Applying focal spot unsharpness to resolve ambiguity in 3D reconstruction from biplane coronary angiograms

Cornelis H. Slump; Marc Schrijver; Corstiaan J. Storm

doi:10.1117/12.428170

21 May 2001 Applying focal spot unsharpness to resolve ambiguity in 3D reconstruction from biplane coronary angiograms

Cornelis H. Slump, Marc Schrijver, Corstiaan J. Storm

Proceedings Volume 4321, Medical Imaging 2001: Physiology and Function from Multidimensional Images; (2001) https://doi.org/10.1117/12.428170
Event: Medical Imaging 2001, 2001, San Diego, CA, United States

Abstract

In our research program that aims to quantify the functional relevance of partly occluded coronary vessels, we need in one of the approaches to the problem, the 3D structure of the pertinent vessels. The use of standard biplane projection angiograms is limited by the ambiguity about the orientation not resolved by the two projections. In this paper we study to solve the orientation ambiguity based upon the geometrical unsharpness due to the focal spot of the X-ray tube. We describe the influence of the focal spot on the imaging MTF. We present the analysis of the biplane projection geometry based upon fan beam and focal spot. We derive the analytical equation of the MTF due to focal spot and geometrical magnification. We also analyze and indicate practical situations of coronaries from real angiograms.

Citation Download Citation

Cornelis H. Slump, Marc Schrijver, and Corstiaan J. Storm "Applying focal spot unsharpness to resolve ambiguity in 3D reconstruction from biplane coronary angiograms", Proc. SPIE 4321, Medical Imaging 2001: Physiology and Function from Multidimensional Images, (21 May 2001); https://doi.org/10.1117/12.428170

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available