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Detection of Bone Graft Failure in Lumbar Spondylodesis: Spatial Resolution with High-Resolution Peripheral Quantitative CT

¹ Department of Orthopedic and Trauma Surgery, Albert-Ludwigs-University of Freiburg Medical Center, Hugstetterstr. 55, 79106 Freiburg i Br., Germany.
² Department of Diagnostic Radiology, University of Freiburg Medical Center, Freiburg im Breisgau, Germany.
³ Present address: Department of Radiology, University of Wisconsin, Madison, WI.
⁴ AO Research Institute, AO Foundation, Davos, Switzerland.

View larger version (96K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 1A —Sheep 2, false-negative findings on 64-MDCT. 64-MDCT scan shows no fracture in region of graft.

View larger version (121K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 1B —Sheep 2, false-negative findings on 64-MDCT. High-resolution peripheral quantitative CT scan (B) and contact radiograph (C) show delineation of fractured graft.

View larger version (96K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 1C —Sheep 2, false-negative findings on 64-MDCT. High-resolution peripheral quantitative CT scan (B) and contact radiograph (C) show delineation of fractured graft.

View larger version (107K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 2A —Sheep 6, consistently abnormal results among tested techniques. 64-MDCT scan (A), high-resolution peripheral quantitative CT scan (B), and contact radiograph (C) show lysis in region of graft.

View larger version (133K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 2B —Sheep 6, consistently abnormal results among tested techniques. 64-MDCT scan (A), high-resolution peripheral quantitative CT scan (B), and contact radiograph (C) show lysis in region of graft.

View larger version (104K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 2C —Sheep 6, consistently abnormal results among tested techniques. 64-MDCT scan (A), high-resolution peripheral quantitative CT scan (B), and contact radiograph (C) show lysis in region of graft.

View larger version (123K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 3A —Sheep 7, consistent results with all tested techniques. 64-MDCT scan (A), high-resolution peripheral quantitative CT scan (B), and contact radiograph (C) show intact graft.

View larger version (143K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 3B —Sheep 7, consistent results with all tested techniques. 64-MDCT scan (A), high-resolution peripheral quantitative CT scan (B), and contact radiograph (C) show intact graft.

View larger version (153K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 3C —Sheep 7, consistent results with all tested techniques. 64-MDCT scan (A), high-resolution peripheral quantitative CT scan (B), and contact radiograph (C) show intact graft.

View larger version (11K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 4 —Graph shows results of statistical comparison of three imaging techniques with Mann-Whitney rank sum test.

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