Improvement of the cine-CT based 4D-CT imaging

Journal Article · Thu Nov 15 04:00:00 EST 2007 · Medical Physics

DOI:https://doi.org/10.1118/1.2794225· OSTI ID:21032859

Tinsu, Pan; Xiaojun, Sun; Dershan, Luo ^[1]

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1. Department of Imaging Physics, M. D. Anderson Cancer Center, University of Texas, Houston, Texas 77030 (United States)

An improved 4D-CT utility has been developed on the GE LightSpeed multislice CT (MSCT) and Discovery PET/CT scanners, which have the cine CT scan capability. Two new features have been added in this 4D-CT over the commercial Advantage 4D-CT from GE. One feature was a new tool for disabling parts of the respiratory signal with irregular respiration and improving the accuracy of phase determination for the respiratory signal from the Varian real-time positioning and monitoring (RPM) system before sorting of the cine CT images into the 4D-CT images. The second feature was to allow generation of the maximum-intensity-projection (MIP), average (AVG) and minimum-intensity-projection (mip) CT images from the cine CT images without a respiratory signal. The implementation enables the assessment of tumor motion in treatment planning with the MIP, AVG, and mip CT images on the GE MSCT and PET/CT scanners without the RPM and the Advantage 4D-CT with a GE Advantage windows workstation. Several clinical examples are included to illustrate this new application.

• OSTI ID: 21032859
• Journal Information: Medical Physics, Journal Name: Medical Physics Journal Issue: 11 Vol. 34; ISSN 0094-2405; ISSN MPHYA6
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
ACCURACY
BIOMEDICAL RADIOGRAPHY
COMPUTERIZED TOMOGRAPHY
IMAGE PROCESSING
NEOPLASMS
PATIENTS
POSITIONING
RESPIRATION
TOOLS