TITLE:
Subtraction Perfusion CT: A Technical Note
AUTHORS:
Xiu-Jun Yang, Wei Li, Chi-Shing Zee
KEYWORDS:
Tomography; X-Ray Computed; Perfusion Imaging; Subtraction Technology; Subtraction Computed Tomographic Perfusion
JOURNAL NAME:
Advances in Computed Tomography,
Vol.2 No.3,
September
13,
2013
ABSTRACT:
It is challenging to attempt to obtain CT perfusion (CTP) images of the
hyperdense tissues, which could conceal the density of contrast material during
perfusion study. We report a new technique of subtraction CTP (SCTP) to compensate
the shortcomings. SCTP post-processed by perfusion software for the data of post-perfusion
images subtracting pre-perfusion corresponding images slice by slice in CTP
source images is technically feasible without any adverse effects on patients. It provides
a new functional imaging with quantitatively hemodynamic indexes of tissue microcirculation
and reflects accurately the change of blood flow in tissues and organs.