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Abstract #3456

Breast Tissue Expanders with Magnetic Ports: In Vitro Testing and Clinical Experience at 1.5-Tesla

Nanda Deepa Thimmappa1, Frank G. Shellock2, Cristen Giangarra3, Christina Y. Ahn4, Martin R. Prince1, Joshua L. Levine5

1Radiology, Weill Cornell Medical College, New York, NY, United States; 2Radiology, University of Southern California, Los Angeles, CA, United States; 3University College of Washington University, Saint Louis, MO, United States; 4NYC Breast Reconstruction Center, New York, NY, United States; 5Plastic Surgery, The Center for the Advancement of Breast Reconstruction at NYEE, New York, NY, United States

MR safety of tissue expanders with magnetic ports implanted following mastectomy for breast cancer is controversial yet these patients often require MRI/MRA examinations while the expander is present. Based on in vitro and clinical testing in 16 patients, we found these implants create substantial artifact but no migration, local heating or other damage.

Keywords

abdomen abdominal acceptable adding alert apparent artifacts assess assessment audience axial background benefit bilateral breast burning cancer caused clinical college commonly complete conditions constant contain controlled coronal damage deflection degrees diagnosis diagnostic dislodgement downward empty enhanced examinations expanded expander expanders expanding experience experiences exposed fast feel field findings frank furthermore gadolinium gradient gradually healing heating height helps implant implantation implants indicated infusion injection interactions internal investigation involves issues magnet major many mastectomy medium mending mentor migration minor minute minutes months muscle noted officers outweighs pain patient patients pelvis permanent phantom placed plan plastic pocket port ports post preliminary prince programmable prosthesis radiologist radiologists radiology reconstruction referring related reminder removal removed reported request requested resolution retinal risk safely safety saint saline several shunt sign since site skin southern spoiled subcutaneous substantial supplying surgeons surgery surgical surrounding system takes target tissue tissues torque treatment undergoing underwent unsafe valve vessels visible vitro watts whole