Toward Time Resolved Cardiac CT Images with Patient Dose Reduction: Image-based Motion Estimation

Author

Taguchi, Katsuyuki ; Segars, William P. ; Kudo, Hiroyuki ; Frey, Eric C. ; Fishman, Elliot K. ; Tsui, Benjamin M W

Author_Institution

Russell H. Morgan Dept. of Radiol. & Radiol. Sci., Johns Hopkins Univ., Baltimore, MD

Volume

4

fYear

2006

fDate

Oct. 29 2006-Nov. 1 2006

Firstpage

2029

Lastpage

2032

Abstract

Two major problems with the current electrocardiogram-gated cardiac CT imaging technique are a large patient radiation dose and insufficient temporal resolution. Our long-term goal is to develop new time resolved and low dose cardiac CT imaging techniques that consist of image reconstruction algorithms and estimation methods of the time-dependent motion vector field of the heart from the acquired CT data. Toward this goal, we developed a method that estimates the 2D components of the motion vector field from a sequence of cardiac CT images.

Keywords

biomedical imaging; computerised tomography; electrocardiography; image reconstruction; medical signal processing; motion estimation; phantoms; 2D motion vector field components; cardiac motion vector field; electrocardiogram gated cardiac CT imaging; image based motion estimation; image reconstruction algorithms; low dose cardiac CT imaging; patient radiation dose reduction; temporal resolution; time dependent motion vector field estimation; time resolved cardiac CT images; Biomedical imaging; Computed tomography; Heart; Helium; Image reconstruction; Image resolution; Motion estimation; Motion measurement; Nuclear and plasma sciences; Radiology; Computed tomography; cardiac; motion estimation; temporal resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2006. IEEE

Conference_Location

San Diego, CA

ISSN

1095-7863

Print_ISBN

1-4244-0560-2

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2006.354312

Filename

4179426