[Quantitative evaluation of magnetization transfer ratio in irradiated breast with breast conservation therapy].
To assess the late effects of radiotherapy, magnetization transfer was evaluated in 2 patients with breast conservation treatment and in 4 patients without treatment. The magnetization transfer ratios (MTRs) were measured from a pair of images obtained by the conventional SPGR pulse sequence and the MT-prepared SPGR sequence on a 1.5-TMR system. The MTR values of irradiated breast were higher than those of non-irradiated breast. The difference in MTR between them was considered to represent tissue change due to irradiation. We showed that MTR is a useful parameter in estimating the late effects of radiotherapy.
Itoh
Y
Y
Department of Radiation Oncology, Aichi Cancer Center Hospital.
Matsushima
S
S
Kinosada
Y
Y
Fuwa
N
N
Kikuchi
Y
Y
D000273:Adipose Tissue / Q000473:pathology; D000328:Adult; D001940:Breast / Q000473:pathology; D001943:Breast Neoplasms / Q000175:diagnosis* / Q000532:radiotherapy / Q000628:therapy*; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D006979:Hyperthermia, Induced; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged