Value of Fat Suppression in the MRI Evaluation of Suspected Arrhythmogenic Right Ventricular Dysplasia

Abbara, Suhny; Migrino, Raymond Q.; Sosnovik, David E.; Leichter, Jeffrey; Brady, Thomas J.; Holmvang, Godtfred

doi:10.2214/ajr.182.3.1820587

Cited by 27 publications

(10 citation statements)

References 12 publications

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“…That study was multicenter and used non-breath hold conventional spin imaging; a method not currently used at most sites owing to low image quality with resulting frequent motion artifacts. Our findings are similar to the single-center results reported by Abbara et al (14), who used conventional spin-echo images with fat suppression and demonstrated good agreement for intramyocardial fat detection. However, the utility of fat-suppression was not separately assessed in our study.…”

Section: Discussionsupporting

confidence: 91%

Magnetic Resonance Imaging of Arrhythmogenic Right Ventricular Dysplasia

Tandri

Castillo

Ferrari

et al. 2006

Journal of the American College of Cardiology

169

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Section: Discussionsupporting

confidence: 91%

Magnetic Resonance Imaging of Arrhythmogenic Right Ventricular Dysplasia

Tandri

Castillo

Ferrari

et al. 2006

Journal of the American College of Cardiology

169

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“…Firstly, it is shown how radiofrequency (rf) preparation pulses can be added to existing pulse sequences to alter their contrast behaviour: An inversion pulse added to a black-blood FSE/TSE pulse sequence enhances T1 and T2 weighted contrast for imaging of myocardial oedema [10]. A fat suppression pulse added to an existing pulse sequence selectively suppresses the MR signal contribution from lipid based tissues [11], thus improving the delineation of non-lipid based structures. More complex preparation pulses may also be added to the cine gradient echo pulse sequence to apply a line or grid pattern to achieve myocardial tissue tagging that allows visualisation of intra-myocardial motion [12,13].…”

Section: Reviewmentioning

confidence: 99%

Cardiovascular magnetic resonance physics for clinicians: part II

Biglands

Radjenovic

Ridgway

2012

Journal of Cardiovascular Magnetic Resonance

142

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This is the second of two reviews that is intended to cover the essential aspects of cardiovascular magnetic resonance (CMR) physics in a way that is understandable and relevant to clinicians using CMR in their daily practice. Starting with the basic pulse sequences and contrast mechanisms described in part I, it briefly discusses further approaches to accelerate image acquisition. It then continues by showing in detail how the contrast behaviour of black blood fast spin echo and bright blood cine gradient echo techniques can be modified by adding rf preparation pulses to derive a number of more specialised pulse sequences. The simplest examples described include T2-weighted oedema imaging, fat suppression and myocardial tagging cine pulse sequences. Two further important derivatives of the gradient echo pulse sequence, obtained by adding preparation pulses, are used in combination with the administration of a gadolinium-based contrast agent for myocardial perfusion imaging and the assessment of myocardial tissue viability using a late gadolinium enhancement (LGE) technique. These two imaging techniques are discussed in more detail, outlining the basic principles of each pulse sequence, the practical steps required to achieve the best results in a clinical setting and, in the case of perfusion, explaining some of the factors that influence current approaches to perfusion image analysis. The key principles of contrast-enhanced magnetic resonance angiography (CE-MRA) are also explained in detail, especially focusing on timing of the acquisition following contrast agent bolus administration, and current approaches to achieving time resolved MRA. Alternative MRA techniques that do not require the use of an endogenous contrast agent are summarised, and the specialised pulse sequence used to image the coronary arteries, using respiratory navigator gating, is described in detail. The article concludes by explaining the principle behind phase contrast imaging techniques which create images that represent the phase of the MR signal rather than the magnitude. It is shown how this principle can be used to generate velocity maps by designing gradient waveforms that give rise to a relative phase change that is proportional to velocity. Choice of velocity encoding range and key pitfalls in the use of this technique are discussed.

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“…One relatively commonly employed pulse sequence for T2-weighted CMR imaging is short-inversion-time inversionrecovery (STIR) imaging, which imparts T2 contrast based on a preparation consisting of several short inversion pulses prior to image read-out and demonstrates minimal fat signal (212). Following pre-contrast T1-and T2-weighted image acquisition, images with and without fat suppression pulses should be obtained so that regions of interest that may contain fat may be identified and considered (213,214).…”

Section: Cmr Protocol For Cardiac Tumorsmentioning

confidence: 99%

Cardiovascular Magnetic Resonance of Primary Tumors of the Heart: A Review

Fieno¹,

Saouaf²,

Thomson³

et al. 2006

Journal of Cardiovascular Magnetic Resonance

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Overall, the prevalence of primary cardiac neoplasms is approximately 0.3% and these masses should be distinguished from the myriad of other primary and secondary processes that can occur in the heart. Tumors within, attached to, or near the heart can cause direct cardiac damage, can result in thrombus formation, can compromise blood flow and can embolize distally. Hence, proper diagnosis is clinically important. It has been suggested that cardiovascular magnetic resonance (CMR) imaging is a useful tool for diagnosing and characterizing cardiac tumors. In this report, we present a case example of a patient with a large, mobile right atrial myxoma imaged by CMR with results of histopathologic analysis after excision. We also demonstrate the utilization of CMR for characterization of cardiac lesions, review the basic characteristics of primary cardiac neoplasms, provide an overview of published cases describing use of CMR, and give suggested guidelines for imaging of cardiac masses with emphasis on diagnosis of cardiac tumors. CMR is an important technique for diagnosing and characterizing cardiac tumors.

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Value of Fat Suppression in the MRI Evaluation of Suspected Arrhythmogenic Right Ventricular Dysplasia

Abstract: The use of fat-suppressed in addition to non-fat-suppressed conventional T1-weighted spin-echo imaging increased interobserver agreement and confidence in diagnosis and evaluation of intramyocardial fatty infiltration in patients who were suspected to have ARVD.

Cited by 27 publications

References 12 publications

Magnetic Resonance Imaging of Arrhythmogenic Right Ventricular Dysplasia

Magnetic Resonance Imaging of Arrhythmogenic Right Ventricular Dysplasia

Cardiovascular magnetic resonance physics for clinicians: part II

Cardiovascular Magnetic Resonance of Primary Tumors of the Heart: A Review

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