Feasibility study of 3-T MR imaging of the skin

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• 作者：S¨¦bastien Aubry ; C¨¦line Casile ; Philippe Humbert ; J¨¦rome Jehl ; Chrystelle Vidal and Bruno Kastler
• 关键词：Skin imaging ; MRI ; 3 Tesla ; Normal ; Feasability and quality study
• 刊名：European Radiology
• 出版年：2009
• 出版时间：July, 2009
• 年：2009
• 卷：19
• 期：7
• 页码：1595-1603
• 全文大小：228.8 KB

文摘

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 ¦Ìm), 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 ≥ 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.