Automatic detection of ischemic stroke area from CT perfusion maps Cerebral Blood Volume and Cerebral Blood Flow

Author

Fueanggan, Santichai ; Chokchaitam, Somchart ; Muengtaweepongsa, Sombat

Author_Institution

Dept. of Electr. & Comput. Eng., Thammasat Univ., Pathumthani, Thailand

fYear

2011

fDate

7-9 Dec. 2011

Firstpage

1

Lastpage

6

Abstract

The objective of this research is to specify Ischemic Stroke Area by using statistical methods and probability to divide image data into 2 areas, normal and abnormal areas of the brain, in order to automatically assign the Threshold level of Computed Tomography Perfusion (CTP) images from CBV (Cerebral Blood Volume) and CBF (Cerebral Blood Flow) images and apply to Digital Image Processing to analyze data images. The results will be shown in N-Match (normal tissue areas), D-Match (dead tissue areas), Mismatch (blood clot tissue areas) and Undefined area. Then, separate the brain into left and right to specify Ischemic Stroke Area. From experiments with 5 patient samples with 256×256 pixels images, N-Match, D-Match, Mismatch and Undefined values depend on Threshold value gathered from the difference of Mean and Standard Deviation values of CBV and CBF images. As a result of experiment, it is possible to sort elementary information of left and right side of the brain to specify Ischemic Stroke Area to compare the results with brain specialists.

Keywords

biological tissues; brain; computerised tomography; diseases; haemodynamics; haemorheology; medical image processing; probability; statistical analysis; CBF image; CBV image; CT perfusion map; D-Match area; N-Match area; automatic detection; blood clot tissue area; brain; cerebral blood flow; cerebral blood volume; computed tomography perfusion image; data image; dead tissue area; digital image processing; image data; ischemic stroke area; normal tissue area; probability; standard deviation value; statistical method; threshold value; Computers; Cerebral Blood Flow(CBF); Cerebral Blood Volume(CBV); Computer Tomography Perfusion(CTP); Digital Image Processing(DIP); Ischemic Stroke;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communications Systems (ISPACS), 2011 International Symposium on

Conference_Location

Chiang Mai

Print_ISBN

978-1-4577-2165-6

Type

conf

DOI

10.1109/ISPACS.2011.6146202

Filename

6146202