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MR-guided core biopsies of soft tissue tumours on an open 0.23 T imager
R K Parkkola1, K T Mattila, J T Heikkilä
1Department of Diagnostic Radiology, University Hospital of Turku, Turku, Finland.
Purpose:
To assess the feasibility of MR-guided soft tissue core biopsies on an open 0.23 T magnet.
Material And Methods:
Twenty-nine consecutive patients with known or suspected benign or malignant soft tissue tumours underwent MR imaging. A one-slice dynamic enhancement sequence was used to obtain an enhancement curve of the tumour. MR-guided core biopsy of the tumour was performed in the same session.
Results:
All biopsies could be performed on an open 0.23 T magnet. Standard MR images and dynamic enhancement curves were used in deciding biopsy route and target. The MR-guided core biopsy specimens were sufficient for histopathological diagnosis in 27 of 29 cases.
Conclusion:
Open magnet configuration allows easy access to the patient and near real-time imaging guidance of soft tissue tumours. Minimally invasive MR-guided core biopsies of soft tissue tumours are feasible and help to avoid open surgical biopsies.
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