Conformal geometry based supine and prone colon registration Conference

Zeng, W, Marino, J, Gu, X et al. (2011). Conformal geometry based supine and prone colon registration . LECTURE NOTES IN COMPUTER SCIENCE, 6668 LNCS 113-119. 10.1007/978-3-642-25719-3_16

cited authors

  • Zeng, W; Marino, J; Gu, X; Kaufman, A

authors

abstract

  • In virtual colonoscopy, CT scans are typically acquired with the patient in both supine and prone positions. The registration of these two scans is desirable so that the physician can clarify situations or confirm polyp findings at a location in one scan with the same location in the other, thereby improving polyp detection rates and reducing false positives. However, this supine-prone registration is challenging because of the substantial distortions in the colon shape due to the patient's position shifting. We present an efficient algorithm and framework for performing this registration through the use of conformal geometry to guarantee the registration is a diffeomorphism. The colon surface is conformally flattened to a rectangle using holomorphic differentials. The flattened domains of supine and prone are aligned by the harmonic map with feature correspondence constraints. We demonstrate the efficiency and efficacy of our method by measuring the distance between features on the registered colons. © 2011 Springer-Verlag.

publication date

  • December 23, 2011

published in

Digital Object Identifier (DOI)

start page

  • 113

end page

  • 119

volume

  • 6668 LNCS