Underlying factors that affect ultrasound conspicuity of breast biopsy markers: an exploratory study
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View abstract on PubMed
Summary
This summary is machine-generated.Ultrasound clip conspicuity in breast cancer management is affected by viewing angle, not off-gassing. Adjusting scanner settings may not fully recover visibility if repositioning fails.
Area Of Science
- Medical Imaging
- Surgical Oncology
Background
- Neoadjuvant systemic therapy (NST) is used for node-positive breast cancer to reduce surgery.
- Ultrasound-guided biopsy clips are standard for marking positive nodes but can become difficult to visualize after NST.
- Poor understanding of clip conspicuity changes hinders accurate localization for subsequent procedures.
Purpose Of The Study
- To investigate mechanisms affecting ultrasound clip conspicuity after neoadjuvant therapy.
- To determine if ultrasound scanner settings can improve clip visibility.
Main Methods
- Assessed the effect of viewing angle on the brightness of five commercial clips in gelatin phantoms.
- Evaluated clip conspicuity over time ex vivo to rule out off-gassing effects.
Main Results
- Clip brightness varied significantly with viewing angle for certain clips.
- No evidence of clip conspicuity changes due to off-gassing was observed over time.
Conclusions
- Viewing angle, influenced only by probe position, is a key factor in clip conspicuity.
- Ultrasound scanner settings cannot compensate for poor visibility caused by viewing angle.
- Other bright structures in the ultrasound field can also obscure clip location.
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