Tsuchiya K, Honya K, Yoshida M, Gomyo M, Nitatori T. Cerebral CT angiography using a reduced dose of contrast material at high iodine concentration in combination with a saline flush.
Clin Radiol 2008;
63:1332-5. [PMID:
18996263 DOI:
10.1016/j.crad.2008.07.007]
[Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2008] [Revised: 07/08/2008] [Accepted: 07/15/2008] [Indexed: 02/07/2023]
Abstract
AIM
To determine whether cerebral computed tomography (CT) angiography with a 16-detector row system can be performed using a reduced dose of contrast material.
MATERIALS AND METHODS
Twenty-eight patients were assigned to one of four protocols: A=50 ml of 350 mg I/ml with a saline flush (SF, 40 ml); B=75 ml of 350 mg I/ml with an SF; C=75 ml of 350 mg I/ml without an SF; and D=100ml of 300 mg I/ml without an SF. The attenuation of the internal carotid, middle cerebral, and anterior cerebral arteries were measured. The demonstration of vessels was also assessed.
RESULTS
There were no significant attenuation differences of the arteries among the four groups, neither were any significant differences noted on the visual assessment.
CONCLUSIONS
By using a reduced dose (50 ml) at higher iodine concentration (350 mg I/ml) with an SF, CT angiograms comparable with those acquired with a standard dose and concentration can be obtained.
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