Skip to main content

Volume 2 Supplement 2

Symposium Mammographicum 2000

Investigation into possible causes of blurring in mammograms

Full text

Technical recalls cause unnecessary anxiety to the women concerned and an increased workload for the screening unit. A review of technical recalls at Bolton Breast Unit found that over 90% were due to blurred images. This study aimed to identify causes of blurring and to reduce the number of technically inadequate films. X-rays were taken using static IGE DMR & 800T units and Kodak Min-R 2000 film/screen combination. Exposure factors (kVp, mAs, target & filter) were selected automatically, using 'Standard' mode. Two groups of films were examined; group 1 (n = 45) were identified as blurred at reporting stage and group 2 (n = 45) were technically adequate films selected randomly.

Analysis showed that the mean compression force applied was 10 dN and 13 dN for the blurred and adequate films, respectively, which is a significant difference (P < 0.01). The breast thickness and mAs were significantly higher in the blurred group (P < 0.01). With the 800T unit, the rhodium filter was selected for 90% of blurred films compared to 36% of adequate films. Inadequate compression in the blurred group (which would result in greater breast thickness, longer exposures and earlier selection of rhodium target/filter) is suspected. A minimum compression force has been recommended at the unit.

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Seddon, D., Schofield, K. & Waite, C. Investigation into possible causes of blurring in mammograms. Breast Cancer Res 2 (Suppl 2), A64 (2000). https://doi.org/10.1186/bcr253

Download citation

  • Published:

  • DOI: https://doi.org/10.1186/bcr253

Keywords

  • Cancer Research
  • Rhodium
  • Full Text
  • Compression Force
  • Longe Exposure