著者
秋山 新平 新津 守 松尾 周也 野崎 太希 山田 惠
出版者
日本磁気共鳴医学会
雑誌
日本磁気共鳴医学会雑誌 (ISSN:09149457)
巻号頁・発行日
vol.40, no.1, pp.30-32, 2020-02-15 (Released:2020-03-13)
参考文献数
8

Six hundred and ninety consecutive MRI images obtained on 1.5 T or 3.0 T devices were reviewed to investigate the prevalence and diagnostic pitfalls of the vacuum phenomenon (VP) of the knee joint. The VP was identified on 13 knees and 7 knees (53.8%) were diagnosed with osteoarthritis. Gradient-echo imaging facilitated the delineation of minute VP within the joint space with susceptibility artifacts.
著者
寺田 康彦 中尾 愛 中込 真優
出版者
日本磁気共鳴医学会
雑誌
日本磁気共鳴医学会雑誌 (ISSN:09149457)
巻号頁・発行日
vol.38, no.3, pp.61-75, 2018-08-15 (Released:2018-10-03)
参考文献数
62
被引用文献数
1 1

Compressed sensing (CS) is a rapidly developing technique for reducing scanning times while maintaining image contrast and quality. CS theory affirms that certain images can be recovered from highly compressed k-space data with an appropriate reconstruction algorithm. This article reviews the fundamentals of CS, its methods, pulse sequence designs, the reconstruction algorithm, and potential artifacts and their causes, which are important for implementing the CS technique in clinical practice.
著者
黒木 嘉典 大橋 望 渡辺 圭司 新村 友季子 新村 眞司 池原 在 伊波 恵
出版者
日本磁気共鳴医学会
雑誌
日本磁気共鳴医学会雑誌 (ISSN:09149457)
巻号頁・発行日
vol.39, no.1, pp.25-28, 2019-02-15 (Released:2019-03-18)
参考文献数
16

We analyzed the efficacy of time-intensity curve and texture analysis of dynamic contrast enhanced study (DCE), and also mean apparent diffusion coefficient (ADC) and histogram analysis of diffusion-weighted imaging in a neoadjuvant chemotherapy (NAC) non-effective group and an NAC effective group of patients with breast cancer. Based on texture and histogram analysis, it was speculated that early response was predictable.