Abstract
State-of-the-art screening mammography allows the detection of nonpalpable breast lesions in approximately 30 % of patients. The presence of clustered microcalcifications without evidence of solid tumors usually requires further investigations, mainly biopsy. A 1.5-T magnet with a single breast coil was used to evaluate 32 patients with indeterminate mammography suggestive of microcalcifications prior to surgery. Both spin-echo (SE) and gradient-echo (GE; 2D fast low-angle short [FLASH]) techniques were utilized before and after injection of 0.2 mmol/kg Gd-DTPA. Upon surgery tumor diameters ranged between 3 and 10 mm. Use of MRI demonstrated 87.5 % overall accuracy, 83.3 % sensitivity, and 92.9 % specificity. False-negative MRI results were in situ carcinomas less than 5 mm in size. All the correctly diagnosed carcinomas measured between 5 and 10 mm. Partial volume is probably the greatest limit of this technique and lesions equal to or smaller than 5 mm are only rarely detected. The GE and SE sequences demonstrated comparable results.
Original language | English |
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Pages (from-to) | 417-422 |
Number of pages | 6 |
Journal | European Radiology |
Volume | 5 |
Issue number | 4 |
DOIs | |
Publication status | Published - Aug 1995 |
Keywords
- Breast neoplasms, diagnosis
- Breast neoplasms, MR studies
- MRI, Gd-DTPA
- MRI, technology
ASJC Scopus subject areas
- Radiological and Ultrasound Technology
- Radiology Nuclear Medicine and imaging