Department School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine Position Assistant Professor
|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|
|Publisher and common publisher||◎TATEISHI Minori, HATTORI Hidetoshi, KATSUBE Takeshi, UMEHARA Nobuhiro, SAITO Satoshi, SAKAI Shuji, NUNODA Shinichi, YAMAZAKI Kenji|
(city and name of the country)
|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.