MR imaging artifacts and parallel imaging techniques with calibration scanning: A new twist on old problems

Nathan E. Yanasak, Michael J. Kelly

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The application of parallel magnetic resonance (MR) imaging is increasing as clinicians continue to strive for improved spatial and temporal resolution, benefts that arise from the use of fewer phase encodings during imaging. To reconstruct images, extra information is needed to map the spatial sensitivity of each coil element, which may be accomplished by acquiring a calibration image in one common implementation of parallel MR imaging. Although obtaining a quick calibration image is an efficient method for gathering this information, corruption of the image or disharmony with subsequent images may lead to errors in reconstruction. Although conventional MR imaging sequences may be employed with parallel MR imaging, the altered image reconstruction introduces several new artifacts and changes the appearance of conventional artifacts. The altered appearance of traditional artifacts may obscure the source of the problem, and, in some cases, the severity of artifacts associated with parallel MR imaging may be exacerbated, hindering image interpretation. Several artifacts arise in the context of parallel MR imaging, including both traditional artifacts and those associated with parallel MR imaging.

Original languageEnglish (US)
Pages (from-to)532-548
Number of pages17
JournalRadiographics
Volume34
Issue number2
DOIs
StatePublished - Mar 1 2014

Fingerprint

Artifacts
Calibration
Magnetic Resonance Imaging
Computer-Assisted Image Processing

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

MR imaging artifacts and parallel imaging techniques with calibration scanning : A new twist on old problems. / Yanasak, Nathan E.; Kelly, Michael J.

In: Radiographics, Vol. 34, No. 2, 01.03.2014, p. 532-548.

Research output: Contribution to journalArticle

@article{ad359bce386a41b792700e20903ddcd5,
title = "MR imaging artifacts and parallel imaging techniques with calibration scanning: A new twist on old problems",
abstract = "The application of parallel magnetic resonance (MR) imaging is increasing as clinicians continue to strive for improved spatial and temporal resolution, benefts that arise from the use of fewer phase encodings during imaging. To reconstruct images, extra information is needed to map the spatial sensitivity of each coil element, which may be accomplished by acquiring a calibration image in one common implementation of parallel MR imaging. Although obtaining a quick calibration image is an efficient method for gathering this information, corruption of the image or disharmony with subsequent images may lead to errors in reconstruction. Although conventional MR imaging sequences may be employed with parallel MR imaging, the altered image reconstruction introduces several new artifacts and changes the appearance of conventional artifacts. The altered appearance of traditional artifacts may obscure the source of the problem, and, in some cases, the severity of artifacts associated with parallel MR imaging may be exacerbated, hindering image interpretation. Several artifacts arise in the context of parallel MR imaging, including both traditional artifacts and those associated with parallel MR imaging.",
author = "Yanasak, {Nathan E.} and Kelly, {Michael J.}",
year = "2014",
month = "3",
day = "1",
doi = "10.1148/rg.342135051",
language = "English (US)",
volume = "34",
pages = "532--548",
journal = "Radiographics",
issn = "0271-5333",
publisher = "Radiological Society of North America Inc.",
number = "2",

}

TY - JOUR

T1 - MR imaging artifacts and parallel imaging techniques with calibration scanning

T2 - A new twist on old problems

AU - Yanasak, Nathan E.

AU - Kelly, Michael J.

PY - 2014/3/1

Y1 - 2014/3/1

N2 - The application of parallel magnetic resonance (MR) imaging is increasing as clinicians continue to strive for improved spatial and temporal resolution, benefts that arise from the use of fewer phase encodings during imaging. To reconstruct images, extra information is needed to map the spatial sensitivity of each coil element, which may be accomplished by acquiring a calibration image in one common implementation of parallel MR imaging. Although obtaining a quick calibration image is an efficient method for gathering this information, corruption of the image or disharmony with subsequent images may lead to errors in reconstruction. Although conventional MR imaging sequences may be employed with parallel MR imaging, the altered image reconstruction introduces several new artifacts and changes the appearance of conventional artifacts. The altered appearance of traditional artifacts may obscure the source of the problem, and, in some cases, the severity of artifacts associated with parallel MR imaging may be exacerbated, hindering image interpretation. Several artifacts arise in the context of parallel MR imaging, including both traditional artifacts and those associated with parallel MR imaging.

AB - The application of parallel magnetic resonance (MR) imaging is increasing as clinicians continue to strive for improved spatial and temporal resolution, benefts that arise from the use of fewer phase encodings during imaging. To reconstruct images, extra information is needed to map the spatial sensitivity of each coil element, which may be accomplished by acquiring a calibration image in one common implementation of parallel MR imaging. Although obtaining a quick calibration image is an efficient method for gathering this information, corruption of the image or disharmony with subsequent images may lead to errors in reconstruction. Although conventional MR imaging sequences may be employed with parallel MR imaging, the altered image reconstruction introduces several new artifacts and changes the appearance of conventional artifacts. The altered appearance of traditional artifacts may obscure the source of the problem, and, in some cases, the severity of artifacts associated with parallel MR imaging may be exacerbated, hindering image interpretation. Several artifacts arise in the context of parallel MR imaging, including both traditional artifacts and those associated with parallel MR imaging.

UR - http://www.scopus.com/inward/record.url?scp=84896814007&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84896814007&partnerID=8YFLogxK

U2 - 10.1148/rg.342135051

DO - 10.1148/rg.342135051

M3 - Article

C2 - 24617696

AN - SCOPUS:84896814007

VL - 34

SP - 532

EP - 548

JO - Radiographics

JF - Radiographics

SN - 0271-5333

IS - 2

ER -