Catheter-based delineation of lumpectomy cavity for accurate target definition in partial-breast irradiation with multicatheter interstitial brachytherapy - Sato, Kazuhiko; Shimo, Takahiro; Fuchikami, Hiromi; Takeda, Naoko; Kato, Masahiro; Okawa, Tomohiko (Journal of Contemporary Brachytherapy, 2019)