Magnetic resonance safety and compatibility of tantalum markers used in proton beam therapy for intraocular tumors: A 7.0 Tesla study

Proton radiation therapy (PRT) is a standard treatment of uveal melanoma. PRT patients undergo implantation of ocular tantalum markers (OTMs) for treatment planning. Ultra‐high‐field MRI is a promising technique for 3D tumor visualization and PRT planning. This work examines MR safety and compatibility of OTMs at 7.0 Tesla.

[1]  J. Walling,et al.  An Absolute Measurement of the Susceptibility of Tantalum and other Metals , 1951 .

[2]  I. Constable,et al.  Proton irradiation of small choroidal malignant melanomas. , 1977, American journal of ophthalmology.

[3]  M Goitein,et al.  Proton Beam Irradiation: An Alternative to Enucleation for Intraocular Melanomas , 1980 .

[4]  F G Shellock,et al.  High-field-strength MR imaging and metallic biomedical implants: an ex vivo evaluation of deflection forces. , 1988, AJR. American journal of roentgenology.

[5]  J. Tsuruda,et al.  Low-artifact intravascular devices: MR imaging evaluation. , 1988, Radiology.

[6]  F. Shellock,et al.  Metallic otologic implants: in vitro assessment of ferromagnetism at 1.5 T. , 1991, AJNR. American journal of neuroradiology.

[7]  C. Shields,et al.  Optic nerve invasion of retinoblastoma. Metastatic potential and clinical risk factors , 1994, Cancer.

[8]  J. Herbertz.  Comment on the ICNIRP guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields (up to 300 GHz) , 1998, Health physics.

[9]  A. Ahlbom.  Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields (up to 300 GHz) , 1998 .

[10]  M. Mafee.  Uveal melanoma, choroidal hemangioma, and simulating lesions. Role of MR imaging. , 1998, Radiologic clinics of North America.

[11]  F G Shellock,et al.  Prosthetic heart valves: Evaluation of magnetic field interactions, heating, and artifacts at 1.5 T , 2000, Journal of magnetic resonance imaging : JMRI.

[12]  Ashwini Sharan,et al.  Neurostimulation systems for deep brain stimulation: In vitro evaluation of magnetic resonance imaging–related heating at 1.5 tesla , 2002, Journal of magnetic resonance imaging : JMRI.

[13]  A. ADoefaa,et al.  ? ? ? ? f ? ? ? ? ? , 2003 .

[14]  P. Börnert,et al.  Transmit SENSE , 2003, Magnetic resonance in medicine.

[15]  Yudong Zhu,et al.  Parallel excitation with an array of transmit coils , 2004, Magnetic resonance in medicine.

[16]  T. Wiegel,et al.  Proton Therapy of Uveal Melanomas in Berlin , 2004, Strahlentherapie und Onkologie.

[17]  J. O'Brien,et al.  SU-FF-T-332: 3D MRI-Based Tumor Delineation of Ocular Melanoma and Its Comparison with Conventional Techniques , 2005 .

[18]  J. Huttunen,et al.  Interaction of mobile phones with superficial passive metallic implants , 2005, Physics in medicine and biology.

[19]  S. Marnitz,et al.  Proton therapy of uveal melanomas: intercomparison of MRI-based and conventional treatment planning. , 2006, Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al].

[20]  Sang Joon Kim,et al.  A Mathematical Theory of Communication , 2006 .

[21]  Effect of 7.0 Tesla MRI on Upper Eyelid Implants , 2006, Ophthalmic plastic and reconstructive surgery.

[22]  S. Marnitz,et al.  Proton Therapy of Uveal Melanomas , 2006, Strahlentherapie und Onkologie.

[23]  Michael W. Raney,et al.  Evaluation of ferromagnetism and magnetic resonance imaging artifacts of the Strecker tantalum vascular stent , 1989, CardioVascular and Interventional Radiology.

[24]  G. Metzger,et al.  Local B1+ shimming for prostate imaging with transceiver arrays at 7T based on subject‐dependent transmit phase measurements , 2008, Magnetic resonance in medicine.

[25]  Demagnetization of Cochlear Implants and Temperature Changes in 3.0T MRI Environment , 2008, Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery.

[26]  E Neufeld,et al.  Measurement, simulation and uncertainty assessment of implant heating during MRI , 2009, Physics in medicine and biology.

[27]  Petra Schmalbrock,et al.  7 Tesla MR imaging of the human eye in vivo , 2009, Journal of magnetic resonance imaging : JMRI.

[28]  Frank G. Shellock,et al.  Reference Manual for Magnetic Resonance Safety, Implants, and Devices , 2009 .

[29]  Jianming Jin.  Theory and Computation of Electromagnetic Fields , 2010 .

[30]  Gabriele Eichfelder,et al.  Local specific absorption rate control for parallel transmission by virtual observation points , 2011, Magnetic resonance in medicine.

[31]  Peter Börnert,et al.  A specific absorption rate prediction concept for parallel transmission MR , 2012, Magnetic resonance in medicine.

[32]  Christoph A Amstutz,et al.  Intraoperative localization of tantalum markers for proton beam radiation of choroidal melanoma by an opto-electronic navigation system: a novel technique. , 2012, International journal of radiation oncology, biology, physics.

[33]  M. Knopp,et al.  Retrobulbar vasculature using 7-T magnetic resonance imaging with dedicated eye surface coil , 2012, Graefe's Archive for Clinical and Experimental Ophthalmology.

[34]  Ivana K. Kim,et al.  Epidemiology and management of uveal melanoma. , 2012, Hematology/oncology clinics of North America.

[35]  Andrew G Webb,et al.  Magnetic resonance compatibility of intraocular lenses measured at 7 Tesla. , 2012, Investigative ophthalmology & visual science.

[36]  E. Neufeld,et al.  IT’IS Database for Thermal and Electromagnetic Parameters of Biological Tissues , 2012 .

[37]  A. Webb,et al.  High‐resolution MRI of uveal melanoma using a microcoil phased array at 7 T , 2013, NMR in biomedicine.

[38]  Yacine Noureddine,et al.  MR safety assessment of potential RF heating from cranial fixation plates at 7 T. , 2013, Medical physics.

[39]  Dingxin Wang,et al.  Cardiac imaging at 7 tesla: Single‐ and two‐spoke radiofrequency pulse design with 16‐channel parallel excitation , 2013, Magnetic resonance in medicine.

[40]  Thoralf Niendorf,et al.  Design and Evaluation of a Hybrid Radiofrequency Applicator for Magnetic Resonance Imaging and RF Induced Hyperthermia: Electromagnetic Field Simulations up to 14.0 Tesla and Proof-of-Concept at 7.0 Tesla , 2013, PloS one.

[41]  Zhen Wang,et al.  Charged particle radiation therapy for uveal melanoma: a systematic review and meta-analysis. , 2013, International journal of radiation oncology, biology, physics.

[42]  H. Heimann,et al.  Proton beam radiotherapy of uveal melanoma. , 2013, Saudi journal of ophthalmology : official journal of the Saudi Ophthalmological Society.

[43]  C. Colosimo,et al.  Uveal melanoma: evaluation of extrascleral extension using thin-section MR of the eye with surface coils , 2014, La radiologia medica.

[44]  T. Niendorf,et al.  Ultrahigh field magnetic resonance and colour Doppler real-time fusion imaging of the orbit – a hybrid tool for assessment of choroidal melanoma , 2014, European Radiology.

[45]  N. Hosten,et al.  High spatial resolution in vivo magnetic resonance imaging of the human eye, orbit, nervus opticus and optic nerve sheath at 7.0 Tesla. , 2014, Experimental Eye Research.

[46]  Bert Jan Kooij,et al.  Assessing the MR compatibility of dental retainer wires at 7 Tesla , 2014, Magnetic resonance in medicine.

[47]  Thoralf Niendorf,et al.  Ophthalmic Magnetic Resonance Imaging at 7 T Using a 6-Channel Transceiver Radiofrequency Coil Array in Healthy Subjects and Patients With Intraocular Masses , 2014, Investigative radiology.

[48]  Thoralf Niendorf,et al.  On the RF heating of coronary stents at 7.0 Tesla MRI , 2015, Magnetic resonance in medicine.

[49]  Meritxell Bach Cuadra,et al.  Automatic Segmentation of the Eye in 3D Magnetic Resonance Imaging: A Novel Statistical Shape Model for Treatment Planning of Retinoblastoma. , 2015, International journal of radiation oncology, biology, physics.

[50]  T. Niendorf,et al.  Anatomic and pathological characterization of choroidal melanoma using multimodal imaging: what is practical, what is needed? , 2015, Melanoma research.

[51]  M. Dogrusöz,et al.  The genetic basis of uveal melanoma. , 2015, Journal francais d'ophtalmologie.

[52]  R. Heidemann,et al.  Diffusion-Sensitized Ophthalmic Magnetic Resonance Imaging Free of Geometric Distortion at 3.0 and 7.0 T: A Feasibility Study in Healthy Subjects and Patients With Intraocular Masses , 2015, Investigative radiology.

[53]  Mark Lowe,et al.  Optic Nerve Assessment Using 7-Tesla Magnetic Resonance Imaging , 2016, Ocular Oncology and Pathology.

[54]  W. Teeuwisse,et al.  Clinical evaluation of ultra-high-field MRI for three-dimensional visualisation of tumour size in uveal melanoma patients, with direct relevance to treatment planning , 2016, Magnetic Resonance Materials in Physics, Biology and Medicine.

[55]  A. Trofimov,et al.  Practice Patterns Analysis of Ocular Proton Therapy Centers: The International OPTIC Survey. , 2016, International journal of radiation oncology, biology, physics.

[56]  Thoralf Niendorf,et al.  Open Source 3D Multipurpose Measurement System with Submillimetre Fidelity and First Application in Magnetic Resonance , 2017, Scientific Reports.