Evaluation of a 32-channel versus a 12-channel head coil for high-resolution post-contrast MRI in giant cell arteritis (GCA) at 3T

Franke, Philipp; Markl, Michael; Heinzelmann, Sonja; Vaith, P; Bürk, Jonas; Langer, Mathias; Geiger, Julia

doi:10.1016/j.ejrad.2014.06.022

Cited by 15 publications

(8 citation statements)

References 21 publications

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“…Using this coil, we received a significant amount of NMR signal from a small object and consequently obtained high-resolution images (Figure 3B). A 32ch head coil, which is a signalreceiving device used to image the head (particularly the brain) with high resolution (Franke et al 2014;Parikh et al 2011), has a good SNR in this MRI system; however, a small-bore receiver coil offers an SNR that is approximately 11 times higher (Figure 4). Since the usefulness of the small-bore receiver coil is evident in this study, in the future, it can be used in various applications involving other small objects.…”

Section: Discussionmentioning

confidence: 99%

Development of a dynamic imaging method for gravitropism in pea sprouts using clinical magnetic resonance imaging system

Nakai

Azuma

Nakaso

et al. 2020

Plant Biotechnology

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Although magnetic resonance imaging (MRI) is a useful technique, only a few studies have investigated the dynamic behavior of small subjects using MRI owing to constraints such as experimental space and signal amount. In this study, to acquire high-resolution continuous three-dimensional gravitropism data of pea (Pisum sativum) sprouts, we developed a small-bore MRI signal receiver coil that can be used in a clinical MRI and adjusted the imaging sequence. It was expected that such an arrangement would improve signal sensitivity and improve the signal-to-noise ratio (SNR) of the acquired image. All MRI experiments were performed using a 3.0-T clinical MRI scanner. An SNR comparison using an agarose gel phantom to confirm the improved performance of the small-bore receiver coil and an imaging experiment of pea sprouts exhibiting gravitropism were performed. The SNRs of the images acquired with a standard 32-channel head coil and the new small-bore receiver coil were 5.23±0.90 and 57.75±12.53, respectively. The SNR of the images recorded using the new coil was approximately 11-fold higher than that of the standard coil. In addition, when the accuracy of MR imaging that captures the movement of pea sprout was verified, the difference in position information from the optical image was found to be small and could be used for measurements. These results of this study enable the application of a clinical MRI system for dynamic plant MRI. We believe that this study is a significant first step in the development of plant MRI technique.

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Section: Discussionmentioning

confidence: 99%

Development of a dynamic imaging method for gravitropism in pea sprouts using clinical magnetic resonance imaging system

Nakai

Azuma

Nakaso

et al. 2020

Plant Biotechnology

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“…The use of a 32 channel surface coil appears to offer no advantage to a 12 channel coil, which potentially allows combination with neck and body coils for a more comprehensive vascular assessment [35].…”

Section: Magnetic Resonance Imagingmentioning

confidence: 99%

Imaging in Giant Cell Arteritis

Khan

Dasgupta

2015

Curr Rheumatol Rep

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Much progress has been made in the use of imaging as a diagnostic tool in giant cell arteritis (GCA), which assists in the management of patients where the initial diagnosis is unclear. This includes patients with atypical cranial symptoms, or with predominantly systemic, constitutional or limb symptoms. Ultrasound and magnetic resonance imaging are capable of visualising both the cranial and extracranial large vessel circulation, with vessel wall thickening and stenotic lesions being visualised. Computed tomographic angiography is helpful in visualising the aorta for aneurysm complicating GCA but can also detect vessel wall thickening in established large vessel vasculitis. PET-CT is a very sensitive test for early vascular inflammation in extracranial large vessel vasculitis, before aneurysmal or stenotic lesions have developed, of use in the patient with unexplained constitutional symptoms. The place of imaging in the follow-up of GCA is being investigated, and repeated imaging may be useful in select cases. Generally, vascular abnormalities become less defined once glucocorticoid treatment has been started, and therefore, imaging studies must be conducted early as part of a GCA fast-track assessment.

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“…Research shows that eccentric wall enhancement is present more often in intracranial atherosclerotic lesions than in autoimmune or infectious vasculitis [17]. However, concentric wall enhancement IVWM has also been reported in atherosclerotic stroke, RCVS, drug-induced vasculopathy, Graves disease and after both arterial thrombolysis and mechanical thrombectomy [20,17,72,75,[105][106][107].…”

Section: Comparisons To Histopathologymentioning

confidence: 99%

“…As MRI scanners improve in efficiency, field strength, coil element technology and compressed sensing techniques become more efficient, sequences will further shorten with improved coverage [19]. Currently, the majority of research has been conducted using a 12-or 16-channel coil, although data suggests that a 32-channel coil improves the ability to detect pathology in the more peripheral vessels, and may become more prevalent in the future [20].…”

Section: Introductionmentioning

confidence: 99%

Intracranial vessel wall MRI: a review of current indications and future applications

et al. 2016

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Background: Intracranial vessel wall MRI (IVWM) is a new diagnostic imaging approach with the goal of evaluating intracranial vascular pathology by directly visualizing arterial vessel wall abnormalities with MR sequences, preferably at 3 Tesla field strength, that suppress blood and have excellent spatial resolution. Body: The differentiation of intracranial vascular pathology has historically relied on luminal imaging techniques that depict the alteration of flow created by atherosclerotic stenosis or vasospasm. With IVWM, it is possible to identify distinct radiologic findings of the pathology within the intracranial vessel wall itself, ranging from arterial dissection to vasculitis. Futhermore, IVWM imaging characteristics, such as post-contrast enhancement, can elucidate the temporal relationship between imaging findings and clinical pathology; and may predict future behavior of unruptured aneurysms or atherosclerotic plaques. Conclusion: We present a review of the basic IVWM imaging techniques and the relevant published literature on IVWM, with a focus on evidence-based diagnostic indications for IVWM and discussion of the strengths and weaknesses of each indication. Finally, we discuss how IVWM can be used to differentiate between intracranial pathology and future directions for IVWM research.

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Evaluation of a 32-channel versus a 12-channel head coil for high-resolution post-contrast MRI in giant cell arteritis (GCA) at 3T

Cited by 15 publications

References 21 publications

Development of a dynamic imaging method for gravitropism in pea sprouts using clinical magnetic resonance imaging system

Development of a dynamic imaging method for gravitropism in pea sprouts using clinical magnetic resonance imaging system

Imaging in Giant Cell Arteritis

Intracranial vessel wall MRI: a review of current indications and future applications

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