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A protocol for imaging axillary lymph nodes in patients undergoing breast-specific gamma-imaging
Elizabeth A Jones1, Trinh D Phan, Nathalie M Johnson
1Department of Nuclear Medicine, Cancer Services, and Good Samaritan Breast Health Center Legacy Good Samaritan Hospital, Portland, Oregon, USA. eljones@lhs.org
Journal of Nuclear Medicine Technology
|February 18, 2010
Summary
Small-field-of-view gamma cameras improve breast lesion detection but exclude the axilla. This study details a new breast scintigraphy protocol for small-field-of-view systems to effectively image the axilla and axillary lymph node metastases.
Area of Science:
- Nuclear Medicine
- Radiology
- Oncology
Background:
- Small-field-of-view (SFOV) gamma cameras enhance breast lesion detection, especially for sub-centimeter lesions.
- Standard gamma cameras include the axilla in their field of view, unlike SFOV systems.
Purpose of the Study:
- To develop an axillary imaging protocol for SFOV breast scintigraphy systems.
- To evaluate the effectiveness of (99m)Tc-sestamibi breast scintigraphy for detecting axillary lymph node metastases using SFOV systems.
Main Methods:
- Development of a specific axillary imaging protocol tailored for SFOV breast scintigraphy.
- Evaluation of imaging characteristics and resolution of SFOV systems for axillary imaging.
Main Results:
- The protocol facilitates the detection of axillary lymph node metastases.
- Improved resolution of SFOV systems impacts axillary imaging, with observed normal variants detailed.
- Example patient cases illustrate the protocol's impact and limitations.
Conclusions:
- The developed protocol enables effective axillary imaging with SFOV breast scintigraphy systems.
- Understanding the impact of SFOV systems on axillary imaging and normal variants is crucial for accurate interpretation.
- This protocol aids in assessing axillary lymph node status, complementing breast lesion detection.
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