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Diffusion-weighted imaging in the prostate: an apparent diffusion coefficient comparison of half-Fourier acquisition single-shot turbo spin-echo and echo planar imaging.
Magn Reson Imaging. 2012 Feb; 30(2):189-94.MR

Abstract

Prostate cancer detection using diffusion-weighted imaging is highly affected by the accuracy of the apparent diffusion coefficient (ADC) values in an image. Echo planar imaging (EPI) is a fast sequence commonly used for diffusion imaging but has inherent magnetic susceptibility and chemical shift artefacts associated. A diffusion sequence that is less affected by these artefacts is therefore advantageous. The half-Fourier acquisition single-shot turbo spin-echo (HASTE) sequence was chosen. The diffusion sequences were compared in image quality, repeatability of the ADC value and the effect on the ADC value with varied b values. Eight volunteers underwent three scans of each sequence, on a 1.5-T Siemens system, using b values of 0, 150, 300, 450, 600, 750, 900 and 1000 s/mm(2). ADC maps were created to address the reproducibility of the ADC value when using two b values compared to eight b values. The ADC value using all b values with the HASTE sequence gave the best performance in all tested categories. Both sequences gave significantly different ADC mean values for two b values compared to when using eight b values (P<.05) suggesting larger error is present when using two b values. HASTE was shown to be an improvement over EPI in terms of repeatability, signal variation within a region of interest and standard deviation over the volunteer set. The improved accuracy of the ADC value in the HASTE sequence makes it potentially a more sensitive tumor detection technique.

Authors+Show Affiliations

Centre for Advanced Imaging, University of Queensland, Brisbane, Australia. ben1brooks@gmail.comNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

22055748

Citation

Babourina-Brooks, Ben, et al. "Diffusion-weighted Imaging in the Prostate: an Apparent Diffusion Coefficient Comparison of half-Fourier Acquisition Single-shot Turbo Spin-echo and Echo Planar Imaging." Magnetic Resonance Imaging, vol. 30, no. 2, 2012, pp. 189-94.
Babourina-Brooks B, Cowin GJ, Wang D. Diffusion-weighted imaging in the prostate: an apparent diffusion coefficient comparison of half-Fourier acquisition single-shot turbo spin-echo and echo planar imaging. Magn Reson Imaging. 2012;30(2):189-94.
Babourina-Brooks, B., Cowin, G. J., & Wang, D. (2012). Diffusion-weighted imaging in the prostate: an apparent diffusion coefficient comparison of half-Fourier acquisition single-shot turbo spin-echo and echo planar imaging. Magnetic Resonance Imaging, 30(2), 189-94. https://doi.org/10.1016/j.mri.2011.09.024
Babourina-Brooks B, Cowin GJ, Wang D. Diffusion-weighted Imaging in the Prostate: an Apparent Diffusion Coefficient Comparison of half-Fourier Acquisition Single-shot Turbo Spin-echo and Echo Planar Imaging. Magn Reson Imaging. 2012;30(2):189-94. PubMed PMID: 22055748.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Diffusion-weighted imaging in the prostate: an apparent diffusion coefficient comparison of half-Fourier acquisition single-shot turbo spin-echo and echo planar imaging. AU - Babourina-Brooks,Ben, AU - Cowin,Gary J, AU - Wang,Deming, Y1 - 2011/11/04/ PY - 2011/06/29/received PY - 2011/09/28/revised PY - 2011/09/28/accepted PY - 2011/11/8/entrez PY - 2011/11/8/pubmed PY - 2012/5/18/medline SP - 189 EP - 94 JF - Magnetic resonance imaging JO - Magn Reson Imaging VL - 30 IS - 2 N2 - Prostate cancer detection using diffusion-weighted imaging is highly affected by the accuracy of the apparent diffusion coefficient (ADC) values in an image. Echo planar imaging (EPI) is a fast sequence commonly used for diffusion imaging but has inherent magnetic susceptibility and chemical shift artefacts associated. A diffusion sequence that is less affected by these artefacts is therefore advantageous. The half-Fourier acquisition single-shot turbo spin-echo (HASTE) sequence was chosen. The diffusion sequences were compared in image quality, repeatability of the ADC value and the effect on the ADC value with varied b values. Eight volunteers underwent three scans of each sequence, on a 1.5-T Siemens system, using b values of 0, 150, 300, 450, 600, 750, 900 and 1000 s/mm(2). ADC maps were created to address the reproducibility of the ADC value when using two b values compared to eight b values. The ADC value using all b values with the HASTE sequence gave the best performance in all tested categories. Both sequences gave significantly different ADC mean values for two b values compared to when using eight b values (P<.05) suggesting larger error is present when using two b values. HASTE was shown to be an improvement over EPI in terms of repeatability, signal variation within a region of interest and standard deviation over the volunteer set. The improved accuracy of the ADC value in the HASTE sequence makes it potentially a more sensitive tumor detection technique. SN - 1873-5894 UR - https://www.unboundmedicine.com/medline/citation/22055748/Diffusion_weighted_imaging_in_the_prostate:_an_apparent_diffusion_coefficient_comparison_of_half_Fourier_acquisition_single_shot_turbo_spin_echo_and_echo_planar_imaging_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0730-725X(11)00356-0 DB - PRIME DP - Unbound Medicine ER -