| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Original Research |
1 Diagnostic Imaging Center, Saiseikai Kumamoto Hospital, 5-3-1 Chikami,
Kumamoto-shi, Kumamoto 861-4193, Japan.
2 Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto
University, Kumamoto 860-0811, Japan.
3 Diagnostic Image Analysis, Graduate School of Medical Sciences, Kumamoto
University, Kumamoto 860-0811, Japan.
4 CT Systems Division, Toshiba Medical Systems, Tokyo 113-8456, Japan.
OBJECTIVE. The objective of our study was to evaluate whether a low-dose contrast material (CM) protocol with a saline flush might provide sufficient contrast enhancement in aortoiliac 16-MDCT angiography.
SUBJECTS AND METHODS. Forty-five patients were divided into two groups on the basis of the CM (300 mg I/mL) administration protocol: group 1 (23 patients) received 100 mL of CM at 3.0 mL/sec; and group 2 (22 patients), 50 mL of CM at 3.0 mL/sec followed by a 20-mL saline flush at 3.0 mL/sec. All patients underwent 16-MDCT angiography of the entire aortoiliac region. Seven regions of interest (ROIs) were drawn from the ascending aorta (ROI 1) to the external iliac artery (ROI 7). Quantitative analysis was performed by calculating the mean aortoiliac attenuation and the mean difference between the maximum and minimum attenuation values. Vascular enhancement of the renal arteries was visually assessed using 2D and 3D postprocessing techniques.
RESULTS. The mean aortoiliac attenuation in group 1 was 314.3 ± 45.9 H and that in group 2 was 306.1 ± 35.0 H. The difference was not statistically significant. Adequate mean aortoiliac attenuation was achieved in 95.7% (22/23) and 95.5% (21/22) of patients in groups 1 and 2, respectively. The difference was not statistically significant. The mean difference between the maximum and minimum attenuation values was significantly smaller in group 1 (41.3 ± 16.8 H) than in group 2 (57.2 ± 25.3 H). The renal arteries were assessable in all patients in both groups.
CONCLUSION. This protocol of 50 mL of CM with a saline flush provides attenuation comparable to that obtained with the 100 mL of CM in aortoiliac 16-MDCT angiography.
Keywords: aneurysm • aorta • aortography • contrast media • MDCT angiography
CiteULike 
Complore 
Connotea 
Del.icio.us 
Digg 
Reddit 
Technorati What's this?
This article has been cited by other articles:
|
|
 |
|
  C. A. Coursey, R. C. Nelson, P. W. Weber, L. E. Howle, E. B. Nichols, D. Marin, and D. DeLong Contrast Material Administration Protocols for 64-MDCT Angiography: Altering Volume and Rate and Use of a Saline Chaser to Better Match the Imaging Window--Physiologic Phantom Study Am. J. Roentgenol., December 1, 2009; 193(6): 1568 - 1575. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Y. Yanaga, K. Awai, T. Nakaura, S. Oda, Y. Funama, K. T. Bae, and Y. Yamashita Effect of Contrast Injection Protocols with Dose Adjusted to the Estimated Lean Patient Body Weight on Aortic Enhancement at CT Angiography Am. J. Roentgenol., April 1, 2009; 192(4): 1071 - 1078. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. T. Bae, A. J. Shah, S. S. Shang, J. H. Wang, S. Chang, M. Kanematsu, and C. F. Hildebolt Aortic and Hepatic Contrast Enhancement with Abdominal 64-MDCT in Pediatric Patients: Effect of Body Weight and Iodine Dose Am. J. Roentgenol., November 1, 2008; 191(5): 1589 - 1594. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 C.-Y. Yang, Y.-F. Chen, C.-W. Lee, A. Huang, Y. Shen, C. Wei, and H.-M. Liu Multiphase CT Angiography versus Single-Phase CT Angiography: Comparison of Image Quality and Radiation Dose AJNR Am. J. Neuroradiol., August 1, 2008; 29(7): 1288 - 1295. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Y. Nakayama, K. Awai, Y. Funama, D. Liu, T. Nakaura, Y. Tamura, and Y. Yamashita Lower tube voltage reduces contrast material and radiation doses on 16-MDCT aortography. Am. J. Roentgenol., November 1, 2006; 187(5): W490 - W497. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
