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Assessment of MRI Issues at 3 Tesla for a New Metallic Tissue Marker.

Cronenweth CM, Shellock FG - Int J Breast Cancer (2015)

Bottom Line: Results.Conclusions.Based on the findings, the new metallic tissue marker is acceptable or "MR Conditional" (using current labeling terminology) for a patient undergoing an MRI procedure at 3 Tesla or less.

View Article: PubMed Central - PubMed

Affiliation: Loyola Marymount University, 1 LMU Drive, Los Angeles, CA 90045, USA.

ABSTRACT
Purpose. To assess the MRI issues at 3 Tesla for a metallic tissue marker used to localize removal areas of tissue abnormalities. Materials and Methods. A newly designed, metallic tissue marker (Achieve Marker, CareFusion, Vernon Hills, IL) used to mark biopsy sites, particularly in breasts, was assessed for MRI issues which included standardized tests to determine magnetic field interactions (i.e., translational attraction and torque), MRI-related heating, and artifacts at 3 Tesla. Temperature changes were determined for the marker using a gelled-saline-filled phantom. MRI was performed at a relatively high specific absorption rate (whole body averaged SAR, 2.9-W/kg). MRI artifacts were evaluated using T1-weighted, spin echo and gradient echo pulse sequences. Results. The marker displayed minimal magnetic field interactions (2-degree deflection angle and no torque). MRI-related heating was only 0.1°C above background heating (i.e., the heating without the tissue marker present). Artifacts seen as localized signal loss were relatively small in relation to the size and shape of the marker. Conclusions. Based on the findings, the new metallic tissue marker is acceptable or "MR Conditional" (using current labeling terminology) for a patient undergoing an MRI procedure at 3 Tesla or less.

No MeSH data available.


Related in: MedlinePlus

The metallic tissue marker (Achieve Marker, 3-mm length, CareFusion, Vernon Hills, IL) that underwent testing for MRI issues at 3 Tesla. Note the irregular surface, allowing for growth of tissue in and around this implant to reduce migration once it is deployed.
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fig1: The metallic tissue marker (Achieve Marker, 3-mm length, CareFusion, Vernon Hills, IL) that underwent testing for MRI issues at 3 Tesla. Note the irregular surface, allowing for growth of tissue in and around this implant to reduce migration once it is deployed.

Mentions: A newly developed, metallic tissue marker (Achieve Marker, 3-mm length; 12-gauge, 99.9% gold material, CareFusion, Vernon Hills, IL) (Figure 1) was selected for assessment of MRI issues at 3 Tesla. The features of this marker include that it is the same size as the biopsy that is obtained and has a configuration (i.e., an irregular surface allowing for growth of tissue around it) that is specially designed to prevent migration once it is deployed in tissue. The marker is supplied in a delivery device that approximates the same size of the biopsy device (Achieve Biopsy Device, CareFusion, Vernon Hills, IL), thus, permitting precise placement.


Assessment of MRI Issues at 3 Tesla for a New Metallic Tissue Marker.

Cronenweth CM, Shellock FG - Int J Breast Cancer (2015)

The metallic tissue marker (Achieve Marker, 3-mm length, CareFusion, Vernon Hills, IL) that underwent testing for MRI issues at 3 Tesla. Note the irregular surface, allowing for growth of tissue in and around this implant to reduce migration once it is deployed.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4525757&req=5

fig1: The metallic tissue marker (Achieve Marker, 3-mm length, CareFusion, Vernon Hills, IL) that underwent testing for MRI issues at 3 Tesla. Note the irregular surface, allowing for growth of tissue in and around this implant to reduce migration once it is deployed.
Mentions: A newly developed, metallic tissue marker (Achieve Marker, 3-mm length; 12-gauge, 99.9% gold material, CareFusion, Vernon Hills, IL) (Figure 1) was selected for assessment of MRI issues at 3 Tesla. The features of this marker include that it is the same size as the biopsy that is obtained and has a configuration (i.e., an irregular surface allowing for growth of tissue around it) that is specially designed to prevent migration once it is deployed in tissue. The marker is supplied in a delivery device that approximates the same size of the biopsy device (Achieve Biopsy Device, CareFusion, Vernon Hills, IL), thus, permitting precise placement.

Bottom Line: Results.Conclusions.Based on the findings, the new metallic tissue marker is acceptable or "MR Conditional" (using current labeling terminology) for a patient undergoing an MRI procedure at 3 Tesla or less.

View Article: PubMed Central - PubMed

Affiliation: Loyola Marymount University, 1 LMU Drive, Los Angeles, CA 90045, USA.

ABSTRACT
Purpose. To assess the MRI issues at 3 Tesla for a metallic tissue marker used to localize removal areas of tissue abnormalities. Materials and Methods. A newly designed, metallic tissue marker (Achieve Marker, CareFusion, Vernon Hills, IL) used to mark biopsy sites, particularly in breasts, was assessed for MRI issues which included standardized tests to determine magnetic field interactions (i.e., translational attraction and torque), MRI-related heating, and artifacts at 3 Tesla. Temperature changes were determined for the marker using a gelled-saline-filled phantom. MRI was performed at a relatively high specific absorption rate (whole body averaged SAR, 2.9-W/kg). MRI artifacts were evaluated using T1-weighted, spin echo and gradient echo pulse sequences. Results. The marker displayed minimal magnetic field interactions (2-degree deflection angle and no torque). MRI-related heating was only 0.1°C above background heating (i.e., the heating without the tissue marker present). Artifacts seen as localized signal loss were relatively small in relation to the size and shape of the marker. Conclusions. Based on the findings, the new metallic tissue marker is acceptable or "MR Conditional" (using current labeling terminology) for a patient undergoing an MRI procedure at 3 Tesla or less.

No MeSH data available.


Related in: MedlinePlus