Hounsfield Unit inaccuracy in computed tomography lesion size and density, diagnostic quality vs attenuation correction

Szczepura, K; Thompson, JD; Manning, D

Abstract

In computed tomography the Hounsfield Units (HU) are used as an indicator of the tissue type based on the linear attenuation coefficients of the tissue. HU accuracy is essential when this metric is used in any form to support diagnosis. In hybrid imaging, such as SPECT/CT and PET/CT, the information is used for attenuation correction (AC) of the emission images. This work investigates the HU accuracy of nodules of known size and HU, comparing diagnostic quality (DQ) images with images used for AC.

Citation

Szczepura, K., Thompson, J., & Manning, D. (2017). Hounsfield Unit inaccuracy in computed tomography lesion size and density, diagnostic quality vs attenuation correction. Proceedings of SPIE, 10136, https://doi.org/10.1117/12.2254275

• Journal Article Type: Article
• Online Publication Date: Apr 28, 2017
• Publication Date: Apr 28, 2017
• Deposit Date: Mar 14, 2019
• Journal: Proceedings of SPIE volume 10136, Medical Imaging 2017: Image Perception, Observer Performance, and Technology Assessment, 101361B
• Print ISSN: 0277-786X
• Publisher: Society of Photo-optical Instrumentation Engineers
• Volume: 10136
• DOI: https://doi.org/10.1117/12.2254275
• Publisher URL: https://doi.org/10.1117/12.2254275