Purpose
To assess feasibility of instant intraprocedural multiplaner reconstructions in order to improve accuracy of computed tomography guided ablation probe placement and monitoring of ablation zone development.
Material and methods
Computed tomography is one of the most frequently used guidance methods for percutaneous ablation procedures. Athough, retrospective multiplaner reconstructions are widely used in diagnostic radiology, the inability to have multiplaner reconstructions during ablation procedures has been considered a significant deficiency. We developed an imaging algorithm which allowed us to perform instant intraprocedural maltiplaner reconstructions to overcome this problem. GE Light Speed 16-slice computed tomography scanner was used for percutaneous ablations on 15 consecutive patients ( 7- hepatic masses, 7- renal masses, 1- lung mass) using the "repeat series" function instead of the preset standard biopsy mode which permitted immediate multiplaner reconstructions.
Results
Instant multiplaner computed tomography reconstructions were successfully performed on all patients. Intraprocedural and retrospective evaluation of obtained images demonstrated superior visualization of ablation probe position when compared to standard axial computed tomography imaging. Improved ability to monitor ablation zone creation during cryoablation procedures was also confirmed.
Conclusion
Instant intraprocedural multiplaner reconstructions during computed tomography guided ablation procedures can be easily performed with minor changes to the preset imaging algorithm. It allows more accurate ablation probe placement and, in cases of cryoablation, superior visualization of the ablation zone.