Percutaneous gadolinium injection under MR guidance to mark target for CT-guided radiofrequency ablation.
Selection of the appropriate imaging tool depends on a number of factors that reflect the patient, the procedure, and the physician. Multiple imaging techniques are often required to perform elements of a whole procedure. A patient with an allergy to iodinated contrast material and a 3.0-cm hepatic metastasis that was invisible on computed tomography (CT) was treated with CT-guided radiofrequency ablation by first injecting gadolinium under magnetic resonance guidance to mark the location of the lesion. Gadolinium's high atomic number makes it a viable contrast agent for attenuating x rays under fluoroscopic or CT guidance.
Solomon
Stephen B
SB
Department of Radiology, Johns Hopkins Bayview Medical Center, Baltimore, Maryland, USA. ssolomon@post.harvard.edu
Bohlman
Mark E
ME
Choti
Michael A
MA
D000368:Aged; D017115:Catheter Ablation / Q000379:methods*; D003287:Contrast Media; D005260:Female; D005682:Gadolinium; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis / Q000556:secondary / Q000601:surgery*; D008279:Magnetic Resonance Imaging; D012811:Sigmoid Neoplasms / Q000473:pathology; D014057:Tomography, X-Ray Computed
D003287:Contrast Media; D005682:Gadolinium