On perspective maximum intensity projection of CRA data

Ramesh R. Galigekere, David W. Holdsworth

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Three-dimensional (3D) computed rotational angiography (CRA) using an X-ray image intensifier based C-arm imaging system is a relatively new modality useful in cerebral angiography and neuro-interventional surgical procedures. In this paper, we present and study several algorithms for estimating the perspective maximum intensity projection (MIP) - PMIP - of CRA (neuro-angiographic) data. The nature of the data, intended applications and the associated approximations differ from those in spiral CT and MR angiography (in which parallel MIP is used extensively). Of relevance is perspective geometry, the intrinsic parameters associated with which are those of the C-arm imaging system. Its relatively small X-ray cone-angle makes the voxel driven method viable for certain applications. Consequently, the voxel-driven method is considered in greater detail. Sparseness of neuro-angiographic data allows thresholding, and hence acceleration. This feature is useful for a rapid preview and as an aid to 2D/3D registration. Post-processing for improving the quality of voxel-driven PMIP is discussed, and an adaptive algorithm is proposed in the context. Results of PMIP of data acquired by scanning patients with a prototype C-arm system are presented.

Original languageEnglish
Pages (from-to)688-699
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4681
DOIs
Publication statusPublished - 01-01-2002

Fingerprint

Angiography
angiography
Voxel
projection
Projection
Imaging System
Imaging systems
Image Intensifier
X rays
image intensifiers
Thresholding
Adaptive algorithms
Adaptive Algorithm
Post-processing
Modality
Registration
Cones
Scanning
cones
x rays

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

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On perspective maximum intensity projection of CRA data. / Galigekere, Ramesh R.; Holdsworth, David W.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 4681, 01.01.2002, p. 688-699.

Research output: Contribution to journalConference article

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