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After over a year no subjects were identified
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The purpose of the study is to improve image quality, increase speed of scanning and to see how well certain products test by scanning people who have an orthopedic hip or knee metallic implant.
The technology comprising Magnetic Resonance (MR) imaging systems and accessories is under continuous development in order to improve the quality of images, speed of acquisition, and usability of MR devices applied to image subjects with metallic orthopedic implants. Collection of in vivo human data throughout the product development and maintenance lifecycle plays an important role in enabling the technology to be investigated, optimized, and validated.
This is a pre-market investigation involving commercially available devices, investigational devices, and commercial devices modified with investigational components. The Study will be conducted for three years, over which time a number of endpoints will be collected for various devices under development.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| orthopedic implants, no treatment |
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| Measure | Description | Time Frame |
|---|---|---|
| Image quality of images that are obtained from scanning subjects who have metallic MR Safe or MR Conditional implants, will be evaluated on a pass/fail basis. | Review of real-time and post-acquisition technical assessment will occur. The assessment of images will be made by scientists, engineers and radiology technologists. Validation activities will consist of a comparison of the observed images with the prospective acceptance criteria to determine if each specific test results in a pass or fail. There are no statistical tests and no efficacy endpoints. | Within the first hour after scanning |
| Measure | Description | Time Frame |
|---|---|---|
| The ease of use and optimization of the MR device in imaging of subjects with metallic implants will be assessed. | Software programs, data processing software and other types of MR system accessory hardware and software components will be tested and evaluated for how easy and problem-free they are to use and optimize for imaging of subjects with a metallic implant. Once this is established, validation of user requirements and specifications will be performed in accordance with Good Manufacturing Practice (GMP) design control requirements. |
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Inclusion Criteria:
Exclusion Criteria:
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Community sample from Waukesha, Wisconsin area.
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| Name | Affiliation | Role |
|---|---|---|
| Troy Lewein | American Registry of Radiologic Technologists | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| GE Healthcare | Waukesha | Wisconsin | 53188 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| Background | Nyenhuis, J. A., Kildishev, A. V., Athey, T. W., Bourland, J. D., Foster, K. S., Graber, G. P., "Heating Near Implanted Medical Devices by the MRI RF-magnetic Field," IEEE Trans. Magn., Vol 35, 1999, pp. 4133-4135 | ||
| 15342757 | Background | Potter HG, Nestor BJ, Sofka CM, Ho ST, Peters LE, Salvati EA. Magnetic resonance imaging after total hip arthroplasty: evaluation of periprosthetic soft tissue. J Bone Joint Surg Am. 2004 Sep;86(9):1947-54. doi: 10.2106/00004623-200409000-00013. | |
| 21862766 |
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| Within one hour of scanning |
| Background |
| Hayter CL, Koff MF, Shah P, Koch KM, Miller TT, Potter HG. MRI after arthroplasty: comparison of MAVRIC and conventional fast spin-echo techniques. AJR Am J Roentgenol. 2011 Sep;197(3):W405-11. doi: 10.2214/AJR.11.6659. |
| 14711959 | Background | Cook SM, Pellicci PM, Potter HG. Use of magnetic resonance imaging in the diagnosis of an occult fracture of the femoral component after total hip arthroplasty. A case report. J Bone Joint Surg Am. 2004 Jan;86(1):149-53. doi: 10.2106/00004623-200401000-00024. No abstract available. |
| 11917273 | Background | Sofka CM, Potter HG. MR imaging of joint arthroplasty. Semin Musculoskelet Radiol. 2002 Mar;6(1):79-85. doi: 10.1055/s-2002-23166. |
| 9798849 | Background | Suh JS, Jeong EK, Shin KH, Cho JH, Na JB, Kim DH, Han CD. Minimizing artifacts caused by metallic implants at MR imaging: experimental and clinical studies. AJR Am J Roentgenol. 1998 Nov;171(5):1207-13. doi: 10.2214/ajr.171.5.9798849. |
| 10616816 | Background | Henk CB, Brodner W, Grampp S, Breitenseher M, Thurnher M, Mostbeck GH, Imhof H. The postoperative spine. Top Magn Reson Imaging. 1999 Aug;10(4):247-64. doi: 10.1097/00002142-199908000-00006. |
| 22499278 | Background | Hayter CL, Koff MF, Potter HG. Magnetic resonance imaging of the postoperative hip. J Magn Reson Imaging. 2012 May;35(5):1013-25. doi: 10.1002/jmri.23523. |
| 19165901 | Background | Koch KM, Lorbiecki JE, Hinks RS, King KF. A multispectral three-dimensional acquisition technique for imaging near metal implants. Magn Reson Med. 2009 Feb;61(2):381-90. doi: 10.1002/mrm.21856. |
| 20981709 | Background | Koch KM, Brau AC, Chen W, Gold GE, Hargreaves BA, Koff M, McKinnon GC, Potter HG, King KF. Imaging near metal with a MAVRIC-SEMAC hybrid. Magn Reson Med. 2011 Jan;65(1):71-82. doi: 10.1002/mrm.22523. |
| 20882607 | Background | Koch KM, Hargreaves BA, Pauly KB, Chen W, Gold GE, King KF. Magnetic resonance imaging near metal implants. J Magn Reson Imaging. 2010 Oct;32(4):773-87. doi: 10.1002/jmri.22313. |
| 16846767 | Background | Potter HG, Foo LF. Magnetic resonance imaging of joint arthroplasty. Orthop Clin North Am. 2006 Jul;37(3):361-73, vi-vii. doi: 10.1016/j.ocl.2006.03.003. |
| 16056041 | Background | Walde TA, Weiland DE, Leung SB, Kitamura N, Sychterz CJ, Engh CA Jr, Claus AM, Potter HG, Engh CA Sr. Comparison of CT, MRI, and radiographs in assessing pelvic osteolysis: a cadaveric study. Clin Orthop Relat Res. 2005 Aug;(437):138-44. doi: 10.1097/01.blo.0000164028.14504.46. |
| 16022981 | Background | Weiland DE, Walde TA, Leung SB, Sychterz CJ, Ho S, Engh CA, Potter HG. Magnetic resonance imaging in the evaluation of periprosthetic acetabular osteolysis: a cadaveric study. J Orthop Res. 2005 Jul;23(4):713-9. doi: 10.1016/j.orthres.2005.02.007. Epub 2005 Apr 12. |
| 21435495 | Background | Hayter CL, Potter HG, Su EP. Imaging of metal-on-metal hip resurfacing. Orthop Clin North Am. 2011 Apr;42(2):195-205, viii. doi: 10.1016/j.ocl.2010.12.006. |
| Background | Hayter CL, Potter HG, Padgett DE, Perino G, Nestor BJ. MRI assessment of wear-induced synovitis. ISMRM Annual Conference, paper presentation. Montreal; 2011. |
| 20458645 | Background | Campbell P, Ebramzadeh E, Nelson S, Takamura K, De Smet K, Amstutz HC. Histological features of pseudotumor-like tissues from metal-on-metal hips. Clin Orthop Relat Res. 2010 Sep;468(9):2321-7. doi: 10.1007/s11999-010-1372-y. |
| 18591590 | Background | Pandit H, Glyn-Jones S, McLardy-Smith P, Gundle R, Whitwell D, Gibbons CL, Ostlere S, Athanasou N, Gill HS, Murray DW. Pseudotumours associated with metal-on-metal hip resurfacings. J Bone Joint Surg Br. 2008 Jul;90(7):847-51. doi: 10.1302/0301-620X.90B7.20213. |
| 18068790 | Background | Toms AP, Marshall TJ, Cahir J, Darrah C, Nolan J, Donell ST, Barker T, Tucker JK. MRI of early symptomatic metal-on-metal total hip arthroplasty: a retrospective review of radiological findings in 20 hips. Clin Radiol. 2008 Jan;63(1):49-58. doi: 10.1016/j.crad.2007.07.012. Epub 2007 Oct 24. |