干旱区生态环境知识资源中心(Arid): Vertical open-bore MRI scanners generate significantly less radiofrequency heating around implanted leads: A study of deep brain stimulation implants in 1.2T OASIS scanners versus 1.5T horizontal systems

Arid

DOI	10.1002/mrm.28818
	Vertical open-bore MRI scanners generate significantly less radiofrequency heating around implanted leads: A study of deep brain stimulation implants in 1.2T OASIS scanners versus 1.5T horizontal systems
	Kazemivalipour, Ehsan; Bhusal, Bhumi; Vu, Jasmine; Lin, Stella; Nguyen, Bach Thanh; Kirsch, John; Nowac, Elizabeth; Pilitsis, Julie; Rosenow, Joshua; Atalar, Ergin; Golestanirad, Laleh
通讯作者	Golestanirad, L (corresponding author), Northwestern Univ, Feinberg Sch Med, Dept Radiol, 737 N Michigan Ave,Suite 1600, Chicago, IL 60611 USA.
来源期刊	MAGNETIC RESONANCE IN MEDICINE
ISSN	0740-3194
EISSN	1522-2594
出版年	2021-05
英文摘要	Purpose Patients with active implants such as deep brain stimulation (DBS) devices are often denied access to MRI due to safety concerns associated with the radiofrequency (RF) heating of their electrodes. The majority of studies on RF heating of conductive implants have been performed in horizontal close-bore MRI scanners. Vertical MRI scanners which have a 90 degrees rotated transmit coil generate fundamentally different electric and magnetic field distributions, yet very little is known about RF heating of implants in this class of scanners. We performed numerical simulations as well as phantom experiments to compare RF heating of DBS implants in a 1.2T vertical scanner (OASIS, Hitachi) compared to a 1.5T horizontal scanner (Aera, Siemens). Methods Simulations were performed on 90 lead models created from post-operative CT images of patients with DBS implants. Experiments were performed with wires and commercial DBS devices implanted in an anthropomorphic phantom. Results We found significant reduction of 0.1 g-averaged specific absorption rate (30-fold, P < 1 x 10(-5)) and RF heating (9-fold, P < .026) in the 1.2T vertical scanner compared to the 1.5T conventional scanner. Conclusion Vertical MRI scanners appear to generate lower RF heating around DBS leads, providing potentially heightened safety or the flexibility to use sequences with higher power levels than on conventional systems.
英文关键词	deep brain stimulation finite element method medical implants MR‐ guided neurosurgery MRI safety open‐ bore vertical MRI RF heating
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000648014900001
WOS关键词	HIGH-PASS BIRDCAGE ; SUBTHALAMIC NUCLEUS ; SAR CALCULATIONS ; ABSORPTION RATE ; HUMAN HEAD ; FIELD ; PACEMAKER ; SAFETY ; LANDMARK ; IMPACT
WOS类目	Radiology, Nuclear Medicine & Medical Imaging
WOS研究方向	Radiology, Nuclear Medicine & Medical Imaging
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352380
作者单位	[Kazemivalipour, Ehsan; Bhusal, Bhumi; Vu, Jasmine; Lin, Stella; Nguyen, Bach Thanh; Golestanirad, Laleh] Northwestern Univ, Feinberg Sch Med, Dept Radiol, 737 N Michigan Ave,Suite 1600, Chicago, IL 60611 USA; [Kazemivalipour, Ehsan; Atalar, Ergin] Bilkent Univ, Dept Elect & Elect Engn, Ankara, Turkey; [Kazemivalipour, Ehsan; Atalar, Ergin] Bilkent Univ, Natl Magnet Resonance Res Ctr UMRAM, Ankara, Turkey; [Vu, Jasmine; Golestanirad, Laleh] Northwestern Univ, Dept Biomed Engn, McCormick Sch Engn, Evanston, IL 60208 USA; [Kirsch, John] Massachusetts Gen Hosp, AA Martinos Ctr Biomed Imaging, Boston, MA 02114 USA; [Nowac, Elizabeth] Albany Med Ctr, Dept Neurosurg, Albany, NY USA; [Pilitsis, Julie] Illinois Bone & Joint Inst IBJI, Wilmette, IL USA; [Rosenow, Joshua] Northwestern Univ, Feinberg Sch Med, Dept Neurol Surg, Chicago, IL 60611 USA
推荐引用方式 GB/T 7714	Kazemivalipour, Ehsan,Bhusal, Bhumi,Vu, Jasmine,et al. Vertical open-bore MRI scanners generate significantly less radiofrequency heating around implanted leads: A study of deep brain stimulation implants in 1.2T OASIS scanners versus 1.5T horizontal systems[J],2021.
APA	Kazemivalipour, Ehsan.,Bhusal, Bhumi.,Vu, Jasmine.,Lin, Stella.,Nguyen, Bach Thanh.,...&Golestanirad, Laleh.(2021).Vertical open-bore MRI scanners generate significantly less radiofrequency heating around implanted leads: A study of deep brain stimulation implants in 1.2T OASIS scanners versus 1.5T horizontal systems.MAGNETIC RESONANCE IN MEDICINE.
MLA	Kazemivalipour, Ehsan,et al."Vertical open-bore MRI scanners generate significantly less radiofrequency heating around implanted leads: A study of deep brain stimulation implants in 1.2T OASIS scanners versus 1.5T horizontal systems".MAGNETIC RESONANCE IN MEDICINE (2021).