Reduced contrast medium in abdominal aorta CTA using a multiphasic injection technique

Nijhof, W.H.; Vos, Charlotte S. van der; Anninga, Bauke; Stegehuis, Paulien L.; Jager, Gerrit J.; Rutten, M.J.C.M.

doi:10.1016/j.ejrad.2012.09.022

Cited by 10 publications

(16 citation statements)

References 8 publications

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“…Therefore, abdominal CTA has important clinical value for the accurate evaluation of lesions, surgical planning and postoperative observation, and it is widely applied in clinical practice. On the other hand, the increased popularity of CT has also generated increasing concern regarding the potential risks to patients of radiation dose and contrast dose, and many studies have addressed how to optimise CTA scan protocols to reduce radiation dose and iodine content of the contrast medium . Other studies have shown that patients with central obesity and high BMI often suffer from metabolic disorders and that their risks of hypertension, hyperlipaemia, diabetes mellitus, cardiovascular disease and tumours are increased .…”

Section: Discussionmentioning

confidence: 99%

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Feasibility of spectral imaging with low-concentration contrast medium in abdominal CT angiography of obese patients

Liu

Лю

et al. 2016

Int J Clin Pract

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Section: Discussionmentioning

confidence: 99%

“…CTA scan protocols to reduce radiation dose and iodine content of the contrast medium [4][5][6]. Other studies have shown that patients with central obesity and high BMI often suffer from metabolic disorders and that their risks of hypertension, hyperlipaemia, diabetes mellitus, cardiovascular disease and tumours are increased 7.…”

mentioning

confidence: 99%

Feasibility of spectral imaging with low-concentration contrast medium in abdominal CT angiography of obese patients

Liu

Лю

et al. 2016

Int J Clin Pract

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“…How each of these parameters affects contrast enhancement has been reported in several older and recent studies (67,68).…”

Section: Techniques For Reduction Of Contrast Media Dosementioning

confidence: 93%

“…Although the iodine dose for abdominal CT angiographic examination is not fixed, most studies have reported using 32-45 g of iodine to attain the targeted intravascular attenuation of >200 HU (28,68). Typically, intravascular enhancement of >200 HU enables more consistent and reliable visualization of large and small arterial branches in the abdomen, and the quality of 2D and 3D images is also aesthetically pleasing (71).…”

Section: Techniques For Reduction Of Contrast Media Dosementioning

confidence: 97%

New and Evolving Concepts in CT for Abdominal Vascular Imaging

et al. 2014

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Computed tomographic (CT) angiography has become the standard of care, supplanting invasive angiography for comprehensive initial evaluation of acute and chronic conditions affecting the vascular system in the abdomen and elsewhere. Over the past decade, the capabilities of CT have improved substantially; simultaneously, the expectations of the referring physician and vascular surgeons have also evolved. Increasingly, CT angiography is used as an imaging biomarker for treatment selection and assessment of effectiveness. However, the growing use of CT angiography has also introduced some challenges, as potential radiation-associated and contrast media-induced risks need to be addressed. These concerns can be partly confronted by modifying scanning parameters (applying a low tube voltage) with or without using software-based solutions. Most recently, multienergy technology has endowed CT with new capabilities offering improved CT angiographic image quality and novel plaque characterization while decreasing radiation and iodine dose. In this article, we discuss current and new approaches using both conventional and multienergy CT for studying vascular disease in the abdomen. We propose various approaches to overcoming commonly encountered image quality challenges in CT angiography. In addition, we describe supplemental strategies for improving patient safety that leverage the available technology.

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“…In recent years, CM volume reduction has consistently been in the center of research [14] , [15] , [16] , [17] , [18] , with the goal to use CM more efficiently. Apart from faster scanning techniques, new scanner- and especially the latest detector technologies with use of lower kV protocols facilitate lower CM volume.…”

Section: Introductionmentioning

confidence: 99%

Feasibility of low contrast media volume in CT angiography of the aorta

Seehofnerová

Kok

Mihl

et al. 2015

European Journal of Radiology Open

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ObjectivesUsing smaller volumes of contrast media (CM) in CT angiography (CTA) is desirable in terms of cost reduction and prevention of contrast-induced nephropathy (CIN). The purpose was to evaluate the feasibility of low CM volume in CTA of the aorta.Methods77 patients referred for CTA of the aorta were scanned using a standard MDCT protocol at 100 kV. A bolus of 50 ml CM (Iopromide 300 mg Iodine/ml) at a flow rate of 6 ml/s was applied (Iodine delivery rate IDR = 1.8 g/s; Iodine load 15 g) followed by a saline bolus of 40 ml at the same flow rate. Scan delay was determined by the test bolus method. Subjective image quality was assessed and contrast enhancement was measured at 10 anatomical levels of the aorta.ResultsDiagnostic quality images were obtained for all patients, reaching a mean overall contrast enhancement of 324 ± 28 HU. Mean attenuation was 350 ± 60 HU at the thoracic aorta and 315 ± 83 HU at the abdominal aorta.ConclusionsA straightforward low volume CM protocol proved to be technically feasible and led to CTA examinations reaching diagnostic image quality of the aorta at 100 kV. Based on these findings, the use of a relatively small CM bolus can be incorporated into routine clinical imaging.

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Reduced contrast medium in abdominal aorta CTA using a multiphasic injection technique

Cited by 10 publications

References 8 publications

Feasibility of spectral imaging with low-concentration contrast medium in abdominal CT angiography of obese patients

Feasibility of spectral imaging with low-concentration contrast medium in abdominal CT angiography of obese patients

New and Evolving Concepts in CT for Abdominal Vascular Imaging

Feasibility of low contrast media volume in CT angiography of the aorta

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