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PubMed · 2044121

Biopsy needle characteristics.

G S Gazelle·J R Haaga
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Abstract

Percutaneous biopsy is the radiologist's most frequently performed interventional procedure. Its success is due to a number of factors, including rapid advancements in biopsy needle technology which have allowed interventionalists to improve upon the efficacy, safety, and accuracy of the procedure. The characteristics of these needles are discussed, with reference to specific applications of the different needles, and the safety and diagnostic information that can be obtained. A thorough knowledge of the different needles available is important for a well-equipped radiology department, and a better choice of the most appropriate needle for each procedure.

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Biopsy, NeedleEquipment DesignHumansNeedlesJournal ArticleReview

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G S Gazelle, J R Haaga. Biopsy needle characteristics.. https://doi.org/10.1007/bf02635525

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PubMed2007

Targeting difficult accessible breast lesions: MRI-guided needle localization using a freehand technique in a 3.0 T closed bore magnet.

PURPOSE: To report the accuracy of magnetic resonance imaging (MRI)-guided needle localization for diagnosis of MRI detected suspicious breast lesions located in difficult accessible regions of the breast, using the freehand method in a 3.0 T closed bore magnet. MATERIALS AND METHODS: In five patients with five MRI-only breast lesions underwent MRI-guided needle localization for histopathologic evaluation of the lesions. All interventional procedures were performed in a 3.0 T MRI system with the patient in prone position and by using a dedicated phased array breast coil. MRI-guided needle localizations were performed by using a freehand technique. In our study, the high-resolution scan allowed preprocedural localization of all lesions without use of contrast enhancement. In all cases contrast-enhanced MRI was performed after insertion of the wire to confirm the tip of the wire in direct contact with the enhancing lesion. RESULTS: Needle localizations were performed in five patients. Histopathologic evaluation of tissue after surgery excision biopsy revealed one lymph node, three invasive ductal carcinoma and one ductal carcinoma in situ. Lesion size varied from 6 to 30 mm. Mean duration time was 25 min. No complications occurred during the intervention method. In the patient with the benign lesion control MRI of the breast after 6 months confirmed lesion removal. CONCLUSIONS: MRI-guided needle localization by using a freehand technique in a 3.0 T closed bore magnet is a safe and accurate method for diagnosis of difficult accessible breast lesions only visible on MRI.

Biopsy, Needle↗