title: Comparative study of image quality between axial T2-weighted BLADE and turbo spin-echo MRI of the upper abdomen on 3.0 T.
abstract: OBJECTIVE
  To compare image quality of turbo spin-echo (TSE) with BLADE [which is also named periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER)] on magnetic resonance imaging (MRI) for upper abdomen.
  
  
  METHODS
  This study involved the retrospective evaluation of 103 patients (63 males, 40 females; age range 19-76 years; median age 53.8 years) who underwent 3.0 T MRI with both conventional TSE T2-weighted imaging (T2WI) and BLADE TSE T2WI. Two radiologists assessed respiratory motion, gastrointestinal peristalsis, and vascular pulsation artifacts, as well as the sharpness of the liver and pancreas edges. Scores for all magnetic resonance (MR) images were recorded. Wilcoxon's rank test was used to compare hierarchical data. Cohen's kappa coefficient was adopted to analyze interobserver consistency.
  
  
  RESULTS
  Compared to TSE T2WI, BLADE TSE T2WI reduced all of the examined motion artifacts and increased the sharpness of the liver and pancreas edges (all P < 0.05). Medium to good interobserver consistency was obtained for evaluating these indicators. The scanning time of BLADE TSE T2WI was 4-16 s shorter than that of conventional TSE T2WI.
  
  
  CONCLUSIONS
  Compared to TSE sequence, the BLADE technique can reduce the respiratory motion, gastrointestinal peristalsis, and vascular pulsation artifacts, while decreasing the scanning time and improving the anatomic detail and image quality.
authors.affiliation: Shandong Medical Imaging Research Institute, Shandong University, No. 324, Jingwu Road, Jinan, 250021, Shandong, China.|Department of Radiology, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2 Road, Binzhou, 256603, Shandong, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Department of Pediatrics, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2 Road, Binzhou, 256603, Shandong, China.
authors.forename: ChunMei
authors.initials: C
authors.lastname: Tian
authors.affiliation: Department of Radiology, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2 Road, Binzhou, 256603, Shandong, China.
authors.forename: PeiYuan
authors.initials: P
authors.lastname: Wang
authors.affiliation: Department of Radiology, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2 Road, Binzhou, 256603, Shandong, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Chen
authors.affiliation: Department of Radiology, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2 Road, Binzhou, 256603, Shandong, China.
authors.forename: XiJin
authors.initials: X
authors.lastname: Mao
authors.affiliation: Department of Radiology, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2 Road, Binzhou, 256603, Shandong, China.
authors.forename: ShanShan
authors.initials: S
authors.lastname: Wang
authors.affiliation: Department of Radiology, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2 Road, Binzhou, 256603, Shandong, China.
authors.forename: Xu
authors.initials: X
authors.lastname: Wang
authors.affiliation: Department of Radiology, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2 Road, Binzhou, 256603, Shandong, China.
authors.forename: JingMin
authors.initials: J
authors.lastname: Dong
authors.affiliation: Binzhou Medical University, No. 346, Guanhai Road, Yantai, 264003, Shandong, China. binwang001@aliyun.com.
authors.forename: Bin
authors.initials: B
authors.lastname: Wang
mesh_terms: D000005:Abdomen / Q000473:pathology*; D000328:Adult; D000368:Aged; D016477:Artifacts; D005260:Female; D006801:Humans; D007089:Image Enhancement; D007090:Image Interpretation, Computer-Assisted; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D012189:Retrospective Studies; D055815:Young Adult
keywords: BLADE; Image artifact; MRI; PROPELLER