title: Scenes from the past: MR imaging versus CT of ancient Peruvian and Egyptian mummified tissues.
abstract: Ancient Egyptian and Peruvian mummies are extremely valuable historical remains, and noninvasive methods for their examination are desirable. The current standard of reference for radiologic imaging of mummies is computed tomography (CT), with tissue having a homogeneous appearance on all CT images. It was long believed that ancient mummified tissue could not be studied with magnetic resonance (MR) imaging because of the low water content in mummies. Recently, however, the usefulness of MR imaging in the evaluation of mummified tissue was demonstrated for the first time, with use of a special ultrashort echo time technique. The authors of the present study acquired and analyzed MR imaging and CT data from the left hands of two ancient Egyptian mummies and the head of a third Egyptian mummy (ca 1500-1100 bce), as well as data from an ancient Peruvian mummy (ca 1100 ce). CT was found to provide superior detail of the anatomic structures, mainly because of its higher spatial resolution. The signal intensity of mummified tissue varied greatly on MR images; thus, the quality of these images is not yet comparable to that of clinical MR images, and further research will be needed to determine the full capacity of MR imaging in this setting. Nevertheless, additional information may theoretically be obtained with MR imaging, which should be viewed as complementary to, rather than a replacement for, CT.
authors: Swiss Mummy Project/Centre for Evolutionary Medicine, Institute of Anatomy, University of Zürich, Winterthurerstr 190, 8057 Zürich, Switzerland.
authors: Lena Maria
authors: LM
authors: Ohrström
authors: Hendrik
authors: H
authors: von Waldburg
authors: Peter
authors: P
authors: Speier
authors: Michael
authors: M
authors: Bock
authors: Roland Erwin
authors: RE
authors: Suri
authors: Frank Jakobus
authors: FJ
authors: Rühli
mesh_terms: D004534:Egypt; D006801:Humans; D008279:Magnetic Resonance Imaging; D009106:Mummies; D010568:Peru; D014057:Tomography, X-Ray Computed