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K. H. Lee, K. B. Sung, D. Y. Lee, S. J. Park, K. W. Kim and J. S. Yu, “Transcatheter Arterial Chemoembolization for Hepatocellular Carcinoma: Anatomic and Hemodynamic Considerations in the Hepatic Artery and Portal Vein,” Radiographics, Vol. 22, No. 5, 2002, pp. 1077-1091

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• 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.