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CT-guided Needle Biopsy of Small Pulmonary Nodules: Value of Respiratory Gating¹

¹ From the Department of Radiology, Vancouver General Hospital and University of British Columbia, Canada (N.T.); and the Department of Radiology, Osaka University Medical School, 2-2 Yamadaoka, Suita, 565-0871, Japan (N.T., N.M., M.M., T.J., T.K., O.H., S.H., S.Y., H.N.). Received November 3, 1999; revision requested December 10; final revision received March 31, 2000; accepted April 4. Address correspondence to N.T. (e-mail: tomiyama@radiol.med.osaka-u.ac.jp).

A respiratory gating technique was developed to allow computed tomography–guided needle biopsy of small pulmonary nodules. Twenty-three pulmonary nodules less than 15 mm in diameter underwent biopsy with the use of this technique. There were 14 true-positive, eight true-negative, and one false-negative result (diagnostic accuracy, 96%). The diagnostic accuracy for small nodules without this technique in a historical control was 69% (P < .05).

Index terms: Biopsies, technology, 60.126 • Computed tomography (CT), guidance, 60.12111, 60.12118 • Interventional procedures, technology • Lung, biopsy, 60.126 • Lung, nodule, 60.314, 60.321 • Lung neoplasms, 60.314, 60.321

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