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Hepatic contrast medium enhancement at computed tomography and its correlation with various body size measures

Svensson, Anders; Nouhad, Jallo; Cederlund, Kerstin; Aspelin, Peter; Nyman, Ulf LU ; Björk, Jonas and Torkel, Brismar B. (2012) In Acta Radiologica 53(6). p.601-606
Abstract
Background: When the same dose of iodine is given to all patients when performing abdominal computed tomography (CT) there may be a wide inter-individual variation in contrast medium (CM) enhancement of the liver. Purpose: To evaluate if any of the measures body height (BH), body mass index (BMI), lean body mass (LBM), ideal body weight (IBW), and body surface area (BSA) correlated better than body weight (BW) with hepatic enhancement, and to compare the enhancement when using iodixanol and iomeprol. Material and Methods: One hundred patients referred for standard three-phase CT examination of abdomen were enrolled. Body weight and height were measured at the time of the CT examination. Forty grams of iodine (iodixanol 320 mg l/mL or... (More)
Background: When the same dose of iodine is given to all patients when performing abdominal computed tomography (CT) there may be a wide inter-individual variation in contrast medium (CM) enhancement of the liver. Purpose: To evaluate if any of the measures body height (BH), body mass index (BMI), lean body mass (LBM), ideal body weight (IBW), and body surface area (BSA) correlated better than body weight (BW) with hepatic enhancement, and to compare the enhancement when using iodixanol and iomeprol. Material and Methods: One hundred patients referred for standard three-phase CT examination of abdomen were enrolled. Body weight and height were measured at the time of the CT examination. Forty grams of iodine (iodixanol 320 mg l/mL or iomeprol 400 mg l/mL) was injected at a rate of 1.6 g-l/s, followed by a 50 mL saline flush. The late arterial phase was determined by using a semi-automatic smart prep technique with a scan delay of 20 s. The hepatic parenchymal phase started automatically 25 s after the late arterial phase. CM concentration was estimated by placement of regions of interest in aorta (native and late arterial phase) and in liver (native and parenchymal phase). Results: BW (r = -0.51 and -0.64), LBM (r = -0.54 and -0.59), and BSA (r = -0.54 and -0.65) showed the best correlation coefficients with aortic and hepatic parenchymal enhancement, respectively, without any significant differences between the measures. Comparing iodixanol and iomeprol there was no significant difference in aortic enhancement. The liver enhancement was significantly higher (P < 0.05) using iodixanol than iomeprol. Conclusion: To achieve a consistent hepatic enhancement, CM dose may simply be adjusted to body weight instead of using more complicated calculated parameters based on both weight and height. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Computed tomography, contrast media, injection protocol
in
Acta Radiologica
volume
53
issue
6
pages
601 - 606
publisher
John Wiley & Sons
external identifiers
  • wos:000306984000004
  • scopus:84864038188
ISSN
1600-0455
DOI
10.1258/ar.2012.120268
language
English
LU publication?
yes
id
643c2b98-3b08-4a0a-8e67-1d5873e94ddb (old id 3069982)
date added to LUP
2012-10-05 07:03:50
date last changed
2017-10-29 04:04:54
@article{643c2b98-3b08-4a0a-8e67-1d5873e94ddb,
  abstract     = {Background: When the same dose of iodine is given to all patients when performing abdominal computed tomography (CT) there may be a wide inter-individual variation in contrast medium (CM) enhancement of the liver. Purpose: To evaluate if any of the measures body height (BH), body mass index (BMI), lean body mass (LBM), ideal body weight (IBW), and body surface area (BSA) correlated better than body weight (BW) with hepatic enhancement, and to compare the enhancement when using iodixanol and iomeprol. Material and Methods: One hundred patients referred for standard three-phase CT examination of abdomen were enrolled. Body weight and height were measured at the time of the CT examination. Forty grams of iodine (iodixanol 320 mg l/mL or iomeprol 400 mg l/mL) was injected at a rate of 1.6 g-l/s, followed by a 50 mL saline flush. The late arterial phase was determined by using a semi-automatic smart prep technique with a scan delay of 20 s. The hepatic parenchymal phase started automatically 25 s after the late arterial phase. CM concentration was estimated by placement of regions of interest in aorta (native and late arterial phase) and in liver (native and parenchymal phase). Results: BW (r = -0.51 and -0.64), LBM (r = -0.54 and -0.59), and BSA (r = -0.54 and -0.65) showed the best correlation coefficients with aortic and hepatic parenchymal enhancement, respectively, without any significant differences between the measures. Comparing iodixanol and iomeprol there was no significant difference in aortic enhancement. The liver enhancement was significantly higher (P &lt; 0.05) using iodixanol than iomeprol. Conclusion: To achieve a consistent hepatic enhancement, CM dose may simply be adjusted to body weight instead of using more complicated calculated parameters based on both weight and height.},
  author       = {Svensson, Anders and Nouhad, Jallo and Cederlund, Kerstin and Aspelin, Peter and Nyman, Ulf and Björk, Jonas and Torkel, Brismar B.},
  issn         = {1600-0455},
  keyword      = {Computed tomography,contrast media,injection protocol},
  language     = {eng},
  number       = {6},
  pages        = {601--606},
  publisher    = {John Wiley & Sons},
  series       = {Acta Radiologica},
  title        = {Hepatic contrast medium enhancement at computed tomography and its correlation with various body size measures},
  url          = {http://dx.doi.org/10.1258/ar.2012.120268},
  volume       = {53},
  year         = {2012},
}