Article Figures & Data
Figures
- FIGURE 1.
Imaging using high-resolution breast-specific gamma camera in mediolateral projection (A), comparable with projection obtained with mammography, and craniocaudal projection (B).
- FIGURE 2.
Imaging using γ-isolation shield in craniocaudal (A) and mediolateral oblique (B) projections to reduce image contamination from extramammary radiotracer uptake and to apply mild compression.
- FIGURE 3.
Comparative resolution of traditional gamma camera using high-resolution (HR), high-efficiency collimators and breast-specific gamma camera. y-axis = resolution (mm).
- FIGURE 4.
Detection of unsuspected cancer with high-resolution breast-specific gamma camera in 33-y-old woman 2 y after lumpectomy and radiation therapy for infiltrating ductal carcinoma of right breast. Area of architectural distortion appeared in right breast, for which scintimammography was performed. Mediolateral oblique (A) and craniocaudal (B) mammograms of left breast showed normal findings. Scintimammogram with high-resolution breast-specific gamma camera showed normal findings in right breast. However, images of left breast (C) showed focal area of radiotracer uptake in upper (arrow) outer (arrowhead) quadrant of left breast. (D) Images with conventional gamma camera showed possible minimal radiotracer uptake in superior left breast. Biopsy showed 4-mm infiltrating ductal carcinoma.
Tables
- TABLE 1
Comparison of General-Purpose Gamma Camera and High-Resolution, Breast-Specific Gamma Camera: Number of Lesions Detected
Category General-purpose camera Breast-specific camera True-positive 18 22 False-negative 10 6 True-negative 28 28 False-positive 2 2 - TABLE 2
Comparison of General-Purpose Gamma Camera and High-Resolution, Breast-Specific Gamma Camera: Sensitivity in Detecting Lesions of Various Sizes and Palpabilities
Category General-purpose camera Breast-specific camera All lesions 64% (18/28) 79% (22/28) Lesions ≤ 1 cm 47% (7/15) 67% (10/15) Nonpalpable lesions 56% (10/18) 72% (13/18) Palpable lesions 80% (8/10) 90% (9/10) Lesions > 1 cm 85% (11/13) 92% (12/13)
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