Prototype Breast Coil for MR-Guided Needle Localization

Heywang‐Köbrunner, Sylvia H.; Huynh, An Tuanh; Viehweg, P.; Hanke, Wilhelm; Requardt, Hermann; Paprosch, Iris

doi:10.1097/00004728-199411000-00006

Cited by 80 publications

(47 citation statements)

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“…Presently, MR-guided Loc is provided by several institutions using various mostly experimental equipments [5,6,7,8,9,11]. The MR-guided percutaneous biopsy thus far has proved more difficult; thus, only a limited number of these studies has been performed and reported.…”

Section: Discussionmentioning

confidence: 99%

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European quadricentric evaluation of a breast MR biopsy and localization device: technical improvements based on phase-I evaluation

et al. 2002

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Our purpose was to report about technical success, problems and solutions, as experienced in a first multicentre study on MR-guided localisation or vacuum biopsy of breast lesions. The study was carried out at four European sites using a dedicated prototype breast biopsy device. Experiences with 49 scheduled localisation procedures and 188 vacuum biopsies are reported. Apart from 35 dropped indications, one localisation procedure and 9 vacuum biopsies were not possible (3 times space problems due to obesity, 2 times too strong compression, 3 times impaired access from medially, 2 times impaired access due to a metal bar). Problems due to too strong compression were recognised by repeat MR without compression. During the procedure problems leading to an uncertain result occurred in eight vacuum biopsies, two related to the procedure: one limited access, and one strong post-biopsy enhancement. Improvements after phase-I study concerned removal of the metal bar, development of an improved medial access, of a profile imitating the biopsy gun, optimisation of compression plates and improved software support. The partners agreed that the improvements answered all important technical problems.

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Section: Discussionmentioning

confidence: 99%

“…The MR-guided percutaneous biopsy is highly desirable. Some devices have thus far been tested for these procedures or for fine-needle aspiration [5,6,7,8]; however, to date, only this prototype allows performance of percutaneous vacuum biopsy.…”

Section: Introductionmentioning

confidence: 99%

European quadricentric evaluation of a breast MR biopsy and localization device: technical improvements based on phase-I evaluation

et al. 2002

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“…The technical details and the procedure of MR-guided intervention with this special biopsy coil have already been extensively described [10,11]. The patient is positioned prone on the biopsy coil and the breast is fixed by compression in mediolateral direction.…”

Section: Methodsmentioning

confidence: 99%

Multicenter study for the evaluation of a dedicated biopsy device for MR-guided vacuum biopsy of the breast

et al. 2002

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The purpose of this multicenter study was to determine the accuracy and clinical value of a dedicated breast biopsy system which allows for MR-guided vacuum biopsy (VB) of contrast-enhancing lesions. In five European centers, MR-guided 11-gauge VB was performed on 341 lesions. In 7 cases VB was unsuccessful. This was immediately realized on postinterventional images or direct follow-up combined with histopathology-imaging correlation; thus, a false-negative diagnosis was avoided. Histology of 334 successful biopsies yielded 84 (25%) malignancies, 17 (5%) atypical ductal hyperplasias, and 233 (70%) benign entities. Verification of malignant or borderline lesions included reexcision of the biopsy cavity. Benign histologic biopsy results were verified by retrospective correlation with the pre- and postinterventional MRI and by subsequent follow-up. Our results indicate that MR-guided VB, in combination with the dedicated biopsy coil, offers the possibility to accurately diagnose even very small lesions that can only be visualized or localized by MRI.

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“…This is also the standard method for handling breast lesions detected with other imaging modalities. Until recently, developmental MRguided breast biopsy devices have been in use, but none of them have been used with low-field scanners [10,[20][21][22]. There are neither imaging protocols nor guidelines for lowfield breast MR imaging or biopsy.…”

Section: Discussionmentioning

confidence: 99%

MR-guided breast biopsy and hook wire marking using a low-field (0.23 T) scanner with optical instrument tracking

et al. 2006

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The purpose of this study was to evaluate the technical feasibility of MR-guided percutaneous breast biopsy (LCNB) and breast hook wire marking in a low-field (0.23 T) MRI system with optical instrument tracking. MR-guided core biopsy and/or hook wire marking was performed on 13 lesions observable at MR imaging only. Seven breast LCNBs and 10 hook wire markings were performed under MR guidance on 11 patients. The diagnosis was confirmed by excision biopsy or mastectomy in 12 lesions and with histopathological and cytological diagnosis and 12-month clinical follow-up in one lesion. All lesions seen in the high-field scanner were also successfully identified and targeted in the low-field scanner. The following procedures were typically technically successful. There were difficulties due to unsatisfactory functioning of some core biopsy guns. Detailed description of low-field MR guidance and optical tracking in breast biopsies is provided. The procedure seems accurate and safe and provides means to obtain a histological diagnosis of a breast lesion only seen with MRI. The low-field biopsy system is comparable to the high-field MRI system. MR-compatible biopsy guns need to be improved.

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Prototype Breast Coil for MR-Guided Needle Localization

Cited by 80 publications

References 0 publications

European quadricentric evaluation of a breast MR biopsy and localization device: technical improvements based on phase-I evaluation

European quadricentric evaluation of a breast MR biopsy and localization device: technical improvements based on phase-I evaluation

Multicenter study for the evaluation of a dedicated biopsy device for MR-guided vacuum biopsy of the breast

MR-guided breast biopsy and hook wire marking using a low-field (0.23 T) scanner with optical instrument tracking

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