Back to the list
Congress: ECR25
Poster Number: C-20969
Type: Poster: EPOS Radiologist (educational)
DOI: 10.26044/ecr2025/C-20969
Authorblock: N. Shabshin1, G. Yoskovitz2, Y. S. Schiffenbauer2, Y. Kimmel2; 1Afula/IL, 2Petach Tikva/IL
Disclosures:
Nogah Shabshin: Consultant: Nano-x imaging
Guy Yoskovitz: Nothing to disclose
Yael S Schiffenbauer: Nothing to disclose
Yotam Kimmel: Nothing to disclose
Keywords: Lung, Plain radiographic studies, Diagnostic procedure, Artifacts
Learning objectives Radiography of overweight and obese patients can be challenging and frequently requires higher radiation dose due to increased body thickness and tissue density. Occasionally, results may be suboptimal or non-diagnostic due to reduced image quality. The purpose of this study was to evaluate the impact of different body habitus (soft tissue thickness) on the quality of Thoracic Skeleton and Chest/Lungs Digital Tomosynthesis (DTS) compared to radiography. 
Read more Background A phantom-based study was executed to evaluate the effect of body habitus on DTS and radiography, using a multipurpose chest phantom N1 “Lungman” (Kyoto Kagaku, Japan). Soft tissue thickness simulating up to 95 percentile of the USA population dimensions (circumference) was obtained by adding increasing numbers of gel layers (Bolux-I, Action Products Inc, USA, a tissue-equivalent flexible material with a physical density of approximately 1.03g/cc)1. All gel layers were positioned on the “anterior chest wall”. Chests/lungs simulations were done with...
Read more Findings and procedure details Chest/Lungs:CXR: Evaluation of the lungs demonstrated gradual increase in lung density, with the higher numbers of added gel layers. The right lung nodule was not seen on any of the images. The left nodule was barely seen with or without gel layers. Even when retrospectively evaluated they appeared as hazy slight increased opacities and did not have the appearance of a nodule (Fig. 2).DTS: The increasing number of the gel layers had minimal impact on the lung opacity. All studies...
Read more Conclusion DTS imaging may be superior to conventional radiography in detecting lung and skeletal abnormalities even in patients with high BMI, based on a phantom study. The impact of thick soft tissues on the lungs and joints is minimal on DTS and is more prominent on conventional radiographs.  
Read more References 1. R.F Moyer et al.  A Surface Bolus Material for High-Energy Photon and Electron Therapy. Radiology, Vol. 146, No. 2, 531-2, February 1983.
Read more
GALLERY