PMC6243356_01
Patient 1. The left anterior oblique view images at end diastole (a) and end systole (b) show a small round photopenic defect overlying the mid-septum. A round focus of absent counts in the region of the septum, measuring approximately 1.5 cm, was also identified on the phase (c) and amplitude (d) parametric images.
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fig1
The left anterior oblique (LAO) view images (Figure 1a,b) revealed a small round photopenic defect overlying the septum, which did not change location on the dynamic images. A round focus of absent counts in the region of the septum, measuring approximately 1.5 cm, was also identified on the phase and amplitude parametric images (Figure 1c,d).
Patient 1. A chest radiograph revealed a dense ring-like object in the region of the left breast, which was the metallic injection port of the left breast tissue expander.
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fig2
A chest radiograph revealed a dense ring-like object in the region of the left breast (Figure 2). 1 month earlier, the patient had a skin-sparing left mastectomy with immediate reconstruction.
PMC6243356_02
Patient 2. The left anterior oblique view images at end diastole (a) and end systole (b) show a small round photopenic defect overlying the upper part of the septum. There was also a semicircular focus of absent counts in the upper part of the septum extending into the left ventricle on the phase (c) and amplitude (d) parametric images.
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fig3
MAGNA-SITE integrated injection port in the tissue expander. MUGA scans performed at 2, 5 and 8 months after expander insertion showed a photopenic defect overlying the upper part of the septum (Figure 3a,b). There was also a semicircular focus of absent counts in the upper part of the septum extending into the left ventricle on the phase and amplitude parametric images (Figure 3c,d).
Patient 2. A chest radiograph revealed two dense ring-like objects in the regions of the breasts, which were the metallic injection ports of the breast tissue expanders.
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fig4
A chest radiograph revealed two dense ring-like objects in the breast regions (Figure 4), which were the tissue expander metallic injection ports.
A schematic of the patients' breast reconstruction tissue expanders, showing the shape of the tissue expander and the central location of the dense metal integrated injection port. (a) Patient 1, (b) patient 2. Reproduced from Allergan with permission from Allergan Inc.
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The tissue expander design for the two patients is shown in Figure 5 and the metallic injection port in Figure 6.
A schematic of the MAGNA-SITE  integrated injection port in the tissue expander, which contains a puncture proof titanium needle guard and a rare-earth permanent magnet, which is used in conjunction with the MAGNA-FINDER  external locating device (that also contains a rare-earth permanent magnet) for an accurate injection system. Reproduced from Allergan with permission from Allergan Inc.
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fig6
The tissue expander design for the two patients is shown in Figure 5 and the metallic injection port in Figure 6.