Artificial spine fractures: detection with helical and conventional CT

Radiology
T M LinkM D Häussler

Abstract

To compare the accuracy of detection of artificial spine fractures with helical computed tomography (CT) versus conventional CT. Twenty-six motion segments from 15 human cadaver thoracolumbar spines were imaged with helical and conventional CT both before and after fractures were artificially induced. The vertebrae were scanned with different collimations, reconstruction indexes, and exposure doses. A total of 900 images were analyzed by four radiologists, and a receiver operating characteristic (ROC) analysis was performed. ROC analysis showed a large area under the curve for conventional CT (0.913) than for helical CT (0.844) when 3-mm collimation was used. The ability to detect fractures with helical CT increased when collimation was decreased and exposure dose was increased. Conventional CT allows more accurate detection of artificial spine fractures than does helical CT. Helical CT requires thinner collimation for fracture detection comparable with that of conventional CT.

Citations

Jan 27, 2006·Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·J S BauerT M Link
Nov 1, 2010·Insights Into Imaging·Bernhard Tins
Aug 25, 2009·Veterinary Radiology & Ultrasound : the Official Journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·Silke HechtWilliam H Adams
Sep 24, 1999·Radiologic Clinics of North America·E S Pretorius, E K Fishman

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