Cignini Roberto, Melzi Roberto, Tedoldi Fabio, Casieri Cinzia, De Luca Francesco
INFM-CRS SOFT and Dipartimento di Fisica, Università degli Studi La Sapienza, Rome, Italy.
Magn Reson Imaging. 2006 Jul;24(6):813-8. doi: 10.1016/j.mri.2006.03.005. Epub 2006 May 26.
The nuclear magnetic resonance (NMR) surface scanner, which provides images of sample surfaces larger than the probe dimension, has been realized using a single-sided device. Although conditioned by distortion effects originated by convolution between the sensitive volume of the probe and the space structures to be imaged, the scanner is able to provide images with good spatial resolution. The images obtained by the surface scanner can be made sensitive to relaxation parameters, magnetization or molecular self-diffusion; also, the dimension perpendicular to the sample surface can be scanned by varying the depth from which the probe detects the sample signal. It may scan surfaces arbitrarily large and with some degree of curvature. This aspect, together with the noninvasive characteristic of the apparatus, indicates that the surface scanner could be used profitably in the field of cultural heritage, where it could provide NMR maps of frescos, paintings on wood, marble artifacts, books and others.
核磁共振（NMR）表面扫描仪利用单面装置实现了对大于探头尺寸的样品表面进行成像。尽管受到探头敏感体积与待成像空间结构之间卷积产生的畸变效应的影响，但该扫描仪仍能够提供具有良好空间分辨率的图像。表面扫描仪获得的图像可以对弛豫参数、磁化或分子自扩散敏感；此外，通过改变探头检测样品信号的深度，可以扫描垂直于样品表面的维度。它可以扫描任意大且具有一定曲率的表面。这一方面，连同该仪器的非侵入性特点，表明表面扫描仪在文化遗产领域可以得到有益的应用，在该领域它可以提供壁画、木板画、大理石制品、书籍等的核磁共振图谱。
