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PubMed · 493528

Computed tomographic guided liver biopsy using the Menghini needle.

J R Haaga·J Vanek
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Abstract

CT guided biopsies of the liver using the Menghini needle were performed in 42 patients. The recovery of diagnostic tissue was successful in 86% of focal lesions. Advantages over the blind liver technique include better recovery of diagnostic specimens, while advantages over the ultrasonic guided techniques include greater amount of tissue obtained and better occuracy in guidance. This technique is indicated in those patients with a small number of focal defects in the liver in whom a diagnostic histologic specimen is desired.

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Biopsy, NeedleHumansLiverLiver NeoplasmsNeedlesTomography, X-Ray ComputedUltrasonographyComparative StudyJournal Article

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BibTeXRIS

J R Haaga, J Vanek. 1979. Computed tomographic guided liver biopsy using the Menghini needle.. https://doi.org/10.1148/133.2.405

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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↗