title: MR-guided biopsies with a newly designed cordless coil in an open low-field system: initial findings.
abstract: The purpose of this study was to examine the feasibility and safety of MR-guided biopsies with a newly designed cordless coil in an open low-field magnetic resonance (MR) system. Eleven patients were biopsied using a low-field system (0.2 T, Magnetom Concerto, Siemens) by using the new cordless coil (Siemens). The biopsies were performed in different organ systems [liver (n = 7), abdomen (n = 1), shoulder (n = 1), pelvis (n = 1) and hip (n = 1)]. The procedures were guided using T1-weighted FLASH (fast low-angle shot) sequences. The lesions were biopsied using the coaxial technique through a 15-gauge puncture needle with a 16-gauge biopsy handy. Coil handling, image quality and complications were evaluated. Imaging quality and visualization of the lesions were optimal up to a penetration depth of 9 cm. In all cases the biopsy procedures were successfully performed with MR guidance without any complications. Pathological findings revealed seven cases of malignant tissue and four cases of non-malignant tissue. The use of the cordless coil allows improved patient access during the biopsy and an improved handling of the coil system. MR-guided biopsy using the novel cordless coil system can be performed safely and precisely with easy handling of the coil. This coil concept, however, is restricted to special indications.
authors.affiliation: Institute for Diagnostic and Interventional Radiology, J. W. Goethe-University Frankfurt, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany. Zangos@em.uni-frankfurt.de
authors.forename: Stephan
authors.initials: S
authors.lastname: Zangos
authors.forename: Theodor
authors.initials: T
authors.lastname: Vetter
authors.forename: Frank
authors.initials: F
authors.lastname: Huebner
authors.forename: Montu
authors.initials: M
authors.lastname: Tuwari
authors.forename: Florian
authors.initials: F
authors.lastname: Mayer
authors.forename: Katrin
authors.initials: K
authors.lastname: Eichler
authors.forename: M-L
authors.initials: ML
authors.lastname: Hansmann
authors.forename: A
authors.initials: A
authors.lastname: Wetter
authors.forename: C
authors.initials: C
authors.lastname: Herzog
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Vogl
mesh_terms: D000368:Aged; D001707:Biopsy, Needle / Q000379:methods; D001842:Bone and Bones / Q000473:pathology; D005240:Feasibility Studies; D006801:Humans; D008099:Liver / Q000473:pathology; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods; D008875:Middle Aged; D009369:Neoplasms / Q000175:diagnosis*; D019047:Phantoms, Imaging; D051598:Whole Body Imaging