A simulation study to assess SVD encoding for interventional MRI: effect of object rotation and needle insertion

Journal of Magnetic Resonance Imaging : JMRI
J L DuerkJ S Lewin

Abstract

Singular value decomposition (SVD) encoding offers great promise to provide high spatial and temporal resolution required for interventional MRI (I-MRI) (1). This study investigates its efficacy when (a) objects are rotated and (b) a small device (ie, a needle) is moved within anatomic structures. It was found that SVD-encoded MRI is biased toward the reference from which encoding vectors are derived, thus providing a potential limitation under conditions in which the object has undergone significant global change. Reference images with partial device insertion may be needed to accurately resolve the device or track the object motion. Theoretically, the differences between the reference and the object being imaged suggest that SVD encoding is suboptimal (in a minimum mean squared error sense). Other encoding/reconstruction algorithms may come closer to achieving the desired advantages in spatial and temporal fidelity.

References

Aug 1, 1994·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·G P ZientaraF A Jolesz

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Citations

Dec 16, 1998·Journal of Magnetic Resonance Imaging : JMRI·V Y KupermanD N Levin
Jan 6, 2001·Topics in Magnetic Resonance Imaging : TMRI·J S LewinJ L Duerk
Oct 24, 2007·AJR. American Journal of Roentgenology·Jonathan S LewinWarren R Selman
Feb 11, 2004·Magnetic Resonance Imaging Clinics of North America·Sabine FenchelJonathan S Lewin
Feb 13, 2001·Journal of Magnetic Resonance Imaging : JMRI·A ShankaranarayananJ L Duerk
May 20, 1999·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·S K Nagle, D N Levin

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