title: Usefulness of 3-dimensional reconstructed images of renal arteries using rotational digital subtraction angiography.
abstract: OBJECTIVE
  We assess the feasibility of a 3-dimensional (D) reconstruction technique of rotational digital subtraction angiography (DSA) for visualization of the renal arteries.
  
  
  METHODS
  We evaluated 28 kidneys in 20 patients. Rotational DSA images were obtained during a deep inspiratory pause after contrast material injection through the renal artery. Acquired data were transferred to an image workstation and reconstructed as 3-D images. Visibility of the main trunk of the renal artery, segmental arteries, interlobar arteries and arcuate arteries was classified as grade 4-excellent, grade 3-good, grade 2-satisfactory and grade 1-poor. The 3-D reconstructed images were compared with conventional 2-D DSA performed just before the rotational DSA. The criteria for evaluation were visibility of the aneurysm neck in 8 cases of aneurysm, delineation of the feeding arteries in 6 cases of renal lesions and visibility of the relationship between renal branches in other cases.
  
  
  RESULTS
  Delineation of grades 4 to 1 was 93%, 7%, 0% and 0% for the main renal artery, 66%, 21%, 7% and 6% for segmental arteries, 61%, 11%, 21% and 7% for interlobar arteries, and 36%, 18%, 36% and 10% for arcuate arteries, respectively. The 3-D images had the advantage over 2-D DSA in 75% of cases. In all cases of aneurysm 3-D images were obviously more useful than 2-D DSA.
  
  
  CONCLUSIONS
  3-D images of renal arteries obtained with rotational DSA are considered acceptable for clinical use.
authors.affiliation: Department of Radiology, Hokkaido University School of Medicine, Kita-Ku, Sapporo, Japan.
authors.forename: Hideho
authors.initials: H
authors.lastname: Endo
authors.forename: Tadashi
authors.initials: T
authors.lastname: Shimizu
authors.forename: Yoshihisa
authors.initials: Y
authors.lastname: Kodama
authors.forename: Kazuo
authors.initials: K
authors.lastname: Miyasaka
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000783:Aneurysm / Q000000981:diagnostic imaging; D015901:Angiography, Digital Subtraction; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D006978:Hypertension, Renovascular / Q000000981:diagnostic imaging; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D007680:Kidney Neoplasms / Q000098:blood supply / Q000000981:diagnostic imaging; D016030:Kidney Transplantation / Q000502:physiology; D008297:Male; D008875:Middle Aged; D012077:Renal Artery / Q000000981:diagnostic imaging*; D012078:Renal Artery Obstruction / Q000000981:diagnostic imaging; D012680:Sensitivity and Specificity