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Azlan, C. A. and Nasir, N. F. M. and Saifizul, A. A. and Faizul, M. S. and Ng, K. H. and Abdullah, B. J. J. (2007) A low cost solution for post-biopsy complications using available RFA generator and coaxial core biopsy needle. Australasian Physical & Engineering Sciences in Medicine, 30 (4). pp. 288-291. ISSN 0158-9938

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    Abstract

    Percutaneous image-guided needle biopsy is typically performed in highly vascular organs or in tumours with rich macroscopic and microscopic blood supply. The main risks related to this procedure are haemorrhage and implantation of tumour cells in the needle tract after the biopsy needle is withdrawn. From numerous conducted studies, it was found that heating the needle tract using alternating current in radiofrequency (RF) range has a potential to minimize these effects. However, this Solution requires the use of specially designed needles, which Would make the procedure relatively expensive and complicated. Thus, we propose a simple solution by using readily available coaxial core biopsy needles connected to a radiofrequency ablation (RFA) generator. In order to do so, we have designed and developed an adapter to interface between these two devices. For evaluation purpose, we used a bovine liver as a sample tissue. The experimental procedure was done to study the effect of different parameter settings on the size of coagulation necrosis caused by the RF Current heating on the subject. The delivery of the RF energy was varied by changing the values for delivered power, power delivery duration, and insertion depth. The results showed that the size of the coagulation necrosis is affected by all of the parameters tested. In general, the size of the region is enlarged with higher delivery of RF power, longer duration of power delivery, and shallower needle insertion and become relatively constant after a certain value. We also found that the solution proposed provides a low cost and practical way to minimizes unwanted post-biopsy effects.

    Item Type: Article
    Additional Information: ISI Document Delivery No.: 345YC Times Cited: 1 Cited Reference Count: 9 Cited References: ALLISON DJ, 1988, RADIOLOGY, V169, P261 CHISHOLM RA, 1989, CLIN RADIOL, V40, P627, DOI 10.1016/S0009-9260(89)80326-5 Dromi SA, 2005, CARDIOVASC INTER RAD, V28, P681, DOI 10.1007/s00270-005-0018-z Paulson EK, 2000, J VASC INTERV RADIOL, V11, P905, DOI 10.1016/S1051-0443(07)61810-7 PICCININO F, 1986, J HEPATOL, V2, P165, DOI 10.1016/S0168-8278(86)80075-7 Pritchard WF, 2004, J VASC INTERV RADIOL, V15, P183, DOI 10.1097/01.RVI.000019398.74740.69 RALLS PW, 1987, J COMPUT ASSIST TOMO, V11, P1031, DOI 10.1097/00004728-198711000-00021 SUGANO S, 1991, DIGEST DIS SCI, V36, P1229, DOI 10.1007/BF01307514 ZINS M, 1992, RADIOLOGY, V184, P841 Azlan, C. A. Nasir, N. F. Mohd. Saifizul, A. A. Faizul, M. S. Ng, K. H. Abdullah, B. J. J. Australasian coll physical scientists & engineers medicine Adelaide
    Uncontrolled Keywords: RFA biopsy cauterization ablation percutaneous liver-biopsy radiofrequency cauterization fibrin sealant track hemorrhage
    Subjects: Medicine and Dentistry
    Divisions: UNSPECIFIED
    Depositing User: Mr Ahmad Azwan Azman
    Date Deposited: 18 Oct 2012 02:52
    Last Modified: 18 Oct 2012 02:52
    URI: http://opendepot.org/id/eprint/1447

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