Investigation of the effect of tube motion in breast tomosynthesis: continuous or step and shoot?

Eman Shaheen; Nicholas Marshall; Hilde Bosmans

doi:10.1117/12.877348

16 March 2011 Investigation of the effect of tube motion in breast tomosynthesis: continuous or step and shoot?

Eman Shaheen, Nicholas Marshall, Hilde Bosmans

Proceedings Volume 7961, Medical Imaging 2011: Physics of Medical Imaging; 79611E (2011) https://doi.org/10.1117/12.877348
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

Abstract

Digital breast tomosynthesis (DBT) is a 3D modality that may have the potential to complement or replace 2D mammography. One major design aspect of DBT systems is the choice of tube motion: continuous tube motion during x-ray exposure or the step and shoot method where the tube is held fixed while x-rays are released. Systems with continuous tube motion experience focal spot motion blurring but a reduced patient motion blurring due to potentially faster total acquisition times when compared to the step and shoot approach. In order to examine the influence of focus motion on lesion detectability, a simulation environment was developed where lesions such as microcalcifications and masses are inserted into different thicknesses of theoretical materials. A version of the power law noise method was employed to approximate realistic anatomical breast volumes. The simulated projection images were reconstructed and appropriate metrics (peak contrast, contrast and signal-difference-to-noise ratio) of the lesions in the two different modes were compared. Results suggest an increase of the peak contrasts in the microcalcification data sets by 8 - 9 % for the step-and-shoot method when compared to the continuous mode (p <0.05). While the contrast and signal-difference-to-noise- ratio calculated for the same two modes almost overlapped for the mass datasets showing a difference of only 1-2%.

Citation Download Citation

Eman Shaheen, Nicholas Marshall, and Hilde Bosmans "Investigation of the effect of tube motion in breast tomosynthesis: continuous or step and shoot?", Proc. SPIE 7961, Medical Imaging 2011: Physics of Medical Imaging, 79611E (16 March 2011); https://doi.org/10.1117/12.877348

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