論文

査読有り
2017年5月

Registration error of the liver CT using deformable image registration of MIM Maestro and Velocity AI

BMC MEDICAL IMAGING
  • Nobuyoshi Fukumitsu
  • ,
  • Kazunori Nitta
  • ,
  • Toshiyuki Terunuma
  • ,
  • Toshiyuki Okumura
  • ,
  • Haruko Numajiri
  • ,
  • Yoshiko Oshiro
  • ,
  • Kayoko Ohnishi
  • ,
  • Masashi Mizumoto
  • ,
  • Teruhito Aihara
  • ,
  • Hitoshi Ishikawa
  • ,
  • Koji Tsuboi
  • ,
  • Hideyuki Sakurai

17
1
開始ページ
30
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1186/s12880-017-0202-z
出版者・発行元
BIOMED CENTRAL LTD

Background: Understanding the irradiated area and dose correctly is important for the reirradiation of organs that deform after irradiation, such as the liver. We investigated the spatial registration error using the deformable image registration (DIR) software products MIM Maestro (MIM) and Velocity AI (Velocity).
Methods: Image registration of pretreatment computed tomography (CT) and posttreatment CT was performed in 24 patients with liver tumors. All the patients received proton beam therapy, and the follow-up period was 4-14 (median: 10) months. We performed DIR of the pretreatment CT and compared it with that of the posttreatment CT by calculating the dislocation of metallic markers (implanted close to the tumors).
Results: The fiducial registration error was comparable in both products: 0.4-32.9 (9.3 +/- 9.9) mm for MIM and 0.5-38.6 (11.0 +/- 10.0) mm for Velocity, and correlated with the tumor diameter for MIM (r = 0.69, P = 0.002) and for Velocity (r = 0.68, P = 0.0003). Regarding the enhancement effect, the fiducial registration error was 1.0-24.9 (7.4 +/- 7.7) mm for MIM and 0.3-29.6 (8.9 +/- 7.2) mm for Velocity, which is shorter than that of plain CT (P = 0.04, for both).
Conclusions: The DIR performance of both MIM and Velocity is comparable with regard to the liver. The fiducial registration error of DIR depends on the tumor diameter. Furthermore, contrast-enhanced CT improves the accuracy of both MIM and Velocity.

Web of Science ® 被引用回数 : 9

リンク情報
DOI
https://doi.org/10.1186/s12880-017-0202-z
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/28472925
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000400730400002&DestApp=WOS_CPL
ID情報
  • DOI : 10.1186/s12880-017-0202-z
  • ISSN : 1471-2342
  • PubMed ID : 28472925
  • Web of Science ID : WOS:000400730400002

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