A3 Anatomie de la peau en IRM : aspects normaux et premieres applications en pathologie

Sans, N.; Lalande, C.; Assouère, M.-N.; Loustau, O.; Despeyroux-Ewers, M.L.; Railhac, J.-J.

doi:10.1016/s0221-0363(04)77537-x

Cited by 1 publication

(3 citation statements)

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“…However, they can be seen only in the 3D FIESTA sequences at 1.5 T and inconsistently in the calf [5]. This observation needs to be confirmed by direct comparison.…”

Section: Radiological Anatomymentioning

confidence: 83%

“…The banding artefact is relatively specific to high magnetic fields because it is due to B 0 inhomogeneity: it is intrinsically more significant on the 3D FIESTA sequence because relatively small frequency shifts lead to reduced transversal steady-state magnetization and thus to band-shaped signal losses in the image [9]. Indeed, although the banding artefact was not described in the work carried out at 1.5 T [5], this artefact was quasiconstant in our study, but appears difficult to avoid altogether. Some authors suggest trying to move it outside a region of interest by applying a frequency offset to the nominal resonance frequency [9].…”

Section: Tolerancementioning

confidence: 99%

“…We studied two different cutaneous sites: the calf, described by Sans [5] as being the area which is the most sensitive to technical artefacts; and the face, which is also likely to be more sensitive to movement artefacts.…”

Section: Objectivesmentioning

confidence: 99%

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Feasibility study of 3-T MR imaging of the skin

et al. 2009

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The purpose of this study was to assess the quality of 3-T magnetic resonance (MR) imaging of the skin, to describe skin anatomy at 3 T and to discuss future prospects of skin MRI. A 7-cm single-element surface receiver coil was developed for our 3-T MRI system. Thin sections were obtained with a three-dimensional FIESTA acquisition sequence and a spin-echo T1-weighted sequence (SET1). Prospective analysis was performed twice by two radiologists independently. Thirty-six healthy volunteers were included and underwent MRI on the face and the calf. Image quality was assessed regarding visibility of skin layers and quantification of artefacts. High field strength MR enables imaging of the skin with a high spatial in-plane resolution (87-180 microm), the total examination lasting 15-20 min. Image quality was excellent for the calf (mean SET1 quality = 96%) with a high intra- and interobserver correlation (SET1 kappa coefficient concerning visibility of epidermis, dermis and hypodermis > or = 0.84). Motion artefacts resulted in a small loss of quality and reproducibility for the face. In conclusion, 3-T MR allows high spatial resolution imaging of the skin and can potentially provide an accurate noninvasive means of analysing the skin.

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“…However, they can be seen only in the 3D FIESTA sequences at 1.5 T and inconsistently in the calf [5]. This observation needs to be confirmed by direct comparison.…”

Section: Radiological Anatomymentioning

confidence: 83%