Carbon fiber-reinforced PEEK versus titanium implants: an in vitro comparison of susceptibility artifacts in CT and MR imaging.
Carbon fiber–reinforced PEEK
Imaging
Pedicle screws
Spine surgery
Susceptibility artifacts
Titanium
Journal
Neurosurgical review
ISSN: 1437-2320
Titre abrégé: Neurosurg Rev
Pays: Germany
ID NLM: 7908181
Informations de publication
Date de publication:
Aug 2021
Aug 2021
Historique:
received:
17
05
2020
accepted:
01
09
2020
revised:
03
08
2020
pubmed:
16
9
2020
medline:
7
10
2021
entrez:
15
9
2020
Statut:
ppublish
Résumé
Artifacts in computed tomography (CT) and magnetic resonance imaging (MRI) due to titanium implants in spine surgery are known to cause difficulties in follow-up imaging, radiation planning, and precise dose delivery in patients with spinal tumors. Carbon fiber-reinforced polyetheretherketon (CFRP) implants aim to reduce these artifacts. Our aim was to analyze susceptibility artifacts of these implants using a standardized in vitro model. Titanium and CFRP screw-rod phantoms were embedded in 3% agarose gel. Phantoms were scanned with Siemens Somatom AS Open and 3.0-T Siemens Skyra scanners. Regions of interest (ROIs) were plotted and analyzed for CT and MRI at clinically relevant localizations. CT voxel-based imaging analysis showed a significant difference of artifact intensity and central overlay between titanium and CFRP phantoms. For the virtual regions of the spinal canal, titanium implants (ti) presented - 30.7 HU vs. 33.4 HU mean for CFRP (p < 0.001), at the posterior margin of the vertebral body 68.9 HU (ti) vs. 59.8 HU (CFRP) (p < 0.001) and at the anterior part of the vertebral body 201.2 HU (ti) vs. 70.4 HU (CFRP) (p < 0.001), respectively. MRI data was only visually interpreted due to the low sample size and lack of an objective measuring system as Hounsfield units in CT. CT imaging of the phantom with typical implant configuration for thoracic stabilization could demonstrate a significant artifact reduction in CFRP implants compared with titanium implants for evaluation of index structures. Radiolucency with less artifacts provides a better interpretation of follow-up imaging, radiation planning, and more precise dose delivery.
Identifiants
pubmed: 32930911
doi: 10.1007/s10143-020-01384-2
pii: 10.1007/s10143-020-01384-2
pmc: PMC8338834
doi:
Substances chimiques
Benzophenones
0
Carbon Fiber
0
Polymers
0
polyetheretherketone
31694-16-3
Titanium
D1JT611TNE
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
2163-2170Informations de copyright
© 2020. The Author(s).
Références
J Neurosurg Spine. 2010 Jul;13(1):94-108
pubmed: 20594024
Eur Spine J. 2018 Apr;27(4):874-881
pubmed: 28815357
AJNR Am J Neuroradiol. 2005 Sep;26(8):2057-66
pubmed: 16155160
Spine (Phila Pa 1976). 2009 Oct 15;34(22 Suppl):S101-7
pubmed: 19829269
Med Phys. 2001 Apr;28(4):701-3
pubmed: 11339768
J Mech Behav Biomed Mater. 2018 Jan;77:600-608
pubmed: 29096126
Spine J. 2004 Nov-Dec;4(6):681-8
pubmed: 15541703
Spine (Phila Pa 1976). 2017 Jan 1;42(1):E1-E7
pubmed: 27196026
J Biomech Eng. 2011 Aug;133(8):081009
pubmed: 21950902
World Neurosurg. 2017 Sep;105:294-301
pubmed: 28478252
J Appl Clin Med Phys. 2017 Mar;18(2):62-68
pubmed: 28300369
Oncologist. 2013 Jun;18(6):744-51
pubmed: 23709750
Spine (Phila Pa 1976). 1994 Jul 1;19(13):1436-44
pubmed: 7939971
J Bone Joint Surg Br. 1992 Jan;74(1):88-92
pubmed: 1732273
J Biomed Mater Res B Appl Biomater. 2013 May;101(4):591-8
pubmed: 23281249
J Neurosurg Spine. 2010 Dec;13(6):766-72
pubmed: 21121756
Spine J. 2009 Mar;9(3):263-7
pubmed: 18838341
J Neurosurg Sci. 2017 Apr;61(2):222-224
pubmed: 26868268
Clin Spine Surg. 2016 Aug;29(7):E371-5
pubmed: 23075859
Phys Med Biol. 2006 May 7;51(9):N173-7
pubmed: 16625027
Nat Methods. 2012 Jun 28;9(7):676-82
pubmed: 22743772
J Neurosurg Spine. 2013 Mar;18(3):207-14
pubmed: 23339593
Eur Spine J. 2018 Aug;27(8):1775-1784
pubmed: 29497852
Radiographics. 2004 Nov-Dec;24(6):1679-91
pubmed: 15537976
Orthopedics. 2002 Jan;25(1):37-42
pubmed: 11811240
Int J Radiat Oncol Biol Phys. 2011 Nov 15;81(4):e489-96
pubmed: 21497457
Int J Radiat Oncol Biol Phys. 2009 Jul 1;74(3):732-9
pubmed: 19095372
Med Dosim. 2002 Spring;27(1):21-4
pubmed: 12019961
J Bone Joint Surg Am. 2006 May;88(5):1093-100
pubmed: 16651585
Biomaterials. 2007 Nov;28(32):4845-69
pubmed: 17686513
Phys Med Biol. 2007 Feb 7;52(3):635-44
pubmed: 17228110
Phys Med Biol. 2017 Apr 21;62(8):R49-R80
pubmed: 28323641