Contrast-Enhanced Computed Tomography in Carcinoma of the Urinary Bladder

1987 ◽  
Vol 28 (1) ◽  
pp. 67-70 ◽  
Author(s):  
E. M. Sager ◽  
S. D. Fosså ◽  
O. Kaalhus ◽  
K. Talle
Keyword(s):  
Computed Tomography ◽  
Urinary Bladder ◽  
Contrast Medium ◽  
Contrast Enhancement ◽  
Bladder Wall ◽  
Contrast Material ◽  
Intravenous Contrast ◽  
Intravenous Contrast Medium ◽  
The Difference ◽  
Enhanced Computed Tomography

Computed tomography (CT) scans of the urinary bladder were taken before and in combination with intravenous contrast medium injection in 30 patients with invasive bladder carcinoma. Three different ways of injecting the same amount of intravenous contrast material were used in three groups, each consisting of ten patients. In the first group the contrast medium was given during 90 seconds, in the second group during 40 seconds and in the third one, the first half during 20 seconds and the second half during 90 seconds. The attenuation in the tumors and in the bladder wall was measured in Hounsfield units. Independent of injection method, all tumors showed significantly higher contrast enhancement than the bladder wall when the injection was terminated. The difference in contrast enhancement was greatest in the group where the shortest injection time was used and greatest immediately after the conclusion of the injection. The difference in contrast enhancement between tumor and bladder wall was visible on the monitor in all cases.

Contrast-Enhanced Computed Tomography to Show Perivesical Extension in Bladder Carcinoma

1987 ◽  
Vol 28 (3) ◽  
pp. 307-311 ◽  
Author(s):  
E. M. Sager ◽  
K. Talle ◽  
S. D. Fosså ◽  
S. Ous ◽  
A. E. Stenwig
Keyword(s):  
Computed Tomography ◽  
Contrast Medium ◽  
Intravenous Contrast ◽  
Intravenous Contrast Medium ◽  
Contrast Enhanced ◽  
Before And After ◽  
Muscle Invasive ◽  
Enhanced Computed Tomography ◽  
Improved Accuracy ◽  
Contrast Enhanced Computed Tomography

Fifty-two patients (53 lesions) with muscle invasive carcinoma (T2/T3) of the urinary bladder were examined with computed tomography (CT) before planned total cystectomy. The object of CT was to demonstrate perivesical growth. All patients were examined before and after intravenous injection of contrast medium. The stages obtained from the precontrast and postcontrast scans were compared with the histopathologic stage from the cystectomy specimen. CT staged correctly 35 of the 53 lesions in the precontrast series and 46 of the 53 lesions in the postcontrast series. The improved accuracy from contrast enhancement resulted primarily from fewer cases being overstaged. The use of intravenous contrast medium improved accuracy of CT in evaluation of perivescial tumor growth.

scholarly journals Contrast-enhanced computed tomography of the liver, gall bladder and urogenital tract in female red-eared terrapins (Trachemys scripta elegans)

2017 ◽  
Vol 62 (No. 12) ◽  
pp. 674-680 ◽  
Author(s):  
V. Sochorcova ◽  
P. Proks ◽  
E. Cermakova ◽  
Z. Knotek
Keyword(s):  
Computed Tomography ◽  
Gall Bladder ◽  
Contrast Medium ◽  
Bladder Wall ◽  
Post Contrast ◽  
Contrast Medium Administration ◽  
Contrast Enhanced ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography ◽  
Contrast Studies

The aim of the present study was to evaluate the feasibility of contrast-enhanced computed tomography for organ morphology and perfusion in five captive terrapins. Native scans were performed and afterwards an iodinated non-ionic contrast media was manually administered through the jugular vein catheter. Post-contrast CT scans were taken 20 (T<sub>20</sub>), 60 (T<sub>60</sub>) and 180 (T<sub>180</sub>) seconds after the contrast medium administration. Maximum contrast enhancement of the kidneys and the liver was detected at T<sub>20</sub> and T<sub>60</sub>, respectively. The gall bladder content, the urinary bladder content and ovarian follicles were all without contrast enhancement in all five terrapins. Gall bladder wall thickness was 0.9 mm in all terrapins. Enhancement of the gall bladder wall in post-contrast studies was considered excellent, good or poor in two terrapins, two terrapins and one terrapin, respectively, with a mean score of 1.8 ± 0.84 over all contrast studies. Enhancement of the ureters in post-contrast studies was considered excellent in all terrapins in all contrast studies. Peak aortic enhancement was reached 20 seconds after contrast medium administration with the peak enhancement of 213.5 ± 41 HU in four terrapins and 560 HU in one terrapin. Peak hepatic vein enhancement after contrast medium administration was recorded 20 and 60 seconds in two and three terrapins, respectively. In conclusion, contrast-enhanced computed tomography proved to be a valuable method for clinical examination of the liver, gall bladder, kidneys, ureters, urinary bladder and ovarian follicles in red-eared terrapins.

Computed Tomography (Ct) of the Liver of the Dog by a Six-generation CT Scanner and Intravenous Contrast Medium

2005 ◽  
Vol 34 (s1) ◽  
pp. 51-52
Author(s):  
M. A. Teixeira ◽  
G. Ramirez-Zarzosa ◽  
A. Arencibia ◽  
L. Cardoso ◽  
M. D. Ayala ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Contrast Medium ◽  
Ct Scanner ◽  
Intravenous Contrast ◽  
Intravenous Contrast Medium

Dislodgement of a Power-Injectable Peripherally Inserted Central Catheter After Power Injection: A Case Report

2013 ◽  
Vol 18 (1) ◽  
pp. 27-29 ◽  
Author(s):  
Boon Keat Lim ◽  
Babu Suresh Balasubramaniam
Keyword(s):  
Computed Tomography ◽  
Original Position ◽  
Peripherally Inserted Central Catheter ◽  
Central Catheter ◽  
Intravenous Contrast ◽  
Intravenous Contrast Medium ◽  
Power Injection ◽  
Scout View ◽  
The Right ◽  
Enhanced Computed Tomography

A 63-year-old Malay woman had a 6-French dual-lumen power-injectable peripherally inserted central catheter (PICC) inserted and subsequently underwent a contrast-enhanced computed tomography scan with intravenous contrast medium administered via the PICC. After the scan, the tip of the PICC was noted to have displaced from its original position and lodged in 1 of the small branches of the right subclavian vein. This phenomenon was then demonstrated in real time under fluoroscopy during the process of repositioning the PICC tip. Although power-injectable PICCs are designed for use with power injectors, tip displacement can and does happen. A computed tomography scout view of the chest may be necessary after each use of power injectors to confirm that the PICC tip remains in a satisfactory position.

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