An Image-based Approach to Understanding the Physics of MR Artifacts

Radiographics ◽  
2011 ◽  
Vol 31 (3) ◽  
pp. 849-866 ◽  
Author(s):  
John N. Morelli ◽  
Val M. Runge ◽  
Fei Ai ◽  
Ulrike Attenberger ◽  
Lan Vu ◽  
...  
Keyword(s):  
Mr Artifacts

scholarly journals MR Artifacts, Safety, and Quality Control

Radiographics ◽  
2006 ◽  
Vol 26 (1) ◽  
pp. 275-297 ◽  
Author(s):  
Jiachen Zhuo ◽  
Rao P. Gullapalli
Keyword(s):  
Quality Control ◽  
Mr Artifacts

Magnetic resonance imaging and aneurysm clips

1989 ◽  
Vol 70 (3) ◽  
pp. 426-431 ◽  
Author(s):  
Bertil Romner ◽  
Magnus Olsson ◽  
Bengt Ljunggren ◽  
Stig Holtås ◽  
Hans Säveland ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Mr Imaging ◽  
Image Artifacts ◽  
Resonance Imaging ◽  
Content Type ◽  
Aneurysm Clip ◽  
Different Types ◽  
Mr Artifacts ◽  
Fine Print

✓ The magnetic properties of 12 different types of aneurysm clip were investigated in order to identify which clips allow postoperative magnetic resonance (MR) imaging without risk. Clip-induced MR artifacts were also quantitatively studied using a geometrical phantom. Nonferromagnetic aneurysm clips like the Yaşargil Phynox, Sugita Elgiloy, and Vari-Angle McFadden clips do not appear to contraindicate MR studies performed with a FONAR β-3000M imager. There is no clip movement upon introduction of the phantom into the MR imager, and the image artifacts caused by the clips are so limited that patients harboring such clips may well be considered for MR imaging. This examination may reveal information not obtainable by any other radiological modality.

Practical MR Physics, and Case File of MR Artifacts and Pitfalls

2011 ◽  
Vol 38 (3) ◽  
pp. 1733-1733
Author(s):  
Donna Reeves
Keyword(s):  
Case File ◽  
Mr Artifacts ◽  
Mr Physics

Aneurysm clip MR artifacts

1998 ◽  
Vol 39 (1) ◽  
pp. 70-76 ◽  
Author(s):  
I. M. Burtscher ◽  
T. Owman ◽  
B. Romner ◽  
F. Ståhlberg ◽  
S. Holtås
Keyword(s):  
Aneurysm Clip ◽  
Mr Artifacts

scholarly journals MR artifacts: a review

1986 ◽  
Vol 147 (6) ◽  
pp. 1271-1281 ◽  
Author(s):  
EM Bellon ◽  
EM Haacke ◽  
PE Coleman ◽  
DC Sacco ◽  
DA Steiger ◽  
...  
Keyword(s):  
Mr Artifacts

Surgical sutures: MR artifacts and sequence dependence

1994 ◽  
Vol 4 (2) ◽  
pp. 209-211 ◽  
Author(s):  
Nogah Haramati ◽  
Brian Penrod ◽  
Ronald B. Staron ◽  
Charles N. Barax
Keyword(s):  
Sequence Dependence ◽  
Mr Artifacts ◽  
Surgical Sutures

Aneurysm clip MR artifacts

1998 ◽  
Vol 39 (1) ◽  
pp. 70-76 ◽  
Author(s):  
I. M. Burtscher ◽  
T. Owman ◽  
B. Romner ◽  
F. Ståhlberg ◽  
S. Holtås
Keyword(s):  
Stainless Steel ◽  
Mr Imaging ◽  
Spin Echo ◽  
Pulse Sequences ◽  
Metal Artifacts ◽  
Aneurysm Clip ◽  
Imaging Parameters ◽  
Mr Artifacts ◽  
High Bandwidth ◽  
Train Length

Purpose: the aim of this study was to evaluate the extent to which titanium aneurysm clips could improve the quality of MR imaging compared with stainless steel clips, and to determine whether the clip artifacts could be reduced by controlling certain MR imaging parameters in frequently used pulse sequences Material and Methods: the metal artifacts induced by 3 aneurysm clips were compared in 3 pulse sequences. the clips were: a Yasargil titanium aneurysm clip FT 752 T; a Yasargil standard aneurysm clip FE 752 K and, for comparison, a ferromagnetic Scoville aneurysm clip En-58J. the pulse sequences were: spin echo (SE); gradient echo (GE); and fast SE. an evaluation was made of 3 imaging parameters with regard to their influence on the size of the metal artifacts. the parameters were: bandwidth; echo time (TE); and echo-train length Results: the titanium clip showed artifacts that were about 60% smaller than those from the stainless steel clip. the only parameter that influenced artifact size to any major degree was bandwidth in the SE sequences but not in the GE sequences. GE sequences induced larger artifacts than SE sequences and showed larger artifacts with longer TE Conclusion: Titanium aneurysm clips reduced MR artifacts by approximately 60% compared to stainless steel clips. Artifacts were further reduced by using SE-based sequences with a high bandwidth or, if necessary, GE sequences with a low TE

MR Artifacts

2010 ◽  
pp. 45-166
Author(s):  
Alexander C. Mamourian
Keyword(s):  
Mr Artifacts
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