High-resolution MR imaging of the skin: normal imaging features [in French]

7‐Tesla MR imaging of non‐melanoma skin cancer samples: correlation with histopathology

“…MRI performance in differentiating papillary dermis involvement from reticular dermis involvement was also insufficient because those two sublayers of the skin were not identifiable. Whereas in vivo a superficial high‐signal layer has been described within the dermis of the face, which nature is not completely elucidated to this day , we did not observe it in vitro . The high signal of fatty hypodermis was not modified by formalin fixation, but correlation between MRI and pathology was not good for the observation of hypodermis invasion (Kappa = 0.26).…”

“…Non‐invasive evaluation of normal skin with high‐resolution MRI is well established . The design of customized surface coils and high magnetic fields has enabled a better MRI characterization of the different normal skin layers. To the best of our knowledge, there is only one promising study in the literature about the ability of MRI to measure extent of skin tumors , but bias between MRI and histopathology has not been measured.…”

In vivo skin moisturizing measurement by high‐resolution 3 Tesla magnetic resonance imaging

“…The different skin layers were accurately visible (Fig. ) and their MRI appearance was similar to the literature descriptions .…”

“…Transverse relaxation (T2) is a good indicator of free water in tissue. Moreover, the amount of free water can be related to the level of moisture content .…”

“…Over the past 25 years, numerous MR studies dealing with the exploration of the skin in vivo were conducted from 0.5 to 7T , most often at 1.5T with experimental coils. None of these procedures used a dedicated and commercially marketed coil at 3T.…”