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The Effect of Breast Positioning on Breast Compression in Mammography: a Pressure Distribution Perspective

Dustler, Magnus LU ; Andersson, Ingvar LU ; Förnvik, Daniel LU and Tingberg, Anders LU (2012) Conference on Medical Imaging - Physics of Medical Imaging, 2012 In Medical Imaging 2012: Physics of Medical Imaging 8313.
Abstract
The standard procedure at mammography is to compress the breast in order to improve image quality, better separate tissue components and reduce absorbed dose to the breast. Traditionally, compression guidelines have been based on applied force, rather than actual thickness reduction. Structures such as the pectoral muscle are stiffer than breast tissue and if compressed along with it, as in the MLO-projection, might absorb much of the applied force. This study investigated the difference in compression of breasts before and after they were repositioned to exclude 1 cm of the juxtathoracic part. Twenty-one women were included in the study. The distribution of compression pressure was measured using thin FSR (Force Sensing Resistor) pressure... (More)
The standard procedure at mammography is to compress the breast in order to improve image quality, better separate tissue components and reduce absorbed dose to the breast. Traditionally, compression guidelines have been based on applied force, rather than actual thickness reduction. Structures such as the pectoral muscle are stiffer than breast tissue and if compressed along with it, as in the MLO-projection, might absorb much of the applied force. This study investigated the difference in compression of breasts before and after they were repositioned to exclude 1 cm of the juxtathoracic part. Twenty-one women were included in the study. The distribution of compression pressure was measured using thin FSR (Force Sensing Resistor) pressure sensors attached to the compression paddle. Breast thickness and compression force were measured by the mammographic device. Compared to standard positioning the repositioned breasts were thinner by 4.4 +/- 2.3 mm (P < 0.001) (from 50.3 mm to 45.9 mm) and had a 12.3 +/- 24.5 cm(2) (P = 0.032) larger area over which pressure was distributed (from 97.6 cm(2) to 109.9 cm(2)), despite less of the breast being included in the projection. This indicates that the inclusion of the pectoral muscle and other juxtathoracic structures in the MLO-projection substantially affects pressure distribution and prevents proper compression of the breast. The results suggest that the exact positioning of the MLO-projection should be carefully evaluated in order to find a balance between breast compression and tissue inclusion. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Breast, compression, mammography, positioning, pressure
in
Medical Imaging 2012: Physics of Medical Imaging
volume
8313
publisher
SPIE
conference name
Conference on Medical Imaging - Physics of Medical Imaging, 2012
external identifiers
  • wos:000304768000159
  • scopus:84860361231
ISSN
1996-756X
0277-786X
DOI
10.1117/12.905746
language
English
LU publication?
yes
id
ff78494a-6e2f-486a-b44a-a91e24c38ee0 (old id 2890960)
date added to LUP
2012-07-25 15:41:49
date last changed
2017-07-23 03:22:36
@inproceedings{ff78494a-6e2f-486a-b44a-a91e24c38ee0,
  abstract     = {The standard procedure at mammography is to compress the breast in order to improve image quality, better separate tissue components and reduce absorbed dose to the breast. Traditionally, compression guidelines have been based on applied force, rather than actual thickness reduction. Structures such as the pectoral muscle are stiffer than breast tissue and if compressed along with it, as in the MLO-projection, might absorb much of the applied force. This study investigated the difference in compression of breasts before and after they were repositioned to exclude 1 cm of the juxtathoracic part. Twenty-one women were included in the study. The distribution of compression pressure was measured using thin FSR (Force Sensing Resistor) pressure sensors attached to the compression paddle. Breast thickness and compression force were measured by the mammographic device. Compared to standard positioning the repositioned breasts were thinner by 4.4 +/- 2.3 mm (P &lt; 0.001) (from 50.3 mm to 45.9 mm) and had a 12.3 +/- 24.5 cm(2) (P = 0.032) larger area over which pressure was distributed (from 97.6 cm(2) to 109.9 cm(2)), despite less of the breast being included in the projection. This indicates that the inclusion of the pectoral muscle and other juxtathoracic structures in the MLO-projection substantially affects pressure distribution and prevents proper compression of the breast. The results suggest that the exact positioning of the MLO-projection should be carefully evaluated in order to find a balance between breast compression and tissue inclusion.},
  author       = {Dustler, Magnus and Andersson, Ingvar and Förnvik, Daniel and Tingberg, Anders},
  booktitle    = {Medical Imaging 2012: Physics of Medical Imaging},
  issn         = {1996-756X},
  keyword      = {Breast,compression,mammography,positioning,pressure},
  language     = {eng},
  publisher    = {SPIE},
  title        = {The Effect of Breast Positioning on Breast Compression in Mammography: a Pressure Distribution Perspective},
  url          = {http://dx.doi.org/10.1117/12.905746},
  volume       = {8313},
  year         = {2012},
}