Abstract：Objective To investigate the security of thermal effects in MR (Magnetic Resonance) imaging of metal implants (titanium alloy and stainless steel). Methods The metal implant specimen was made to perform the heat production experiment with 1.5T MR imaging and record the relevant data. And 40 patients with metal implants were scanned by MRI to record relevant monitoring data. Results The temperature of local tissues surrounding the implants in the experimental specimen increased before and after MR examinations. The average increasing temperature in Titanium Alloy Group and Stainless Steel Group were (0.45±0.02) ℃ (t=13, P<0.01) and (0.75±0.04) ℃ (t=19.4, P<0.01). The metal implant was able to produce heat under the radio-frequency waves of MR imaging. Metal implants in Stainless Steel Group produced more heat than those in Titanium Alloy Group (P<0.01). Conclusion The experiment indicated that the implants could produce heat under the radio-frequency waves of MR imaging and the increasing temperature of the tissues surrounding the implant in the experimental specimen was less than 1.0 ℃.
王传兵，张玲，李大鹏. 金属植入物对1.5T磁共振扫描热效应的安全性影响[J]. 中国医疗设备, 2015, 30(8): 27-29.
WANG Chuan-bing,ZHANG Ling, LI Da-peng. Influence of the Security of Thermal Effects in 1.5T MR Imaging of Metal Implants. China Medical Devices, 2015, 30(8): 27-29.
ASTM F2182-11a.Standard test method for measurement of radio frequency induced heating near passive implants during magnetic resonance imaging[S].West Conshohocken,PA:ASTM International,2011.
[2]
ASTM F2182-11a.Standard test method for measurement of radio frequency induced heating near passive implants during magnetic resonance imaging[S].West Conshohocken,PA:ASTM International,2011.
ASTM F2213-06A.Standard test method for measurement of magnetically induced torque on medical devices in the magnetic resonance environment[S].West Conshohocken,PA:ASTM International,2006.
[3]
ASTM F2503-05.Standard practice for marking medical devices and other items for safety in the magnetic resonance environment[S].West Conshohocken,PA:ASTM International,2005.
[13]
Craven I,Griffiths PD,Hoggard N.Magnetic resonance imaging of epilepsy at 3 Tesla[J].Clin Radiol,2011,66(3):278-286.
[13]
Craven I,Griffiths PD,Hoggard N.Magnetic resonance imaging of epilepsy at 3 Tesla[J].Clin Radiol,2011,66(3):278-286.
[13]
Craven I,Griffiths PD,Hoggard N.Magnetic resonance imaging of epilepsy at 3 Tesla[J].Clin Radiol,2011,66(3):278-286.
[14]
Yang CW,Liu L,Wang J,et al.Magnetic resonance imaging of artificial lumbar disks:safety and metal artifacts[J].Chin Med J(Engl),2009,122(8):911-916.
[14]
Yang CW,Liu L,Wang J,et al.Magnetic resonance imaging of artificial lumbar disks:safety and metal artifacts[J].Chin Med J(Engl),2009,122(8):911-916.
[2]
ASTM F2182-11a.Standard test method for measurement of radio frequency induced heating near passive implants during magnetic resonance imaging[S].West Conshohocken,PA:ASTM International,2011.
[3]
ASTM F2503-05.Standard practice for marking medical devices and other items for safety in the magnetic resonance environment[S].West Conshohocken,PA:ASTM International,2005.
[3]
ASTM F2503-05.Standard practice for marking medical devices and other items for safety in the magnetic resonance environment[S].West Conshohocken,PA:ASTM International,2005.
[1]
ASTM F2213-06A.Standard test method for measurement of magnetically induced torque on medical devices in the magnetic resonance environment[S].West Conshohocken,PA:ASTM International,2006.
[1]
ASTM F2213-06A.Standard test method for measurement of magnetically induced torque on medical devices in the magnetic resonance environment[S].West Conshohocken,PA:ASTM International,2006.
[11]
Fritz J,Lurie B,Miller TT.Imaging of hip arthroplasty[J].Semin Musculoskelet Radiol,2013,17(3):316-327.
[4]
Kido A,Togashi K,Kataoka ML,et al.Intrauterine devices and uterine peristalsis:evaluation with MRI[J].Magn Reson Imaging,2008,26(1):54-58.
[4]
Kido A,Togashi K,Kataoka ML,et al.Intrauterine devices and uterine peristalsis:evaluation with MRI[J].Magn Reson Imaging,2008,26(1):54-58.
[4]
Kido A,Togashi K,Kataoka ML,et al.Intrauterine devices and uterine peristalsis:evaluation with MRI[J].Magn Reson Imaging,2008,26(1):54-58.
[6]
Baker KB,Tkach JA,Nyenhuis JA,et al.Evaluation of specific absorption rate as a dosimeter of MRI related implant heating[J].J Magn Reson Imaging,2004,20(2):315-320.
[6]
Baker KB,Tkach JA,Nyenhuis JA,et al.Evaluation of specific absorption rate as a dosimeter of MRI related implant heating[J].J Magn Reson Imaging,2004,20(2):315-320.
[6]
Baker KB,Tkach JA,Nyenhuis JA,et al.Evaluation of specific absorption rate as a dosimeter of MRI related implant heating[J].J Magn Reson Imaging,2004,20(2):315-320.
[9]
Walsh EG,Brott BC,Johnson VY,et al.Assessment of passive cardiovascular implant devices for MRI compatibility[J].Technol Health Care,2008,16(4):233-245.
[9]
Walsh EG,Brott BC,Johnson VY,et al.Assessment of passive cardiovascular implant devices for MRI compatibility[J].Technol Health Care,2008,16(4):233-245.
[9]
Walsh EG,Brott BC,Johnson VY,et al.Assessment of passive cardiovascular implant devices for MRI compatibility[J].Technol Health Care,2008,16(4):233-245.
[10]
Berger-Kulemann V,Einspieler H,Hachemian N,et al.Magnetic field interactions of copper-containing intrauterine devices in 3.0-Tesla magnetic resonance imaging:in vivo study[J].Korean J Radiol,2013,14(3):416-422.
[10]
Berger-Kulemann V,Einspieler H,Hachemian N,et al.Magnetic field interactions of copper-containing intrauterine devices in 3.0-Tesla magnetic resonance imaging:in vivo study[J].Korean J Radiol,2013,14(3):416-422.
[10]
Berger-Kulemann V,Einspieler H,Hachemian N,et al.Magnetic field interactions of copper-containing intrauterine devices in 3.0-Tesla magnetic resonance imaging:in vivo study[J].Korean J Radiol,2013,14(3):416-422.
[11]
Fritz J,Lurie B,Miller TT.Imaging of hip arthroplasty[J].Semin Musculoskelet Radiol,2013,17(3):316-327.
[14]
Yang CW,Liu L,Wang J,et al.Magnetic resonance imaging of artificial lumbar disks:safety and metal artifacts[J].Chin Med J(Engl),2009,122(8):911-916.
