title: CT measurement of splenic volume changes as a result of hypovolemic shock.
abstract: OBJECTIVE
  To evaluate the changes in splenic volume during hypovolemic shock and after recovery by use of multidetector computed tomography (MDCT).
  
  
  METHODS
  We investigated 22 cases who underwent MDCT during hypovolemic shock up to 3 h after presentation, compared the splenic volume with that after recovery, and evaluated the volume difference. We compared the volume ratio (recovery/shock) for two age groups: under 60 years (n = 10) and 60 years and over (n = 12). For cases (n = 10) undergoing CT examination twice after treatment, we compared the volume ratios by using the initial recovery CT and the second CT images.
  
  
  RESULTS
  The average spleen volume in shock was 63 cm(3); under normal conditions it was 132 cm(3) (P < 0.001). The average volume ratio for groups under 60 years old was 2.34; for groups 60 years and over it was 2.05 (P = 0.051). The average volume ratio obtained by use of the initial post-recovery CT was 2.11; the ratio obtained by use of the second post-recovery CT was 2.16 (P = 0.386).
  
  
  CONCLUSIONS
  Our results revealed that splenic volume was reduced during hypovolemic shock and rapidly increased after recovery. Splenic contraction is an important CT finding in shock.
authors.affiliation: Department of Diagnostic Radiology, Niigata City General Hospital, 463-7 Shumoku, Chuo-ku, Niigata, 950-1197, Japan. takakig+jo@gmail.com.
authors.forename: Takao
authors.initials: T
authors.lastname: Kiguchi
authors.affiliation: Department of Diagnostic Radiology, Niigata City General Hospital, 463-7 Shumoku, Chuo-ku, Niigata, 950-1197, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Higuchi
authors.affiliation: Department of Radiological Technology, Graduate School of Health Sciences, Niigata University, Niigata, Japan.
authors.forename: Naoya
authors.initials: N
authors.lastname: Takahashi
authors.affiliation: Department of Diagnostic Radiology, Niigata City General Hospital, 463-7 Shumoku, Chuo-ku, Niigata, 950-1197, Japan.
authors.forename: Toshikazu
authors.initials: T
authors.lastname: Shimokoshi
authors.affiliation: Department of Radiology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
authors.forename: Motohiko
authors.initials: M
authors.lastname: Yamazaki
authors.affiliation: Department of Radiology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
authors.forename: Norihiko
authors.initials: N
authors.lastname: Yoshimura
authors.affiliation: Department of Radiology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
authors.forename: Hidefumi
authors.initials: H
authors.lastname: Aoyama
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D009929:Organ Size; D012769:Shock / Q000000981:diagnostic imaging* / Q000473:pathology*; D013154:Spleen / Q000000981:diagnostic imaging* / Q000473:pathology*; D055815:Young Adult
keywords: Emergencies; Hypovolemic shock; Multidetector computed tomography; Spleen