Radiology
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Foley, W. D.
Right arrow Articles by Perret, R. S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Foley, W. D.
Right arrow Articles by Perret, R. S.

Radiology, Vol 192, 367-371, Copyright © 1994 by Radiological Society of North America

ARTICLES

Hepatic helical CT: contrast material injection protocol

WD Foley, RG Hoffmann, FA Quiroz, CE Kahn Jr and RS Perret
Department of Radiology, Medical College of Wisconsin, Milwaukee 53226.

PURPOSE: To develop and compare contrast material injection protocols suitable for hepatic helical computed tomography (CT). MATERIALS AND METHODS: Monophasic and biphasic helical CT were performed with contrast material with an iodine load of 50 g at 3 mL/sec for 60 seconds or at 5 mL/sec for 10 seconds and 2 mL/sec for 65 seconds, respectively. In 58 men and 51 women, aged 22-77 years, aortic and hepatic enhancement curves were constructed from a cluster acquisition with a slip-ring scanner operating in a nonhelical mode. RESULTS: The monophasic protocol produced a higher peak aortic enhancement (180 HU +/- 47 [+/- 1 standard deviation]) than the biphasic protocol (150 HU +/- 24). Peak hepatic enhancement (63-64 HU +/- 15) was equivalent. Calculated equilibrium time for the monophasic protocol was 95.1 seconds and for the biphasic protocol was 101.4 seconds. The contrast enhancement index differed only marginally between the two protocols (P < .4). CONCLUSION: Monophasic and biphasic protocols produced equivalent results when tailored for the shorter temporal window of a rapid-sequence helical acquisition.


This article has been cited by other articles:


Home page
 RadiologyHome page
H. Kondo, M. Kanematsu, S. Goshima, Y. Tomita, T. Miyoshi, A. Hatcho, N. Moriyama, M. Onozuka, Y. Shiratori, and K. T. Bae
Abdominal Multidetector CT in Patients with Varying Body Fat Percentages: Estimation of Optimal Contrast Material Dose
Radiology, December 1, 2008; 249(3): 872 - 877.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Roentgenol.Home page
S. Goshima, M. Kanematsu, H. Kondo, R. Yokoyama, T. Miyoshi, H. Nishibori, H. Kato, H. Hoshi, M. Onozuka, and N. Moriyama
MDCT of the liver and hypervascular hepatocellular carcinomas: optimizing scan delays for bolus-tracking techniques of hepatic arterial and portal venous phases.
Am. J. Roentgenol., July 1, 2006; 187(1): W25 - W32.
[Abstract] [Full Text] [PDF]

Home page
 RadiologyHome page
K. Awai, M. Inoue, Y. Yagyu, M. Watanabe, T. Sano, S. Nin, R. Koike, Y. Nishimura, and Y. Yamashita
Moderate versus High Concentration of Contrast Material for Aortic and Hepatic Enhancement and Tumor-to-Liver Contrast at Multi-Detector Row CT
Radiology, December 1, 2004; 233(3): 682 - 688.
[Abstract] [Full Text] [PDF]

Home page
 RadiologyHome page
K. Awai, K. Hiraishi, and S. Hori
Effect of Contrast Material Injection Duration and Rate on Aortic Peak Time and Peak Enhancement at Dynamic CT Involving Injection Protocol with Dose Tailored to Patient Weight
Radiology, January 1, 2004; 230(1): 142 - 150.
[Abstract] [Full Text] [PDF]

Home page
 RadiologyHome page
M. Kanematsu, R. C. Semelka, M. Matsuo, H. Kondo, M. Enya, S. Goshima, N. Moriyama, and H. Hoshi
Gadolinium-enhanced MR Imaging of the Liver: Optimizing Imaging Delay for Hepatic Arterial and Portal Venous Phases—A Prospective Randomized Study in Patients with Chronic Liver Damage
Radiology, November 1, 2002; 225(2): 407 - 415.
[Abstract] [Full Text] [PDF]

Home page
 RadiologyHome page
K. Awai, K. Takada, H. Onishi, and S. Hori
Aortic and Hepatic Enhancement and Tumor-to-Liver Contrast: Analysis of the Effect of Different Concentrations of Contrast Material at Multi-Detector Row Helical CT
Radiology, September 1, 2002; 224(3): 757 - 763.
[Abstract] [Full Text] [PDF]

Home page
 RadioGraphicsHome page
W. D. Foley
Special Focus Session: Multidetector CT: Abdominal Visceral Imaging
RadioGraphics, May 1, 2002; 22(3): 701 - 719.
[Abstract] [Full Text] [PDF]

Home page
 RadiologyHome page
Y. Yamashita, Y. Komohara, M. Takahashi, M. Uchida, N. Hayabuchi, T. Shimizu, and I. Narabayashi
Abdominal Helical CT: Evaluation of Optimal Doses of Intravenous Contrast Material-A Prospective Randomized Study
Radiology, September 1, 2000; 216(3): 718 - 723.
[Abstract] [Full Text]

Home page
 RadiologyHome page
E. L. Hänninen, T. J. Vogl, R. Felfe, W. Pegios, J. Balzer, W. Clauss, and R. Felix
Detection of Focal Liver Lesions at Biphasic Spiral CT: Randomized Double-Blind Study of the Effect of Iodine Concentration in Contrast Materials
Radiology, August 1, 2000; 216(2): 403 - 409.
[Abstract] [Full Text]

Home page
 RadiologyHome page
T. Kim, T. Murakami, S. Takahashi, A. Okada, M. Hori, Y. Narumi, and H. Nakamura
Pancreatic CT Imaging: Effects of Different Injection Rates and Doses of Contrast Material
Radiology, July 1, 1999; 212(1): 219 - 225.
[Abstract] [Full Text]

Home page
 RadiologyHome page
D. S. Gierada and K. T. Bae
Gadolinium as a CT Contrast Agent: Assessment in a Porcine Model
Radiology, March 1, 1999; 210(3): 829 - 834.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
RADIOLOGY RADIOGRAPHICS RSNA JOURNALS ONLINE
Copyright © 1994 by the Radiological Society of North America.