Objective evaluation of the correction by non-rigid registration of abdominal organ motion in low-dose 4D dynamic contrast-enhanced CT

Jim Piper, Yoshihiro Ikeda, Yasuko Fujisawa, Yoshiharu Ohno, Takeshi Yoshikawa, Alison Oneil, Ian Poole

研究成果: Article査読

14 被引用数 (Scopus)

抄録

We objectively evaluate a straightforward registration method for correcting respiration-induced movement of abdominal organs in CT perfusion studies by measuring the distributions of alignment errors between corresponding landmark pairs. We introduce the concept and describe the advantages of using the surface-normal component of distance between pairs of corresponding landmarks selected so that their surface normal is in one of the three coordinate axis directions, and show that such landmarks can be precisely placed with respect to the surface normal. Using a large population of landmark pairs on a substantial quantity of 4D dynamic contrast-enhanced CT volume data, we quantify the average alignment errors of abdominal organs that remain uncorrected by registration.

本文言語English
ページ(範囲)1701-1715
ページ数15
ジャーナルPhysics in Medicine and Biology
57
6
DOI
出版ステータスPublished - 21-03-2012
外部発表はい

All Science Journal Classification (ASJC) codes

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging

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