the hardware, acquisition parameters (peak voltage, tube charge, collimation, and acquired section thickness), and reconstruction parameters (reconstructed section thickness, reconstruction algorithm used, and whether an extended CT scale was used). A comparison of images obtained with different hardware and different acquisition and reconstruction parameters facilitates an understanding of methods for reducing or overcoming artifacts related to metallic implants.
Full Text
http://pubs.rsna.org/doi/abs/10.1148/rg.273065087
DOI
10.1148/rg.273065087
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sungjun(김성준) ORCID logo https://orcid.org/0000-0002-7876-7901
Suh, Jin Suck(서진석) ORCID logo https://orcid.org/0000-0001-9455-9240
Song, Ho Taek(송호택) ORCID logo https://orcid.org/0000-0002-6655-2575
Lee, Sung Ah(이성아)
Huh, Yong Min(허용민) ORCID logo https://orcid.org/0000-0002-9831-4475
Export
RIS (EndNote)
XLS (Excel)
XML
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/97335
사서에게 알리기
  feedback

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse