Usefulness of a saline chaser to reduce contrast material dose in abdominal CT of normal dogs
Journal of Veterinary Science
; : e38-2019.
Article
in En
| WPRIM
| ID: wpr-758927
Responsible library:
WPRO
ABSTRACT
Use of a saline chaser has been reported to allow reduction of contrast dose and artifacts during computed tomography (CT) examination in humans. This study assesses the extent of contrast dose by using a saline chaser in abdominal CT scans of normal dogs. Five beagles underwent abdominal CT scans. Three protocols were applied: 600 mg I/kg iohexol without saline chaser (protocol 1), 30% lower dose of iohexol (420 mg I/kg) followed by a 10 mL saline chaser (protocol 2), and 40% lower dose of iohexol (360 mg I/kg) followed by a 10 mL saline chaser (protocol 3). Attenuation values were obtained from aorta, portal vein, and liver parenchyma. The maximum enhancement values (MEVs) in protocol 2 were significantly higher than those in protocols 1 and 3 in the aorta; no difference was seen in the portal vein in all protocols. The liver parenchymal MEVs in protocols 1 and 2 were significantly higher than those obtained in protocol 3. In this study, the use of a saline chaser and a reduced dose of contrast material did not affect vessel enhancement. In conclusion, use of a saline chaser for abdominal CT of dogs is recommended because it allows a 30% reduction of contrast dose without decreasing vascular and hepatic parenchymal enhancement.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Aorta
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Portal Vein
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Iohexol
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Tomography, X-Ray Computed
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Artifacts
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Abdomen
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Liver
Limits:
Animals
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Humans
Language:
En
Journal:
Journal of Veterinary Science
Year:
2019
Type:
Article