Local Time : 11:48 CET

C-0508 - Accurate measurements of Enhanced CR, MRI, and CT Images via a De-Convolution CAD.

K. M. Chui1, S. L. Chui2; 1 Uxbridge/UK 2 Prince George/CA Type: Scientific Exhibit
Area of Interests: Oncology, Bones, Anatomy
Imaging Techniques: CAD, CT, MR
Procedures: Efficacy studies, Computer Applications-Detection, diagnosis, CAD
Special Focuses: Aneurysms, Cancer
Add poster to my schedule In your schedule (remove)

Direct link to access the poster (click here)

Aims and objectives: The Penumbra-Effect describes blurring at the margins of an image-profile due to the finite size of the energy source. We used a computer aided detection (CAD) algorithm based on the De-Convolution Technique [1] to pinpoint true-edge positions to sub-pixel accuracy and remove the Penumbra-Effect via[...]

Methods and materials: We used Composite phantom and New-York Catphan-500 images for calibration. We analyzed 2 CR images, 30 radial MRA MIP images, and 155 CT images and took measurements.  

Results: Phantom calibrations: Measurements: At 1% low-contrast, distance accurate to 1/44th of a pixel, and area/volume to 1/14th of a pixel.   Field-Examples:   (1) Computed Radiograph of a 2 year old female infant patient's left Tibia & Fibula were examined. Figures 1, 2a, 2b, & 3 illust[...]

Conclusion: Accurate measurements of distance, area, and volume in CR, MRI, and CT obtained using this de-convolution CAD can be used to monitor disease response to therapy.      

Personal information: For further inquiries, please contact Dr. Kui Ming Chui, either via website: www.iet.org.uk or via e-mail: ming-chui@iet.org.uk.      

References: [1] “ A De-Convolution Technique used for NDT in X-ray and CT”, by K.M.Chui, S.L.Chui, A. Andrew, and D.B.Stanfield, Oral/Full paper presentation in 17th World Conference on Non-Destructive Testing (17WCNDT), Shanghai, China, October 25-28, 2008 (NDT.net – The e-Journal & Database of Non-Destruc[...]

This website uses cookies. Learn more