UMEHARA Nobuhiro
   Department   School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine
   Position   Assistant Professor
Language English
Title The Effectiveness of Metal Artifact Reduction Algorithm CT in Cases of VAD Driveline Infection
Conference The 81st Annual Scientific Meeting of the Japanese Circulation Society (JCS2017)
Promoters Japanese Circulation Society
Conference Type Nationwide Conferences
Presentation Type Poster notice
Lecture Type General
Publisher and common publisher◎TATEISHI Minori, HATTORI Hidetoshi, KATSUBE Takeshi, UMEHARA Nobuhiro, SAITO Satoshi, SAKAI Shuji, NUNODA Shinichi, YAMAZAKI Kenji
Date 2017/03/18
(city and name of the country)
Kanazawa, JAPAN
Society abstract PROGRAM JCS 2017 272
Summary 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.