タテイシ　ミノリ   Tateishi Minori   立石　実    所属   医学部 医学科（東京女子医科大学病院）    職種   助教
言語種別	英語
発表タイトル	The Effectiveness of Metal Artifact Reduction Algorithm CT in Cases of VAD Driveline Infection
会議名	The 81st Annual Scientific Meeting of the Japanese Circulation Society (JCS2017)
主催者	Japanese Circulation Society
学会区分	全国規模の学会
発表形式	ポスター掲示
講演区分	一般
発表者・共同発表者	◎TATEISHI Minori, HATTORI Hidetoshi, KATSUBE Takeshi, UMEHARA Nobuhiro, SAITO Satoshi, SAKAI Shuji, NUNODA Shinichi, YAMAZAKI Kenji
発表年月日	2017/03/18
開催地 （都市, 国名）	Kanazawa, JAPAN
学会抄録	PROGRAM JCS 2017 272
概要	BACKGROUND: Driveline infection (DLI) after surgery to implant a ventricular assist device (VAD) is the main complications. However, CT and ultrasonography are limited in visibility surrounding the driveline due to artifacts. Since May 2016, our hospital began using a 320-slice CT scanner (Toshiba, Aquilion ONE) with Single Energy Metal Artifact Reduction (SEMAR) metal artifact reduction algorithm in patients suspected of driveline infection. PURPOSE: The purpose of this study was to investigate the effectiveness of SEMAR by comparing images reconstructed using filtered back projection (FBP) and SEMAR. SUBJECTS AND METHODS: The subjects were 7 patients suspected of driveline infection after VAD implantation surgery (EVAHEART: 4, HeartMate II: 3 patients, 2 patients were women, mean age at time of implantation: 36.3±13.4, mean period of implantation: 636.3±353.9 days). A total of 13 plain CT images were utilized. RESULTS: Two out of the 7 cases required surgical intervention due to worsening of the DLI. Of the 2 cases, all 6 CT images reconstructed using SEMAR were useful in identifying DLI. It was difficult to identify the driveline infections in these 2 cases when FBP was used due to the presence of artifacts. CONCLUSION: SEMAR reduced the artifacts in the tissue surrounding the driveline, which improved visibility. SEMAR is useful in detecting DLI and in determining the necessity of surgical intervention.