Does needle rotation improve lesion targeting?

Autor: Badaan S; Robotics Laboratory, Department of Urology, Johns Hopkins Medicine, 5200 Eastern Avenue, Baltimore, MD 21224, USA., Petrisor D, Kim C, Mozer P, Mazilu D, Gruionu L, Patriciu A, Cleary K, Stoianovici D
Jazyk: angličtina
Zdroj: The international journal of medical robotics + computer assisted surgery : MRCAS [Int J Med Robot] 2011 Jun; Vol. 7 (2), pp. 138-47. Date of Electronic Publication: 2011 Mar 01.
DOI: 10.1002/rcs.381
Abstrakt: Background: Image-guided robots are manipulators that operate based on medical images. Perhaps the most common class of image-guided robots are robots for needle interventions. Typically, these robots actively position and/or orient a needle guide, but needle insertion is still done by the physician. While this arrangement may have safety advantages and keep the physician in control of needle insertion, actuated needle drivers can incorporate other useful features.
Methods: We first present a new needle driver that can actively insert and rotate a needle. With this device we investigate the use of needle rotation in controlled in-vitro experiments performed with a specially developed revolving needle driver.
Results: These experiments show that needle rotation can improve targeting and may reduce errors by as much as 70%.
Conclusion: The new needle driver provides a unique kinematic architecture that enables insertion with a compact mechanism. Perhaps the most interesting conclusion of the study is that lesions of soft tissue organs may not be perfectly targeted with a needle without using special techniques, either manually or with a robotic device. The results of this study show that needle rotation may be an effective method of reducing targeting errors.
(Copyright © 2011 John Wiley & Sons, Ltd.)
Databáze: MEDLINE
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