Direct MRI-guided biopsy of the prostate

use of post-biopsy needle track imaging to confirm targeting

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Purpose: To report the observation that in-plane post-biopsy T2-weighted MRI often demonstrates the needle track as a transient visible linear tissue distortion during direct MRI-guided biopsy. Materials and methods: We retrospectively identified 11 prostatic lesions in 9 men that underwent direct MRI-guided biopsy and in which post-biopsy images were obtained in the plane of the biopsy needle. Results: In 9 of 11 targets, a post-biopsy needle track was visible as a linear tissue distortion on in-plane T2-weighted images obtained at a mean interval of 6 min (range 3–15). In these nine cases, the needle track traversed the intended target, and the biopsy was positive for malignancy in six. Biopsy was positive in one of two cases where the needle track was not visible. In five targets, one or more delayed series were obtained after a mean interval of 21 min (range 8–33), showing the track was no longer visible (n = 3) or was of progressively decreased conspicuity (n = 2). Conclusion: Accurate targeting during direct MRI-guided biopsy of the prostate can be confirmed by obtaining post-biopsy in-plane images, since the needle track is usually visible as a transient linear tissue distortion.

Original languageEnglish (US)
Pages (from-to)2517-2522
Number of pages6
JournalAbdominal Imaging
Volume40
Issue number7
DOIs
StatePublished - Feb 17 2015

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Needle Biopsy
Prostate
Biopsy
Needles

Keywords

  • MRI-guided biopsy
  • Multiparametric MRI
  • Prostate

ASJC Scopus subject areas

  • Gastroenterology
  • Urology
  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

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title = "Direct MRI-guided biopsy of the prostate: use of post-biopsy needle track imaging to confirm targeting",
abstract = "Purpose: To report the observation that in-plane post-biopsy T2-weighted MRI often demonstrates the needle track as a transient visible linear tissue distortion during direct MRI-guided biopsy. Materials and methods: We retrospectively identified 11 prostatic lesions in 9 men that underwent direct MRI-guided biopsy and in which post-biopsy images were obtained in the plane of the biopsy needle. Results: In 9 of 11 targets, a post-biopsy needle track was visible as a linear tissue distortion on in-plane T2-weighted images obtained at a mean interval of 6 min (range 3–15). In these nine cases, the needle track traversed the intended target, and the biopsy was positive for malignancy in six. Biopsy was positive in one of two cases where the needle track was not visible. In five targets, one or more delayed series were obtained after a mean interval of 21 min (range 8–33), showing the track was no longer visible (n = 3) or was of progressively decreased conspicuity (n = 2). Conclusion: Accurate targeting during direct MRI-guided biopsy of the prostate can be confirmed by obtaining post-biopsy in-plane images, since the needle track is usually visible as a transient linear tissue distortion.",
keywords = "MRI-guided biopsy, Multiparametric MRI, Prostate",
author = "Nicholson, {Alexander J.} and David Pettersson and Elena Korngold and Bryan Foster and Arthur Hung and Christopher Amling and Fergus Coakley",
year = "2015",
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T2 - use of post-biopsy needle track imaging to confirm targeting

AU - Nicholson, Alexander J.

AU - Pettersson, David

AU - Korngold, Elena

AU - Foster, Bryan

AU - Hung, Arthur

AU - Amling, Christopher

AU - Coakley, Fergus

PY - 2015/2/17

Y1 - 2015/2/17

N2 - Purpose: To report the observation that in-plane post-biopsy T2-weighted MRI often demonstrates the needle track as a transient visible linear tissue distortion during direct MRI-guided biopsy. Materials and methods: We retrospectively identified 11 prostatic lesions in 9 men that underwent direct MRI-guided biopsy and in which post-biopsy images were obtained in the plane of the biopsy needle. Results: In 9 of 11 targets, a post-biopsy needle track was visible as a linear tissue distortion on in-plane T2-weighted images obtained at a mean interval of 6 min (range 3–15). In these nine cases, the needle track traversed the intended target, and the biopsy was positive for malignancy in six. Biopsy was positive in one of two cases where the needle track was not visible. In five targets, one or more delayed series were obtained after a mean interval of 21 min (range 8–33), showing the track was no longer visible (n = 3) or was of progressively decreased conspicuity (n = 2). Conclusion: Accurate targeting during direct MRI-guided biopsy of the prostate can be confirmed by obtaining post-biopsy in-plane images, since the needle track is usually visible as a transient linear tissue distortion.

AB - Purpose: To report the observation that in-plane post-biopsy T2-weighted MRI often demonstrates the needle track as a transient visible linear tissue distortion during direct MRI-guided biopsy. Materials and methods: We retrospectively identified 11 prostatic lesions in 9 men that underwent direct MRI-guided biopsy and in which post-biopsy images were obtained in the plane of the biopsy needle. Results: In 9 of 11 targets, a post-biopsy needle track was visible as a linear tissue distortion on in-plane T2-weighted images obtained at a mean interval of 6 min (range 3–15). In these nine cases, the needle track traversed the intended target, and the biopsy was positive for malignancy in six. Biopsy was positive in one of two cases where the needle track was not visible. In five targets, one or more delayed series were obtained after a mean interval of 21 min (range 8–33), showing the track was no longer visible (n = 3) or was of progressively decreased conspicuity (n = 2). Conclusion: Accurate targeting during direct MRI-guided biopsy of the prostate can be confirmed by obtaining post-biopsy in-plane images, since the needle track is usually visible as a transient linear tissue distortion.

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