fa Reduction of dark-band-like metal artifacts caused by dental implant bodies using hypothetical monoenergetic imaging after dual-energy computed tomography رادیولوژی دهان، فک و صورت Oral and Maxillofacial Radiology پژوهشي Research <p> <strong>Objective</strong></p><p>  The aim of this study was to evaluate the usefulness of hypothetical monoenergetic images after dual-energy computed tomography (DECT) for assessment of the bone encircling dental implant bodies. </p><p> <strong>Study design</strong></p><p>  Seventy-two axial images of implantation sites clipped out from image data scanned using DECT in dual-energy mode were used. Subjective assessment on reduction of dark-band-like artifacts (R-DBAs) and diagnosability of adjacent bone condition (D-ABC) in 3 sets of DECT images—a fused image set (DE120) and 2 sets of hypothetical monoenergetic images (ME100, ME190)—was performed and the results were statistically analyzed. </p><p> <strong>Results</strong></p><p>  With regards to R-DBAs and D-ABC, significant differences among DE120, ME100, and ME190 were observed. The ME100 and ME190 images revealed more artifact reduction and diagnosability than those of DE120. </p><p> <strong>Conclusions</strong></p><p>  DECT imaging followed by hypothetical monoenergetic image construction can cause R-DBAs and increase D-ABC and may be potentially used for the evaluation of postoperative changes in the bone encircling implant bodies. </p><hr><p></p><p> <strong>Source: </strong>Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology </p><p> <a href="http://www.oooojournal.net/article/S2212-4403(13)00174-0/abstract" target="_blank"><font color="#0000ff">Full Text</font></a></p> 0 0 http://idai.ir/browse.php?a_code=A-10-32-1643&slc_lang=fa&sid=1 Ray Tanaka 10031947532846007680 10031947532846007680 No Division of Oral and Maxillofacial Radiology, Department of Tissue Regeneration and Reconstruction, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan Takafumi Hayashi 10031947532846007681 10031947532846007681 No Division of Oral and Maxillofacial Radiology, Department of Tissue Regeneration and Reconstruction, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan Makiko Ike 10031947532846007682 10031947532846007682 No Division of Oral and Maxillofacial Radiology, Department of Tissue Regeneration and Reconstruction, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan Yoshiyuki Noto 10031947532846007683 10031947532846007683 No Department of Radiology, Niigata University Medical and Dental Hospital, Niigata, Japan Tazuko K.Goto 10031947532846007684 10031947532846007684 Yes Oral Diagnosis and Polyclinics, Faculty of Dentistry, University of Hong Kong, Hong Kong