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Lesion size inaccuracies in digital mammography
Jean R Paquelet1, R Edward Hendrick
1Advanced Medical Imaging Associates, Fort Collins, CO 80525, USA.
AJR. American Journal of Roentgenology
|December 24, 2009
Summary
Digital mammography systems can inaccurately measure lesion sizes using magnification. Routine quality control is essential for accurate digital mammography lesion size assessment across all acquisition-display combinations.
Area of Science:
- Radiology
- Medical Imaging
- Quality Control
Background:
- Digital mammography is a key tool for breast cancer detection.
- Accurate lesion size measurement is critical for diagnosis and treatment planning.
Purpose of the Study:
- To evaluate the impact of digital mammography acquisition and display settings on lesion size accuracy.
- To assess the reliability of geometrically magnified images in lesion size estimation.
Main Methods:
- A clinical case study was analyzed.
- Measurements were performed using the American College of Radiology mammography phantom.
- Various digital mammography acquisition and image display combinations were tested.
Main Results:
- Certain digital mammography acquisition and display combinations result in significant over- and underestimation of lesion sizes.
- Geometrically magnified images are particularly susceptible to these measurement inaccuracies.
Conclusions:
- The accuracy of lesion size measurements in all magnification modes requires routine quality control.
- Each digital mammography acquisition-display system combination should undergo regular testing to ensure measurement accuracy.
