
doi: 10.1002/mrm.25651
pmid: 25752671
PurposeTo compare the three different short‐echo time (TE) pulse sequences ultrashort echo time (UTE), point‐wise encoding time reduction with radial acquisition (PETRA), and single point imaging (SPI) for MRI of ancient remains.MethodsMRI of mummies is challenging due to the extremely low water content and the very short transverse relaxation times T2*. To overcome the signal loss associated with the short T2*, three pulse sequences with very short TEs were compared. MR images of an ancient mummified human hand were acquired at field strengths of 1.5 Tesla (T) and 3T using home‐made solenoid Tx/Rx radiofrequency (RF) coils.ResultsIn all MR images, tissues could be differentiated and anatomical structures such as bones and tendons were clearly identified. Skin with embalming resin was hyperintense in MRI, whereas it appeared iso‐intense in computed tomography. PETRA has the highest signal to noise ratio. With UTE, short scan times and a homogeneous RF excitation can be achieved, and blurring is less pronounced than with PETRA. SPI shows no blurring artifacts; however, it requires long scan times.ConclusionThis work provided an initial analysis for the optimization of imaging protocols for paleoradiology studies with MRI, and, ultimately, for MRI of tissue with extremely short T2*. Magn Reson Med 75:701–708, 2016. © 2015 Wiley Periodicals, Inc.
610, 610 Medicine & health, Mummies, Hand, Image Enhancement, Magnetic Resonance Imaging, Radiology Nuclear Medicine and imaging, 11294 Institute of Evolutionary Medicine, 570 Life sciences; biology, 2741 Radiology, Nuclear Medicine and Imaging, Humans, Egypt
610, 610 Medicine & health, Mummies, Hand, Image Enhancement, Magnetic Resonance Imaging, Radiology Nuclear Medicine and imaging, 11294 Institute of Evolutionary Medicine, 570 Life sciences; biology, 2741 Radiology, Nuclear Medicine and Imaging, Humans, Egypt
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 17 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |
