Contrast enhancement for the abdomen and pelvis

Mitchell, David

doi:10.1007/pl00006899

Cited by 3 publications

(1 citation statement)

References 12 publications

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“…This physiological phenomenon allows detection of liver lesions by use of biphasic helical computed tomography (helical CT). Hypervascular lesions can be detected in the arterial phase, whereas hypovascular lesions present in the portal venous phase, respectively [4].…”

Section: Introductionmentioning

confidence: 99%

Optimization of automatic bolus tracking for timing of the arterial phase of helical liver CT

et al. 2001

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The aim of this study was to optimize bolus tracking for timing of the arterial phase of biphasic helical liver CT and to compare optimized bolus tracking to a standard delay. One hundred fifty patients were examined with six protocols: 5- or 10-s delay after triggering at a threshold of 50 or 75 or 100 HU enhancement in the aorta at the origin of the celiac arteries after injection of 120 ml contrast material at 3 ml/s. Optimal arterial enhancement was defined as 20-30% of hepatic enhancement in portal venous phase. Another 50 patients were examined with the optimized protocol and compared to 50 gender- and age-matched patients who underwent a 25-s standard delay. A 10-s delay after the 75-HU threshold resulted in the most patients with an optimal arterial phase (p < 0.01). Thirty-one of 75 patients examined with this protocol showed optimal early liver enhancement. Bolus tracking compared with standard delay revealed only a trend for a difference (p = 0.07). The outcome of automatic bolus tracking differs depending on the protocol used; however, optimal arterial phase imaging was seen in only 41% of patients, indicating only a trend for superior timing compared with a standard delay.

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Section: Introductionmentioning

confidence: 99%

Optimization of automatic bolus tracking for timing of the arterial phase of helical liver CT

et al. 2001

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The effect of intravenous gadolinium-DTPA on diffusion-weighted imaging

et al. 2006

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MR imaging: acronyms and clinical applications

Nitz

1999

European Radiology

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The intention of this article is to provide an overview of all MR imaging techniques that are accessible on most of commercially available scanners and have the potential to be used in routine clinical applications. The techniques implemented by the major vendors are briefly explained, including a comparison of the commonly used acronyms. A classification scheme is introduced which provides a reasonable illustration of similarities and differences between various techniques. The imaging techniques are divided into two main groups, the spin-echo and gradient-echo sequences. Within each group is the basic sequence, those which require a preparation of the magnetization, those which use multiple echoes to fill the k-space and those which are performed in a single shot. For each technique the typical clinical applications are listed or the potential applications which have been published.

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Contrast enhancement for the abdomen and pelvis

Cited by 3 publications

References 12 publications

Optimization of automatic bolus tracking for timing of the arterial phase of helical liver CT

Optimization of automatic bolus tracking for timing of the arterial phase of helical liver CT

The effect of intravenous gadolinium-DTPA on diffusion-weighted imaging

MR imaging: acronyms and clinical applications

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