Steven Poelzing,Rengasayee Veeraraghavan,Adam Smoot
申请号：
US12423618
公开号：
US08808668B2
申请日:
2009.04.14
申请国别(地区):
US
年份:
2014
代理人:
摘要：
The present invention provides methods and compositions for modulating x-ray attenuation, where the x-ray attenuation compound can comprise a molecule having at least two conformational states, a first k-edge atom attached to the molecule at a first position, and a second k-edge atom attached to the molecule at a second position, where the molecule changes from a first conformational state to a second conformational state in response to an external stimulus. Additionally, a first interatom distance between the first k-edge atom and the second k-edge atom in the first conformational state can be within a first harmonic error of 0 to about 0.2, and a second interatom distance between the first k-edge atom and the second k-edge atom in the second conformational state can be within a second harmonic error of about 0.8 to 1.0.
