Central nervous system MRI and cardiac implantable electronic devices

Cadieu, Romain; Peron, M.; Ven, Florent Le; Kerdraon, Sébastien; Billen, Claire; Mansourati, Jacques; Salem, Douraı̈ed Ben

doi:10.1016/j.neurad.2016.09.004

Cited by 7 publications

(3 citation statements)

References 24 publications

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“…The disadvantage of MRI-based PSI is that it takes more time than CT-based PSI in the manual segmentation process for image reconstruction, and patients with a metallic foreign body (metal sliver) in their eyes, pacemakers, defibrillators, other implanted electronic devices, or an aneurysm clip in their brain are not candidates for MRI. 30 31) Despites these limitations, PSI is an accurate tool for determining the femoral bone resection in KA-TKA.…”

Section: Discussionmentioning

confidence: 99%

Accuracy of Patient-Specific Instrument for Cylindrical Axis Implementation in Kinematically Aligned Total Knee Arthroplasty

Kim

Song

2023

Clin Orthop Surg

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Background In kinematically aligned total knee arthroplasty (KA-TKA), the cylindrical axis (CA) is very important in restoring the native joint line and kinematics of the pre-arthritic knee. This study aimed to determine the accuracy of patient-specific instrument (PSI) for restoring the CA for femoral bone resection in KA-TKA. Methods Thirty KA-TKAs were performed using a computed tomography (CT)-based PSI system. Data from preoperative CT were reconstructed into three-dimensional (3D) models using 3D-planning software. The CA was created by connecting the centers of each virtual sphere to the medial and lateral femoral condyles using computer software. Femoral bone resection of the distal and posterior condyles was performed parallel to the sagittal planes of the CA. The thickness of the CA-referenced bone resection was determined based on the thickness necessary for the respective regions of the femoral component. The PSI was manufactured to locate the guide pin for a conventional cutting block. The accuracy of PSI for KA-TKA was evaluated as the absolute error between the preoperatively predicted thickness and the intraoperative measurements in each of the four regions, as well as the difference in error between distal-medial (DM) and posterior-medial (PM) and between distal-lateral (DL) and posterior-lateral (PL). Results The differences in thickness of bone cut in the DM, DL, PM, and PL were 0.79 ± 0.39 mm (range, –1.20 to 1.50), 0.70 ± 0.42 mm (range, –1.50 to 1.50), 0.80 ± 0.46 mm (range, –0.80 to 1.50), and 0.75 ± 0.47 mm (range, –2.10 to 1.40), respectively. There was no significant difference in the thickness error between DM and PM ( p = 0.959) and between DL and PL ( p = 0.812). Conclusions In KA-TKA, PSI was effective for accurate femoral bone resection based on virtually planned thickness.

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Section: Discussionmentioning

confidence: 99%

Accuracy of Patient-Specific Instrument for Cylindrical Axis Implementation in Kinematically Aligned Total Knee Arthroplasty

Kim

Song

2023

Clin Orthop Surg

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“…However, there is growing experience safely obtaining MRI scans in patients with non-MRI-conditional implantable cardiac devices, and this patient was able to obtain scans at a centre with appropriate cardiac electrophysiology and neuroradiology expertise, support, and staffing to facilitate a safe study. 6 This required extensive coordination and travel for the patient in this case given limited options for facilities that could accommodate his pacemaker. This case highlights that, through collaboration with cardiology and radiology specialists, appropriate imaging was safely obtained in a patient with an implantable electronic cardiac device.…”

Section: Discussionmentioning

confidence: 99%

Diagnostic Challenge: Sequential Unilateral Cranial Neuropathies Due to Perineural Spread of Carcinoma

Moss

MacIntosh

Slavin

et al. 2017

Neuro-Ophthalmology

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An 86-year old man developed sequential dysfunction of trigeminal (V1), facial, abducens, trigeminal (v2), oculomotor, and hypoglossal cranial nerves on the right over 20 months. Magnetic resonance imaging (MRI) showed a lesion in the right cavernous sinus. Although there was clinical suspicion that this was related to perineural spread of an extracranial tumour, a primary lesion was not discovered. Stereotactic biopsies of the intracranial lesion were non-diagnostic, and the patient succumbed to his tumour following a period of rapid growth. Postmortem examination showed the intracranial lesion to be a carcinoma with squamous features. This case highlights the challenges of diagnosis of intracranial perineural spread and the potential for transformation from indolent to aggressive tumour behaviour.

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“…ICDs sowie Stimulatoren im Rahmen der tiefen Hirnstimulation (THS) gehen. Die Risiken für entsprechende Patienten bei der Magnetresonanztomografie-Bildgebung wurden bereits ausführlich analysiert und diskutiert (siehe [1,2]), Hinweise darauf finden sich auch in den entsprechenden Geräteunterlagen auf Herstellerseite. Demgegenüber ist eine technisch denkbare Beeinflussung dieser Stimulatoren durch die bei der Neurografie (somatosensorisch evozierte Potenziale -SEP, Nervenleitschweindigkeit -NLG) übliche Stromstimulation (nachfolgend "NStim" genannt) bislang kaum Gegenstand von Risikobetrachtungen gewesen.…”

Section: Introductionunclassified

Sicherheit der Stromstimulation für implantierte elektrische Stimulatoren

Hinrichs¹

2017

Klin Neurophysiol

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Implantierte elektrische Stimulatoren werden in der Kardiologie als auch in der Neurologie routinem??ig therapeutisch genutzt. Es stellt sich die Frage, ob diese Systeme bei klinischen elektrophysiologisch-diagnostischen Verfahren sicher arbeiten. Anhand einer Metaanalyse entsprechender Studien und einer Recherche in der BfArM-Datenbank wird dargelegt, inwieweit die Stromstimulation ein Risiko f?r implantierte elektrische Stimulatoren darstellt.

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Central nervous system MRI and cardiac implantable electronic devices

Cited by 7 publications

References 24 publications

Accuracy of Patient-Specific Instrument for Cylindrical Axis Implementation in Kinematically Aligned Total Knee Arthroplasty

Accuracy of Patient-Specific Instrument for Cylindrical Axis Implementation in Kinematically Aligned Total Knee Arthroplasty

Diagnostic Challenge: Sequential Unilateral Cranial Neuropathies Due to Perineural Spread of Carcinoma

Sicherheit der Stromstimulation für implantierte elektrische Stimulatoren

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