(Author's comments) Neural fiber tractography is one of the useful clinical applications of diffusion tensor imaging (DTI). We sought an optimal threshold of fractional anisotropy (FA), a standard metric derived from DTI, when depicting tractograms of the corticospinal tracts in the brain. We carried out a tract-specific analysis of normal and diseased corticospinal tracts by ischemic stroke. Our results suggested that optimal FA threshold values may be around 0.20. We had an opportunity to carry out this study at the beginning of clinical use of DTI and are now privileged to introduce our paper as one of the most cited papers.
(Author’s comments) In early 2000s, several reports showing the utility of diffusion weighted imaging (DWI) for detecting breast cancer had emerged. DWI had been focused because it can visualize the breast cancer with high contrast without contrast material. In our article, we try to evaluate how accurate the DWI can demonstrate distribution of breast cancer. DWI of the breast is more challenging than that of other organs due to the convex shape, the air surrounding the breast, and rich fat tissue. These issues has been improving due to progression of hardware including multichannel coil and higher gradient and parallel imaging. However, there are still some limitations exist. Currently, there are two directions of breast DWI in which screening and evaluation of biological characteristics. To accomplish both, better spatial resolution, higher signal to noise ratio, stable imaging quality, and repeatability has to be obtained.
Passive Shimming of MRI Static Magnetic Field Using Regularization of Truncated Singular Value Decomposition
Released: March 02, 2017 |
Article ID mp.2016-0046
Safety of Gadopentetate Dimeglumine after 120 Million Administrations over 25 Years of Clinical Use
Released: December 25, 2013 | Volume 12 Issue 4 Pages 297-304
Toru MATSUMURA, Masakane HAYAKAWA, Fumiki SHIMADA, Masahisa YABUKI, Susan DOHANISH, Petra PALKOWITSCH, Kohki YOSHIKAWA
MRI Findings Consistent with Peripatellar Fat Pad Impingement: How Much Related to Patellofemoral Maltracking?
Released: October 10, 2017 |
Article ID rev.2017-0063
Mohamed Jarraya, Luis E. Diaz, Frank W. Roemer, William F. Arndt, Ajay R. Goud, Ali Guermazi
Comparison of Brain Tumor Contrast-enhancement on T1-CUBE and 3D-SPGR Images
Released: January 12, 2016 | Volume 15 Issue 1 Pages 34-40
Mungunkhuyag MAJIGSUREN, Takashi ABE, Teruyoshi KAGEJI, Kenji MATSUZAKI, Mayumi TAKEUCHI, Seiji IWAMOTO, Yoichi OTOMI, Naoto UYAMA, Shinji NAGAHIRO, Masafumi HARADA
Gadolinium-based Contrast Media, Cerebrospinal Fluid and the Glymphatic System: Possible Mechanisms for the Deposition of Gadolinium in the Brain
Released: January 25, 2018 |
Article ID rev.2017-0116
Toshiaki Taoka, Shinji Naganawa