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DOI: 10.1148/radiol.2353040433
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(Radiology 2005;235:1045-1049.)
© RSNA, 2005

Technical Developments

New Suction Guide Needle Designed to Reduce the Incidence of Biopsy-related Pneumothorax: Experimental Evaluation in Canine Model1

Frank A. Morello, Jr, MD, Kenneth C. Wright, PhD and Thomas M. Lembo, DVM{dagger}

1 From the Departments of Interventional Radiology (F.A.M, K.C.W.) and Veterinary Medicine and Surgery (T.M.L.), University of Texas M. D. Anderson Cancer Center, Houston, Tex. From the 2003 RSNA Annual Meeting. Received March 5, 2004; revision requested May 19; revision received July 29; accepted August 20. Supported in part by a grant from the John S. Dunn Research Foundation and by grant NIH-NCI CA-16672 from the National Cancer Institute. Address correspondence to F.A.M., 3003 Taylorcrest Dr, Pearland, TX 77584 (e-mail: FMorello@tmh.tmc.edu).

In an attempt to remove air that enters the pleural space during computed tomography (CT)-guided coaxial transthoracic needle biopsy, the authors fashioned an 18-gauge experimental suction guide needle and evaluated the incidence of pneumothorax with this needle in comparison to the incidence of pneumothorax with a standard 18-gauge guide needle in a canine model. This experiment had animal care and use committee approval. Ten dogs underwent a biopsy of each lung, for a total of 20 lung biopsies. Half of the biopsies were performed by using the experimental needle (five right lungs, five left lungs), and half were performed by using a standard guide needle. CT revealed pneumothorax during the procedure and was performed to reveal pneumothorax 1 and 3 hours after the procedure. A significant reduction (P < .016) in intraprocedural lung biopsy–associated pneumothorax was found when the experimental guide needle was used.

© RSNA, 2005






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