Instrument visualization using conventional and compressed sensing SEMAC for interventional MRI at 3T.

Sonnow, Lena; Gilson, Wesley D.; Raithel, Esther; Nittka, Mathias; Wacker, Frank; Fritz, Jan

doi:10.1002/jmri.25858

by Lena Sonnow, Wesley D. Gilson, Esther Raithel, Mathias Nittka, Frank Wacker, Jan Fritz

Abstract:

BACKGROUND: Interventional magnetic resonance imaging (MRI) at 3T benefits from higher spatial and temporal resolution, but artifacts of metallic instruments are often larger and may obscure target structures. PURPOSE: To test that compressed sensing (CS) slice-encoding metal artifact correction (SEMAC) is feasible for 3T interventional MRI and affords more accurate instrument visualization than turbo spin echo (TSE) and gradient echo (GRE) techniques, and facilitates faster data acquisition than conventional SEMAC. STUDY TYPE: Prospective. PHANTOM AND SUBJECTS: Cadaveric animal and 20 human subjects. FIELD STRENGTH/SEQUENCE: TSE (acquisition time 31 sec), GRE (28-33 sec), SEMAC (128 sec), and CS-SEMAC (57 sec) pulse sequences were evaluated at 3T. ASSESSMENT: Artifact width and length, signal-to-noise (SNR), and contrast-to-noise (CNR) ratios of 14-22G

Reference:

Instrument visualization using conventional and compressed sensing SEMAC for interventional MRI at 3T. (Lena Sonnow, Wesley D. Gilson, Esther Raithel, Mathias Nittka, Frank Wacker, Jan Fritz), In Journal of magnetic resonance imaging : JMRI, 2017.

Bibtex Entry:

@article{sonnow_instrument_2017,
	title = {Instrument visualization using conventional and compressed sensing {SEMAC} for interventional {MRI} at 3T.},
	copyright = {(c) 2017 International Society for Magnetic Resonance in Medicine.},
	issn = {1522-2586 1053-1807},
	doi = {10.1002/jmri.25858},
	abstract = {BACKGROUND: Interventional magnetic resonance imaging (MRI) at 3T benefits from higher spatial and temporal resolution, but artifacts of metallic instruments are often larger and may obscure target structures. PURPOSE: To test that compressed sensing (CS) slice-encoding metal artifact correction (SEMAC) is feasible for 3T interventional MRI and affords more accurate instrument visualization than turbo spin echo (TSE) and gradient echo (GRE) techniques, and facilitates faster data acquisition than conventional SEMAC. STUDY TYPE: Prospective. PHANTOM AND SUBJECTS: Cadaveric animal and 20 human subjects. FIELD STRENGTH/SEQUENCE: TSE (acquisition time 31 sec), GRE (28-33 sec), SEMAC (128 sec), and CS-SEMAC (57 sec) pulse sequences were evaluated at 3T. ASSESSMENT: Artifact width and length, signal-to-noise (SNR), and contrast-to-noise (CNR) ratios of 14-22G},
	language = {eng},
	number = {47 (5)},
	journal = {Journal of magnetic resonance imaging : JMRI},
	author = {Sonnow, Lena and Gilson, Wesley D. and Raithel, Esther and Nittka, Mathias and Wacker, Frank and Fritz, Jan},
	month = sep,
	year = {2017},
	pmid = {28940951},
	keywords = {3T, artifact, compressed sensing, interventional MRI, needle, SEMAC},
	pages = {1306--1315}
}