TY - JOUR
T1 - MRI of Soft-Tissue Lesions
T2 - Opposed-Phase T2*-Weighted Gradient-Echo Images
AU - Fujimoto, Hajime
AU - Murakami, Koji
AU - Ichikawa, Tomoaki
AU - Matsubara, Tamotsu
AU - Tsumurai, Yoshiharu
AU - Masuda, Sumio
AU - Terauchi, Masami
AU - Ozawa, Kosuke
AU - Nosaka, Kenji
AU - Arimizu, Noboru
PY - 1993
Y1 - 1993
N2 - We evaluated the ability of opposed-phase T2*-weighted gradient- echo (T2*GE) MRI to demarcate soft tissue lesions. The series contained 37 cases, including 18 benign tumors, 8 malignant tumors, and 11 miscellaneous nonneoplastic soft-tissue lesions. Images were obtained on a 0.5 T magnet with T2*GE imaging (TR/TE 300/22 ms, 20°). Results were compared with those of Tl-weighted SE images (500/20-40) and T2-weighted SE (T2SE) images (2, 000/ 80). The T2*GE images were similar to T2SE images with respect to the signal behavior and internal architecture of the masses in many cases. In some instances, they were better than T2SE images in delineating the lesions and adjacent fat tissue, in delineating the lesions and adjacent small vessels, and in depicting special features such as hemosiderin deposits. They were inferior to T2SE images in delineating the lesions and adjacent muscles. Because of reduced lesion-muscle delineation, T2*GE images can not be substituted for T2SE images in the evaluation of soft-tissue lesions, but are useful as an adjunct in some cases.
AB - We evaluated the ability of opposed-phase T2*-weighted gradient- echo (T2*GE) MRI to demarcate soft tissue lesions. The series contained 37 cases, including 18 benign tumors, 8 malignant tumors, and 11 miscellaneous nonneoplastic soft-tissue lesions. Images were obtained on a 0.5 T magnet with T2*GE imaging (TR/TE 300/22 ms, 20°). Results were compared with those of Tl-weighted SE images (500/20-40) and T2-weighted SE (T2SE) images (2, 000/ 80). The T2*GE images were similar to T2SE images with respect to the signal behavior and internal architecture of the masses in many cases. In some instances, they were better than T2SE images in delineating the lesions and adjacent fat tissue, in delineating the lesions and adjacent small vessels, and in depicting special features such as hemosiderin deposits. They were inferior to T2SE images in delineating the lesions and adjacent muscles. Because of reduced lesion-muscle delineation, T2*GE images can not be substituted for T2SE images in the evaluation of soft-tissue lesions, but are useful as an adjunct in some cases.
KW - Magnetic resonance imaging
KW - Muscles
KW - Neoplasms
KW - Neoplasms
KW - Soft tissues
KW - Techniques
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U2 - 10.1097/00004728-199305000-00016
DO - 10.1097/00004728-199305000-00016
M3 - Article
C2 - 8491904
AN - SCOPUS:0027271816
SN - 0363-8715
VL - 17
SP - 418
EP - 424
JO - Journal of Computer Assisted Tomography
JF - Journal of Computer Assisted Tomography
IS - 3
ER -