Contrast Enhanced Ultrasound Medical Imaging for Identifying Breast Masses

This study is comparing different imaging methods — including contrast-enhanced ultrasound (CEUS), which uses tiny gas bubbles to improve ultrasound images — against biopsy results to see how well these techniques can distinguish between cancerous and non-cancerous breast lumps. **You may be eligible if...** - You are a female 18 years or older - You have a newly found breast lump rated as suspicious (BIRADS 4a, 4b, 4c, or 5) on standard ultrasound - You have been recommended for an ultrasound-guided biopsy **You may NOT be eligible if...** - You have pulmonary hypertension or a known allergy to the ultrasound contrast agent - You are pregnant, possibly pregnant, or breastfeeding - You are currently receiving chemotherapy before surgery (neoadjuvant treatment) - Your breast lump is 1 cm or smaller - You have breast implants - The same breast has had prior cancer surgery (lumpectomy) - You have had a prior biopsy of that specific lump - You are under 30 years old (for certain imaging types) Talk to your doctor to see if this trial is right for you.