Magnetic Resonance Imaging of In Situ Mammary Prostheses

Drake, David B.; Miller, L R; Janus, Cynthia; DeLange, E. E.; Morgan, Raymond F.

doi:10.1097/00000637-199409000-00005

Cited by 6 publications

(2 citation statements)

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“…A small pilot study prior to the first MRI revealed a sensitivity of 86% and a specificity of 100% for rupture diagnosis, 4 which is in good accordance with other studies in this area. 20,[23][24][25][26] Because we deliberately decided to have a high specificity rather than a high sensitivity in this study, some ruptures may have been overlooked. We know from surgical reports on explantations among study participants that there were virtually no false-positive results (1 falsepositive rupture in 60 women who underwent surgery either after the first or second MRI).…”

Section: Commentmentioning

confidence: 99%

Incidence of Silicone Breast Implant Rupture

Hölmich

Friis²,

Fryzek³

et al. 2003

Arch Surg

146

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The incidence of silicone breast implant rupture varies with implantation time and type of implant.Objective: To measure the incidence of implant rupture by repeated magnetic resonance imaging (MRI) among women with silicone breast implants.Design, Setting, and Participants: In 1999, 271 women who had received breast implants at least 3 years before, and who were randomly chosen from a larger cohort of women with cosmetic breast implants, underwent a baseline MRI. A second MRI was performed in 2001; 317 silicone implants (in 186 women) that were intact at the baseline MRI (n=280) or were intact at baseline but removed before the second MRI (n = 37) were included in the rupture incidence analyses.Main Outcome Measures: Implants were diagnosed with definite or possible rupture. Crude and implant age-adjusted incidence rates were calculated, and implant survival was estimated based on the observed rupture rates.Results: We found 33 definite ruptures (10%) and 23 possible ruptures (7%) during the 2-year period. The overall rupture incidence rate for definite ruptures was 5.3 ruptures/100 implants per year (95% confidence interval, 4.0-7.0). The rupture rate increased significantly with increasing implant age. Double-lumen implants were associated with substantially lower rupture risk than singlelumen implants. For modern implants intact 3 years after implantation, we estimated rupture-free survival of 98% at 5 years and 83% to 85% at 10 years. Conclusions:The risk of implant rupture increases with implant age. A minimum of 15% of modern implants can be expected to rupture between the third and tenth year after implantation.

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Section: Commentmentioning

confidence: 99%

Incidence of Silicone Breast Implant Rupture

Hölmich

Friis²,

Fryzek³

et al. 2003

Arch Surg

146

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“…Implants used for breast reconstruction are either silicone or saline, with some variants such as stacked implants, which are rarely performed, or double-lumen implants which are no longer available in the United States [24, 25]. A subpectoral location is recommended to decrease the risk of scar contracture around the implant.…”

Section: Reconstruction With Implants and Associated Complicationsmentioning

confidence: 99%

Multimodality Imaging of the Reconstructed Breast

Adrada

Whitman

Crosby

et al. 2015

Current Problems in Diagnostic Radiology

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OBJECTIVE The purpose of this article is to illustrate the imaging characteristics and pathologic findings associated with various types of breast reconstruction in women who have undergone mastectomy to treat breast cancer. CONCLUSION As the use of breast reconstruction becomes more prevalent, it is imperative that radiologists interpreting imaging studies identify spectrum of normal and abnormal imaging findings associated with differing breast reconstruction techniques, recognize imaging manifestation of expected complications and reliably distinguish these from malignancy.

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Spontaneous Autoinflation of Saline-Filled Mammary Implants: Postoperative Volume Determination by Magnetic Resonance Imaging

Tuncali

Özgür

1999

Aesth. Plast. Surg.

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Autoinflation of saline-filled mammary implants has recently been reported in the literature. Except for a few controversial hypotheses, the cause of autoinflation has not been clarified. The need to remove implants for accurate measurement of fill volume has been a deterrent to studies of autoinflation. To measure in situ volumes of saline-filled mammary implants, a noninvasive technique using magnetic resonance imaging (MRI) was developed. Measurements were performed manually on every MRI slice by tracing the outline of the implant with a hand-driven cursor. The accuracy of this MRI technique was assessed by measurements of tissue expanders containing known volumes of saline. To evaluate for autoinflation in mammary implants, a prospective clinical study to compare initial fill volumes of saline-filled mammary implants with 3- and 18-month postoperative volumes, calculated from magnetic resonance imaging (MRI) studies, was designed. A total of 12 patients (23 breast implants) implanted between 1994 and 1996 was included in the study. Volume data were compared by statistical analysis. MRI-determined volumes 3 months postoperatively were significantly larger than reported initial fill volumes, indicating that most saline-filled mammary implants included in the study autoinflated to some extent. Comparison of MRI-determined volumes 3 and 18 months postoperatively revealed no significant differences, indicating that saline-filled mammary implants remain stable and inflated between 3 and 18 months postoperatively. As a result of this study we believe that autoinflation of saline-filled mammary implants occurs more frequently than previously thought.

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Magnetic Resonance Imaging of In Situ Mammary Prostheses

Cited by 6 publications

References 0 publications

Incidence of Silicone Breast Implant Rupture

Incidence of Silicone Breast Implant Rupture

Multimodality Imaging of the Reconstructed Breast

Spontaneous Autoinflation of Saline-Filled Mammary Implants: Postoperative Volume Determination by Magnetic Resonance Imaging

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