Espy Michelle A.,Matlashov Andrei N.,Schultz Larry J.,Volegov Petr L.,Urbaitis Algis,Sandin Henrik,Yoder Jacob,Surko Stephen
申请号：
US201313869705
公开号：
US9557394(B2)
申请日:
2013.04.24
申请国别(地区):
美国
年份:
2017
代理人:
Lewis Roca Rothgerber Christie LLP
摘要：
Methods for determining the identity of a substance are provided. A classification parameter set is defined to allow identification of substances that previously could not be identified or to allow identification of substances with a higher degree of confidence. The classification parameter set may include at least one of relative nuclear susceptibility (RNS) or an x-ray linear attenuation coefficient (LAC). RNS represents the density of hydrogen nuclei present in a substance relative to the density of hydrogen nuclei present in water. The extended classification parameter set may include T1, T2, and/or T1ρ as well as at least one additional classification parameter comprising one of RNS or LAC. Values obtained for additional classification parameters as well as values obtained for T1, T2, and T1ρ can be compared to known classification parameter values to determine whether a particular substance is a known material.
