title: [Optimal protocol of MR contrast imaging in diabetic foot].
abstract: OBJECTIVE
  To identify the optimal protocol of MR contrast imaging in diabetic foot.
  
  
  METHODS
  20 patients with diabetic feet were enrolled and examined with 3D FLASH-MRA, 3D VIBE-WE, 2D SE-FS, 2D TSE-FS and 2D FLASH-FS at a 1.5T MR scanner for vascular changes in feet. Their effectiveness in displaying blood vessels, venous aliasing and articular cartilage, as well as the signal-to-noise ratio (SNR) and contrast ratio (CR) of plantar skins calcaneus, flexor digitorum brevis, dorsal artery, and talocalcaneal joint cartilage in diabetic feet were compared.
  
  
  RESULTS
  (1) 3D FLASH-MRA was better in displaying blood vessels and venous aliasing than the others (P < 0.05); (2) 3D VIBE-WE was better in displaying articular cartilage than 2D SE-FS, 2D TSE-FS and 2D FLASH-FS (P < 0.05); (3) 3D VIBE-WE had higher SNR and CR of plantar skins, dorsal artery, talocalcaneal joint cartilage, calcaneus, and flexor digitorum brevis than the others (P < 0.05).
  
  
  CONCLUSIONS
  3D VIBE-WE is the preferred sequence for T1 weighted imaging with contrast in diabetic feet. It can also serve as the supplemental sequence of 3D FLASH-MRA in MR angiography.
authors.affiliation: Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China.
authors.forename: Chang-Xian
authors.initials: CX
authors.lastname: Li
authors.forename: He-Han
authors.initials: HH
authors.lastname: Tang
authors.forename: Hui-Li
authors.initials: HL
authors.lastname: Guo
authors.forename: Da-Wei
authors.initials: DW
authors.lastname: Chen
authors.forename: Xing-Wu
authors.initials: XW
authors.lastname: Ran
mesh_terms: D000368:Aged; D003287:Contrast Media; D017719:Diabetic Foot / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged
chemical_list: D003287:Contrast Media