Bittoun J, Saint-Jalmes H, Querleux B G, Darrasse L, Jolivet O, Idy-Peretti I, Wartski M, Richard S B, Leveque J L
Centre Inter-Etablissements de Résonance Magnétique, Université, Paris-Sud, Hôpital de Bicêtre, France.
Radiology. 1990 Aug;176(2):457-60. doi: 10.1148/radiology.176.2.2367660.
High-resolution magnetic resonance (MR) images of the skin were acquired with a whole-body MR system at 1.5 T by adding a specific imaging module: A saddle-shaped surface gradient coil was connected in place of one of the gradient coils of the system, and a surface radio-frequency coil with a 1.5-cm radius was placed at the center of the gradient coil. The images, acquired in 3 minutes 25 seconds, represent a field of view of 18 x 50 mm2, which corresponds to a pixel size of 70 x 390 micro2; the section thickness was 1.2 mm. With this spatial resolution, the different layers of the skin are clearly delineated: Epidermis appears as a high-signal-intensity layer, while dermis appears hypointense due to its very short T2. Pilosebaceous units appear as inclusions of epidermis inside dermis. The high quality of the images obtained enables in vivo MR characterization of skin.
通过添加特定成像模块，使用1.5T的全身磁共振（MR）系统获取皮肤的高分辨率MR图像：连接一个鞍形表面梯度线圈来代替系统的一个梯度线圈，并将一个半径为1.5厘米的表面射频线圈放置在梯度线圈的中心。在3分25秒内采集的图像代表18×50平方毫米的视野，对应像素大小为70×390微米²；切片厚度为1.2毫米。凭借这种空间分辨率，可以清晰地勾勒出皮肤的不同层次：表皮呈现为高信号强度层，而真皮由于其极短的T2而呈低信号。毛囊皮脂腺单位表现为真皮内的表皮包涵体。所获得图像的高质量使得能够对皮肤进行体内MR特征分析。
