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Clinical Applications to Orthopaedics by New X-ray Technology

Clinical Applications to Orthopaedics by New X-ray Technology
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Clinical Applications to Orthopaedics by New X-ray Technology - 1

Evening Seminar at the 83rd Annual Meeting of the Japanese Orthopaedic Association Clinical Applications Slot Radiography and Dual Energy Subtraction — Imaging technique and clinical application to orthopaedics Takatoshi AOKI Associate Professor, Department of Radiology, University of Occupational and Environmental Health Utility of Tomosynthesis and Slot Radiography Hiroyuki TSUCHIYA Professor and Chairman, Department of Restorative Medicine of Neuro-Musculoskeletal System (Orthopaedic Surgery) Kanazawa University Graduate School of Medical Science Shimadzu Corporation

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Clinical Applications to Orthopaedics by New X-ray Technology - 2

Special Report Clinical Applications to Orthopaedics by New X-ray Technology At the 83 rd Annual Meeting of the Japanese Orthopaedic Association held between Thursday, 27 May, and Sunday, 30 May, Shimadzu co-hosted Evening Seminar on the theme of“Clinical Applications to Orthopaedics by New X-ray Technology”on 29 May. The Seminar was chaired by Akinori SAKAI, M.D., Associate Professor, Department of Orthopaedic Surgery, University of Occupational and Environmental Health. Lectures were given by Takatoshi AOKI, M.D., Associate Professor, Department of Radiology, University of Occupational...

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Clinical Applications to Orthopaedics by New X-ray Technology - 3

Special Report Clinical Applications to Orthopaedics by New X-ray Technology Based on image reconstruction for cone-beam CT, with correction for differences between rotation and parallel motion, and three-dimensional filtered back projection to remedy artifacts due to angular restrictions. /Parallel-plane scanning's Tomosynthesis data Tomosynthesis is a technology that obtains images on arbitrary parallel cross-sections through image recon- struction of multiple projected images taken by a single exposure. The image reconstruction is based on image reconstruction for cone-beam CT, with...

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Clinical Applications to Orthopaedics by New X-ray Technology - 4

Special Report Clinical Applications to Orthopaedics by New X-ray Technology 2006 Guideline for Medical Exposure (Plain Radiography) (A) Head (frontal) Tomosynthesis Tomosynthesis Entrance Radiography B/A Surface Dose Conditions (B) Rev. 3 . 80 Cervical vertebra (lateral) Knee joint Utility of Tomosynthesis and Slot Radiography to Orthopaedics Fig. 6　Comparison of 2006 Guideline for Medical Exposure (Plain Radiography) and Tomosynthesis Entrance Surface Dose Professor and Chairman, Department of Restorative Medicine of Neuro-Musculoskeletal System (Orthopaedic Surgery), Kanazawa University...

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Clinical Applications to Orthopaedics by New X-ray Technology - 5

Special Report Clinical Applications to Orthopaedics by New X-ray Technology Plain radiography Tomosynthesis Plain radiography Permits easy evaluation of the bone union and metal plate by 2D image Focusing on the bone union provides clear observations (Useful for evaluation of callus formation) Data analysis provides 3-D represen- tation but the image close to metal implant is easily affected by metal Fig. 3 Images of Proximal Femur Checking bone formation (post-operative) Plain radiography Make montage image from acetabular roof Fig. 5 Evaluation of the boundary conditions of femur...

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Clinical Applications to Orthopaedics by New X-ray Technology - 6

Special Report Clinical Applications to Orthopaedics by New X-ray Technology After corrective surgery on both legs (left), scoliosis (center, right) Fig. 10　 valuation of Alignment of Lower Limbs by E Slot Radiography Utility of Slot Radiography Slot radiography offered by SONIALVISION safire can easily take seamless slot images to produce frontal or lateral images of the spine or lower extremities more rapidly than conventional CR (Fig. 9 ). At this hospital, slot radiography is mainly used to evaluate alignment of the lower limbs after artificial joint implant surgery or for scoliosis....

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