A line profile-based double partial fusion method for acquiring planning CT of oversized patients in radiation treatment

Huanmei Wu, Qingya Zhao, Minsong Cao, Indra Das

Research output: Contribution to journalArticle

Abstract

True 3D CT dataset for treatment planning of an oversized patient is difficult to acquire due to the bore size and field of view (FOV) reconstruction. This project aims to provide a simple approach to reconstruct true CT data for oversize patients using CT scanner with limited FOV by acquiring double partial CT (left and right side) images. An efficient line profile-based method has been developed to minimize the difference of the CT numbers in the overlapping region between the right and left images and to generate a complete true 3D CT dataset in the natural state. New image processing modules have been developed and integrated to the Insight Segmentation & Registration Toolkit (ITK 3.6) package. For example, different modules for image cropping, line profile generation, line profile matching, and optimized partial image fusion have been developed. The algorithm has been implemented for images containing the bony structure of the spine and tested on 3D CT planning datasets from both phantom and real patients with satisfactory results in both cases. The proposed optimized line profile-based partial registration method provides a simple and accurate method for acquiring a complete true 3D CT dataset for an oversized patient using CT scanning with small bore size, that can be used for accurate treatment planning.

Original languageEnglish
Pages (from-to)20-31
Number of pages12
JournalJournal of Applied Clinical Medical Physics
Volume13
Issue number2
StatePublished - 2012

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planning
fusion
Radiation
Planning
radiation
profiles
Image fusion
field of view
modules
Image processing
Therapeutics
cavities
spine
Scanning
Spine
scanners
image processing
Datasets
scanning

Keywords

  • Double scanning
  • Oversized patients
  • Partial registration
  • Planning CT

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiation
  • Instrumentation

Cite this

A line profile-based double partial fusion method for acquiring planning CT of oversized patients in radiation treatment. / Wu, Huanmei; Zhao, Qingya; Cao, Minsong; Das, Indra.

In: Journal of Applied Clinical Medical Physics, Vol. 13, No. 2, 2012, p. 20-31.

Research output: Contribution to journalArticle

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