Abstract
The results of 505 magnetic resonance (MR) imaging examinations of the head disclosed several different types of artifact. Various artifacts observed with two-dimentional Fourier transformation are described and illustrated. All images were obtained with a 0.5 Tesla superconducting MR imager. About 70% of all images contained artifacts. Phase encoding artifacts due to motion or flow were most frequently observed. Center, 'zipper,' truncation, radiofrequency, and ferromagnetic artifacts and contrast error on inversion recovery (IR) images were noted less frequently. Phase encoding artifacts and contrast errors on IR images totally degraded the images, and 'zipper' artifacts were regional. Center artifacts resembled small infarctions, and ferromagnetic artifacts sometimes mimicked hematmas. It is important to recognize these artifacts and to devise methods to avoid their influence on the region of interest. (author).
Iwama, Toru;
Andoh, Takashi;
Sakai, Noboru;
Yamada, Hiromu;
[1]
Funakoshi, Takashi;
Akiyama, Shigeru;
Yoshida, Kakuro
- Gifu Univ. (Japan). Faculty of Medicine
Citation Formats
Iwama, Toru, Andoh, Takashi, Sakai, Noboru, Yamada, Hiromu, Funakoshi, Takashi, Akiyama, Shigeru, and Yoshida, Kakuro.
Artifacts in magnetic resonance imaging of the head.
Japan: N. p.,
1989.
Web.
Iwama, Toru, Andoh, Takashi, Sakai, Noboru, Yamada, Hiromu, Funakoshi, Takashi, Akiyama, Shigeru, & Yoshida, Kakuro.
Artifacts in magnetic resonance imaging of the head.
Japan.
Iwama, Toru, Andoh, Takashi, Sakai, Noboru, Yamada, Hiromu, Funakoshi, Takashi, Akiyama, Shigeru, and Yoshida, Kakuro.
1989.
"Artifacts in magnetic resonance imaging of the head."
Japan.
@misc{etde_5100940,
title = {Artifacts in magnetic resonance imaging of the head}
author = {Iwama, Toru, Andoh, Takashi, Sakai, Noboru, Yamada, Hiromu, Funakoshi, Takashi, Akiyama, Shigeru, and Yoshida, Kakuro}
abstractNote = {The results of 505 magnetic resonance (MR) imaging examinations of the head disclosed several different types of artifact. Various artifacts observed with two-dimentional Fourier transformation are described and illustrated. All images were obtained with a 0.5 Tesla superconducting MR imager. About 70% of all images contained artifacts. Phase encoding artifacts due to motion or flow were most frequently observed. Center, 'zipper,' truncation, radiofrequency, and ferromagnetic artifacts and contrast error on inversion recovery (IR) images were noted less frequently. Phase encoding artifacts and contrast errors on IR images totally degraded the images, and 'zipper' artifacts were regional. Center artifacts resembled small infarctions, and ferromagnetic artifacts sometimes mimicked hematmas. It is important to recognize these artifacts and to devise methods to avoid their influence on the region of interest. (author).}
journal = []
volume = {29:8}
journal type = {AC}
place = {Japan}
year = {1989}
month = {Aug}
}
title = {Artifacts in magnetic resonance imaging of the head}
author = {Iwama, Toru, Andoh, Takashi, Sakai, Noboru, Yamada, Hiromu, Funakoshi, Takashi, Akiyama, Shigeru, and Yoshida, Kakuro}
abstractNote = {The results of 505 magnetic resonance (MR) imaging examinations of the head disclosed several different types of artifact. Various artifacts observed with two-dimentional Fourier transformation are described and illustrated. All images were obtained with a 0.5 Tesla superconducting MR imager. About 70% of all images contained artifacts. Phase encoding artifacts due to motion or flow were most frequently observed. Center, 'zipper,' truncation, radiofrequency, and ferromagnetic artifacts and contrast error on inversion recovery (IR) images were noted less frequently. Phase encoding artifacts and contrast errors on IR images totally degraded the images, and 'zipper' artifacts were regional. Center artifacts resembled small infarctions, and ferromagnetic artifacts sometimes mimicked hematmas. It is important to recognize these artifacts and to devise methods to avoid their influence on the region of interest. (author).}
journal = []
volume = {29:8}
journal type = {AC}
place = {Japan}
year = {1989}
month = {Aug}
}