JaLCDOI 10.18926/AMO/32806
フルテキストURL fulltext.pdf
著者 Yabuki, Takayuki| Togami, Izumi| Kitagawa, Takahiro| Sasai, Nobuya| Tsushima, Tomoyasu| Shirasaki, Yoshinori| Hiraki, Yoshio|
抄録 <p>The purpose of this study was to compare the MR characteristics of renal cell carcinomas against histologic findings and to assess the correlations among signal intensity, tumor enhancement, and pathologic findings. Fifty-four patients (56 lesions) were examined by MR imaging and then underwent partial or radical nephrectomy. The pathologic diagnosis of all lesions was renal cell carcinoma. All MR examinations were performed as dynamic studies using the same 1.5-T scanner. MR characteristics were compared against pathologic findings after resection, and the correlations among signal intensity, tumor enhancement, and pathologic findings were then assessed. A significant correlation was observed between tumor grade and tumor enhancement, with G3 lesions tending to show little enhancement. Regardless of the histologic classification, G3 tumors were found to contain highly heterotypic cancer cells and very few vessels by histopathologic examination. No significant correlations were noted between the other MR characteristics and pathologic findings. Renal cell carcinomas showing little enhancement tend to be highly malignant lesions based on the pathologic findings. Special consideration is required for these tumors with regard to the selection of surgical intervention and follow-up observation.</p>
キーワード kidney kidney neoplasms MR diagnosis grade
Amo Type Article
発行日 2003-08
出版物タイトル Acta Medica Okayama
57巻
4号
出版者 Okayama University Medical School
開始ページ 179
終了ページ 186
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 14627069
Web of Sience KeyUT 000184987100003
JaLCDOI 10.18926/AMO/31990
フルテキストURL fulltext.pdf
著者 Togami, Izumi| Sasai, Nobuya| Tsunoda, Masatoshi| Sei, Tetsuro| Yabuki, Takayuki| Kitagawa, Takahiro| Mitani, Masahiko| Akaki, Shiro| Kuroda, Masahiro| Hiraki, Yoshio|
抄録 <p>A preliminary study was conducted to evaluate the superior and inferior glenoid labra with abductive movement using an open-type MR unit in asymptomatic healthy volunteers. Both fast low angle shot (FLASH) and turbo spin echo (TSE) images were obtained to evaluate the shapes of both the superior and inferior labra, as well as to assess changes in signal at these sites. As the abduction angle was increased, the shape of the superior labrum changed from round or triangular to crescentic and a higher signal was frequently seen. At an abduction angle of 150 degrees, an increase in signal was seen in one-half of the superior labra; this increase was noted more frequently in volunteers over 40 years of age. In some of the superior labra, the increase in signal seen at 150 degrees abduction disappeared on subsequent images obtained at 0 degrees abduction. Hence, the increase in signal was considered to be a reversible change. The shape of the inferior labrum tended to change from crescentic to triangular or round. An increase in signal in the inferior labrum was unrelated to the abduction angle. Abductive kinematic studies using an open-type MR unit provides information about the morphology of the superior and inferior labra, as well as information about signal changes occurring at these sites.</p>
キーワード shoulder kinematic magnetic resonance imaging(MRI) glenoid labrum open-type MRI
Amo Type Article
発行日 2001-08
出版物タイトル Acta Medica Okayama
55巻
4号
出版者 Okayama University Medical School
開始ページ 237
終了ページ 243
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 11512566
Web of Sience KeyUT 000170367200006