Quality control of diffusion weighted images

Zhexing Liu, Yi Wang, Guido Gerig, Sylvain Gouttard, Ran Tao, Thomas Fletcher, Martin Styner

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Diffusion Tensor Imaging (DTI) has become an important MRI procedure to investigate the integrity of white matter in brain in vivo. DTI is estimated from a series of acquired Diffusion Weighted Imaging (DWI) volumes. DWI data suffers from inherent low SNR, overall long scanning time of multiple directional encoding with correspondingly large risk to encounter several kinds of artifacts. These artifacts can be too severe for a correct and stable estimation of the diffusion tensor. Thus, a quality control (QC) procedure is absolutely necessary for DTI studies. Currently, routine DTI QC procedures are conducted manually by visually checking the DWI data set in a gradient by gradient and slice by slice way. The results often suffer from low consistence across different data sets, lack of agreement of different experts, and difficulty to judge motion artifacts by qualitative inspection. Additionally considerable manpower is needed for this step due to the large number of images to QC, which is common for group comparison and longitudinal studies, especially with increasing number of diffusion gradient directions. We present a framework for automatic DWI QC. We developed a tool called DTIPrep which pipelines the QC steps with a detailed protocoling and reporting facility. And it is fully open source. This framework/tool has been successfully applied to several DTI studies with several hundred DWIs in our lab as well as collaborating labs in Utah and Iowa. In our studies, the tool provides a crucial piece for robust DTI analysis in brain white matter study.

    Original languageEnglish (US)
    Title of host publicationMedical Imaging 2010 - Advanced PACS-based Imaging Informatics and Therapeutic Applications
    DOIs
    StatePublished - 2010
    EventMedical Imaging 2010 - Advanced PACS-based Imaging Informatics and Therapeutic Applications - San Diego, CA, United States
    Duration: Feb 17 2010Feb 18 2010

    Publication series

    NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
    Volume7628
    ISSN (Print)1605-7422

    Other

    OtherMedical Imaging 2010 - Advanced PACS-based Imaging Informatics and Therapeutic Applications
    CountryUnited States
    CitySan Diego, CA
    Period2/17/102/18/10

    Keywords

    • Diffusion Tensor Imaging
    • Diffusion Weighted Imaging
    • Eddy Current Artifact
    • Intensity Artifact
    • Motion Artifact
    • Quality Control

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Biomaterials
    • Atomic and Molecular Physics, and Optics
    • Radiology Nuclear Medicine and imaging

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