MR cone-beam CT fusion image overlay for fluoroscopically guided percutaneous biopsies in pediatric patients

作者：Thakor Avnesh S; Patel Premal A; Gu Richard; Rea Vanessa; Amaral Joao; Connolly Bairbre L

来源：Pediatric Radiology, 2016, 46(3): 407-412.

DOI：10.1007/s00247-015-3479-5

• Biopsy
• Bone
• Children
• Cone-beamcomputed tomography
• Image fusion
• Magnetic resonance imaging
• Soft tissue

Lesions only visible on magnetic resonance (MR) imaging cannot easily be targeted for image-guided biopsy using ultrasound or X-rays but instead require MR guidance with MR-compatible needles and long procedure times (acquisition of multiple MR sequences). We developed an alternative method for performing these difficult biopsies in a standard interventional suite, by fusing MR with cone-beam CT images. The MR cone-beam CT fusion image is then used as an overlay to guide a biopsy needle to the target area under live fluoroscopic guidance. Advantages of this technique include (i) the ability for it to be performed in a conventional interventional suite, (ii) three-dimensional planning of the needle trajectory using cross-sectional imaging, (iii) real-time fluoroscopic guidance for needle trajectory correction and (iv) targeting within heterogeneous lesions based on MR signal characteristics to maximize the potential biopsy yield.

• 出版日期2016-3