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Diffusion weighted imaging: a comprehensive evaluation of a fast spin echo DWI sequence with BLADE (PROPELLER) k-space sampling at 3 T, using a 32-channel head coil in acute brain ischemia.
Invest Radiol. 2009 Oct; 44(10):656-61.IR

Abstract

PURPOSE

To evaluate the signal-to-noise ratio (SNR) and diagnostic quality of diffusion weighted imaging (DWI) using a fast spin echo (FSE) sequence with BLADE k-space trajectory at 3 T in combination with a 32-channel head coil. The scan was compared with a standard spin echo (SE) echo-planar imaging (EPI) DWI and a high resolution SE EPI DWI sequence.

MATERIAL AND METHODS

Fourteen patients with acute brain ischemia were included in this Institutional Review Board approved study. All patients were evaluated with 3 different image sequences, using a 3 T scanner and a 32-channel head coil: (a) a standard SE EPI DWI (matrix size 192 x 192), (b) a high resolution SE EPI DWI (matrix size of 256 x 256) and (c) a FSE DWI BLADE (matrix size 192 x 192). The SNR of the 3 scans was compared in 10 healthy volunteers by a paired student t test. Image quality was evaluated with 4 dedicated questions in a blinded read: (1) The scans were ranked in terms of bulk susceptibility artifact. (2) The scan preference for diagnosis of any diffusion abnormality that might occur and (3) the preference for visualization of the diffusion abnormality actually present was determined. (4) The influence of bulk susceptibility on image evaluation for the diffusion abnormality present was assessed.

RESULTS

For visualization of the diffusion abnormality present, BLADE DWI was the scan sequence preferred most by both readers (reader 1: 41.7%, reader 2: 35.7%). For visualization of any diffusion abnormality present, BLADE DWI was the preferred scan in 13 of 14 cases for reader 1 (93%) and in 11 of 14 cases for reader 2 (78.6%). No high resolution SE EPI DWI scan was rated best by reader 1. Reader 2 rated the high resolution SE EPI DWI scan superior in only 1 of 56 judgments. The standard EPI DWI sequence (21.8 +/- 5.3) had in comparison to the high resolution EPI DWI (11.9 +/- 2.6) and the BLADE DWI scans (11.3 +/- 3.8) significantly higher SNR mean values.

CONCLUSION

Our preliminary data demonstrates the feasibility of a FSE EPI DWI scan with radial-like k-space sampling, using a 32-channel coil at 3 T in acute brain ischemia. The BLADE DWI was the preferred scan for the detection of acute diffusion abnormalities because of the lack of bulk susceptibility artifacts.

Authors+Show Affiliations

Department of Radiology, Scott and White Clinic and Hospital, Texas A&M University Health Science Center, Temple, Texas, USA. ulrike.attenberger@medma.uni-heidelberg.deNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

19724235

Citation

Attenberger, Ulrike I., et al. "Diffusion Weighted Imaging: a Comprehensive Evaluation of a Fast Spin Echo DWI Sequence With BLADE (PROPELLER) K-space Sampling at 3 T, Using a 32-channel Head Coil in Acute Brain Ischemia." Investigative Radiology, vol. 44, no. 10, 2009, pp. 656-61.
Attenberger UI, Runge VM, Stemmer A, et al. Diffusion weighted imaging: a comprehensive evaluation of a fast spin echo DWI sequence with BLADE (PROPELLER) k-space sampling at 3 T, using a 32-channel head coil in acute brain ischemia. Invest Radiol. 2009;44(10):656-61.
Attenberger, U. I., Runge, V. M., Stemmer, A., Williams, K. D., Naul, L. G., Michaely, H. J., Schoenberg, S. O., Reiser, M. F., & Wintersperger, B. J. (2009). Diffusion weighted imaging: a comprehensive evaluation of a fast spin echo DWI sequence with BLADE (PROPELLER) k-space sampling at 3 T, using a 32-channel head coil in acute brain ischemia. Investigative Radiology, 44(10), 656-61. https://doi.org/10.1097/RLI.0b013e3181af3f0e
Attenberger UI, et al. Diffusion Weighted Imaging: a Comprehensive Evaluation of a Fast Spin Echo DWI Sequence With BLADE (PROPELLER) K-space Sampling at 3 T, Using a 32-channel Head Coil in Acute Brain Ischemia. Invest Radiol. 2009;44(10):656-61. PubMed PMID: 19724235.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Diffusion weighted imaging: a comprehensive evaluation of a fast spin echo DWI sequence with BLADE (PROPELLER) k-space sampling at 3 T, using a 32-channel head coil in acute brain ischemia. AU - Attenberger,Ulrike I, AU - Runge,Val M, AU - Stemmer,Alto, AU - Williams,Kenneth D, AU - Naul,L Gill, AU - Michaely,Henrik J, AU - Schoenberg,Stefan O, AU - Reiser,Maximilian F, AU - Wintersperger,Bernd J, PY - 2009/9/3/entrez PY - 2009/9/3/pubmed PY - 2010/7/23/medline SP - 656 EP - 61 JF - Investigative radiology JO - Invest Radiol VL - 44 IS - 10 N2 - PURPOSE: To evaluate the signal-to-noise ratio (SNR) and diagnostic quality of diffusion weighted imaging (DWI) using a fast spin echo (FSE) sequence with BLADE k-space trajectory at 3 T in combination with a 32-channel head coil. The scan was compared with a standard spin echo (SE) echo-planar imaging (EPI) DWI and a high resolution SE EPI DWI sequence. MATERIAL AND METHODS: Fourteen patients with acute brain ischemia were included in this Institutional Review Board approved study. All patients were evaluated with 3 different image sequences, using a 3 T scanner and a 32-channel head coil: (a) a standard SE EPI DWI (matrix size 192 x 192), (b) a high resolution SE EPI DWI (matrix size of 256 x 256) and (c) a FSE DWI BLADE (matrix size 192 x 192). The SNR of the 3 scans was compared in 10 healthy volunteers by a paired student t test. Image quality was evaluated with 4 dedicated questions in a blinded read: (1) The scans were ranked in terms of bulk susceptibility artifact. (2) The scan preference for diagnosis of any diffusion abnormality that might occur and (3) the preference for visualization of the diffusion abnormality actually present was determined. (4) The influence of bulk susceptibility on image evaluation for the diffusion abnormality present was assessed. RESULTS: For visualization of the diffusion abnormality present, BLADE DWI was the scan sequence preferred most by both readers (reader 1: 41.7%, reader 2: 35.7%). For visualization of any diffusion abnormality present, BLADE DWI was the preferred scan in 13 of 14 cases for reader 1 (93%) and in 11 of 14 cases for reader 2 (78.6%). No high resolution SE EPI DWI scan was rated best by reader 1. Reader 2 rated the high resolution SE EPI DWI scan superior in only 1 of 56 judgments. The standard EPI DWI sequence (21.8 +/- 5.3) had in comparison to the high resolution EPI DWI (11.9 +/- 2.6) and the BLADE DWI scans (11.3 +/- 3.8) significantly higher SNR mean values. CONCLUSION: Our preliminary data demonstrates the feasibility of a FSE EPI DWI scan with radial-like k-space sampling, using a 32-channel coil at 3 T in acute brain ischemia. The BLADE DWI was the preferred scan for the detection of acute diffusion abnormalities because of the lack of bulk susceptibility artifacts. SN - 1536-0210 UR - https://www.unboundmedicine.com/medline/citation/19724235/Diffusion_weighted_imaging:_a_comprehensive_evaluation_of_a_fast_spin_echo_DWI_sequence_with_BLADE__PROPELLER__k_space_sampling_at_3_T_using_a_32_channel_head_coil_in_acute_brain_ischemia_ L2 - https://doi.org/10.1097/RLI.0b013e3181af3f0e DB - PRIME DP - Unbound Medicine ER -