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Inner volume MR imaging: technical concepts and their application.

D A Feinberg, J C Hoenninger, L E Crooks

    Radiology
    |September 1, 1985
    PubMed
    Summary
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    This study introduces inner volume magnetic resonance imaging (MRI) to create detailed images of specific body areas. This technique reduces motion artifacts and improves signal from blood flow without cardiac gating.

    Area of Science:

    • Medical Imaging
    • Biophysics
    • Radiology

    Background:

    • Cross-sectional magnetic resonance imaging (MRI) is effective for large tissue areas.
    • Examination of specific subsections often requires specialized techniques.
    • Motion artifacts, particularly from respiration, can degrade image quality.

    Purpose of the Study:

    • To describe a technique for acquiring high-resolution images of subsectional regions.
    • To demonstrate the advantages of "inner volume" imaging.
    • To improve imaging efficiency and reduce motion-related artifacts.

    Main Methods:

    • Utilizing orthogonally directed, selectively irradiated planes with varying flip angles.
    • Reconstructing two- or three-dimensional volume images from spatially limited signal regions.

    Related Experiment Videos

  • Acquiring images with limited fields-of-view for reduced imaging time.

    • Main Results:

    • Inner volume imaging effectively eliminates respiratory motion artifacts by excluding moving tissues.
    • The technique yields a high signal from rapid pulsatile blood flow.
    • Cardiac gating is not required to achieve good blood flow signal.

    Conclusions:

    • Inner volume MRI offers a method for detailed examination of specific anatomical regions.
    • This technique enhances image quality by minimizing motion artifacts.
    • It provides improved visualization of blood flow dynamics without complex pulse sequences.