title: Importance of Tc-99m sulfur colloid liver-spleen scans performed before indium-111 labeled leukocyte imaging for localization of abdominal infection.
abstract: BACKGROUND
  The localization of intraabdominal abscesses is a difficult imaging problem in nuclear medicine, especially when the location of the abscess is in the area of the liver and spleen. The need for performing Tc-99m sulfur colloid liver-spleen scans before injecting indium-111 leukocytes for improved lesion detection and characterization versus performing In-111 leukocyte scans alone has been questioned in the literature
  
  
  METHODS
  We present 3 patients with intraabdominal abscesses in the liver-spleen area, in which liver-spleen scans were performed before In-111 leukocyte scans. The findings of all were correlated with computed tomography and interventional procedures.
  
  
  RESULTS
  In all patients, the Tc-99m liver-spleen scan helped for accurate recognition of the location of the abscess, correlated with computed tomography findings, and were helpful for intervention and exclusion of the other sources of infection.
  
  
  CONCLUSIONS
  Data from these 3 patients reinforces the need for Tc-99m sulfur colloid liver-spleen scans before performing In-111 WBC scans for better localization and interventional treatment of intraabdominal abscesses.
authors.affiliation: Nuclear Medicine Section, St. Vincent's Catholic Medical Centers, NY Medical College, Valhalla, New York 10011, USA.
authors.forename: I M
authors.initials: IM
authors.lastname: Youssef
authors.forename: R
authors.initials: R
authors.lastname: Milardovic
authors.forename: R W
authors.initials: RW
authors.lastname: Perone
authors.forename: S I
authors.initials: SI
authors.lastname: Heiba
authors.forename: H M
authors.initials: HM
authors.lastname: Abdel-Dayem
mesh_terms: D018784:Abdominal Abscess / Q000000981:diagnostic imaging*; D000368:Aged; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007205:Indium Radioisotopes; D007962:Leukocytes / Q000000981:diagnostic imaging*; D008099:Liver / Q000098:blood supply / Q000000981:diagnostic imaging; D008100:Liver Abscess / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals; D013154:Spleen / Q000098:blood supply / Q000000981:diagnostic imaging; D013158:Splenic Diseases / Q000000981:diagnostic imaging*; D013382:Subtraction Technique; D013671:Technetium Tc 99m Sulfur Colloid
chemical_list: D007205:Indium Radioisotopes; D019275:Radiopharmaceuticals; D013671:Technetium Tc 99m Sulfur Colloid