Document Detail

Nanoscaled iodized oil emulsion as a CT contrast agent for the detection of experimental liver tumors in a rat model.
MedLine Citation:
PMID:  20617548     Owner:  NLM     Status:  MEDLINE    
RATIONALE AND OBJECTIVES: To characterize an iodized oil emulsion for computed tomography (CT) imaging of experimental hepatic tumors in rat models. MATERIALS AND METHODS: For characterizing the agents in normal rats, three rats were intravenously infused and imaged with clinical CT up to 1 week. Iopamidol solution was also used as controls (n = 3). For evaluating the feasibility of diagnosis of hepatic tumors, 12 rats were injected with C6 glial tumor cells into the liver 11, 9, 7, and 5 days before CT (n = 3 per day). After CT imaging, gross and histopathologic correlation of liver tumors with CT images were performed. RESULTS: CT numbers of aorta and inferior vena cava (IVC) increased immediately after injection of the emulsion and remained above 200 Hounsfield units for 1 hour (maximum: 295.67 +/- 27.65 in aorta and 347.07 +/- 10.58 in IVC). The mean attenuation in liver and spleen was relatively stable between 30 and 180 minutes (maximum: 188.84 +/- 18.70 in liver and 210.97 +/- 15.83 in spleen). All 20 tumors later confirmed by pathology were detected as hypodense lesions on CT (sensitivity: 100%; range, 2.0-16.4 mm). The mean enhancement ratios of liver at all time points were significantly higher than those of tumors (P < .05). CONCLUSION: The hepatic enhancement achieved by the iodized oil emulsion is reticuloendothelial system-specific with the property of blood pool enhancement and longer lasting than that achievable with the current water soluble agents. Thus, this agent may offer significant advantages for diagnosis of hepatic metastases.
Soo-Jeong Lim; Joon Seok Lim; Junjeong Choi; Jin-Young Choi; Woo Jin Hyung; Hong Sik Kim; Jinsuk Suh; Ki Whang Kim
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Academic radiology     Volume:  17     ISSN:  1878-4046     ISO Abbreviation:  Acad Radiol     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-07-08     Completed Date:  2010-08-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9440159     Medline TA:  Acad Radiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  985-91     Citation Subset:  IM    
Department of Bioscience and Bioengineering, Sejong University, Seoul, Republic of Korea.
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MeSH Terms
Contrast Media / diagnostic use*
Iodized Oil / diagnostic use*
Liver / radiography
Liver Neoplasms, Experimental / pathology,  radiography*
Rats, Sprague-Dawley
Spleen / radiography
Tomography, X-Ray Computed*
Vena Cava, Inferior / radiography
Reg. No./Substance:
0/Contrast Media; 8001-40-9/Iodized Oil

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