Temporal Subtraction Technique with High Speed by Use of Hierarchical Image Registration for Thoracic MDCT Image

DOI Web Site 14 References

Bibliographic Information

Other Title
  • 階層的画像位置合わせによる胸部マルチスライスCT画像の経時的差分処理の高速化
  • カイソウテキ ガゾウ イチ アワセ ニ ヨル キョウブ マルチスライス CT ガゾウ ノ ケイジテキ サブン ショリ ノ コウソクカ

Search this article

Abstract

Recently, study on CAD system is addressed. The CAD system can assist to medical doctor for diagnosis in visual screening. Temporal subtraction method is the one of techniques for implementation of CAD. The temporal subtraction method, which enhances temporal changes such as new lesions, is useful for thoracic CT diagnostic imaging. To achieve a temporal subtraction method, image registration technique is required as essential procedure. If the image registration procedure is implemented insufficiently, subtraction artifacts are remained as the result of miss-registration on temporal subtraction image. Also, in the case of using thoracic MDCT, 3-dimensional image registration is applied for temporal subtraction method. However, because of the complication of temporal deformation on 3D region, large amount of calculation costs are required for the image registration between current image and previous one. In this study, to reduce computational time for temporal subtraction on thoracic MDCT, we have developed hierarchical 3D image registration method based on octree data structure. Some experimental results are shown with discussion.

Journal

References(14)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top