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MR imaging-guided breast intervention: experience with two systems

U Fischer1, R Vosshenrich, W Döler

  • 1Department of Radiology, Georg-August Universität Göttingen, Germany.

Radiology
|May 1, 1995
PubMed
Summary
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Two magnetic resonance (MR) imaging systems effectively guide breast interventions. Both systems proved suitable for fine-needle biopsy and preoperative localization of MR-exclusive lesions.

Area of Science:

  • Radiology
  • Medical Imaging
  • Interventional Procedures

Background:

  • Magnetic resonance (MR) imaging is crucial for detecting breast lesions not visible with other modalities.
  • Image-guided interventions improve diagnostic accuracy and treatment planning for breast cancer.

Purpose of the Study:

  • To compare the efficacy of two distinct magnetic resonance (MR) imaging systems for guiding breast interventions.
  • To evaluate their performance in needle biopsies and preoperative wire localizations.

Main Methods:

  • Thirty-four patients with 34 MR-exclusive lesions underwent 51 procedures using two systems: an add-on surface coil device (25 cases) and a dedicated breast biopsy coil (26 cases).
  • Nonmagnetic 19.5-gauge needles were used for biopsies, and nonmagnetic hook wires for localizations.

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Main Results:

  • Cytologic findings were confirmed in 19 of 23 needle biopsies; three were non-diagnostic. One technical failure occurred with the biopsy coil.
  • Open biopsy after MR imaging-guided localization successfully removed 26 of 28 lesions. One carcinoma was missed initially but removed upon repeat localization. One technical failure occurred with the biopsy coil for a lesion near the chest wall.

Conclusions:

  • Both evaluated MR imaging systems are suitable for fine-needle biopsy and preoperative localization.
  • These systems facilitate intervention for lesions detected exclusively by MR imaging.