Reducing Radiation Dose for High-resolution Flat-panel CT Imaging of Superior Semicircular Canal Dehiscence

Mekabaty, Amgad El; Pross, Seth E.; Martinez, Mesha; Carey, John P.; Pearl, Monica S.

doi:10.1097/mao.0000000000001927

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…Patient radiation dose can be an issue with this type of high spatial resolution imaging. Studies have looked at ways of reducing the patient dose while maintaining the high resolution diagnostic quality including removing the anti-scatter grid [8]. There is much utility of FPCT in several other situations including identifying electrode contact position in cochlear implants in frequency evaluations [9].…”

Section: Discussionmentioning

confidence: 99%

3-D Stereoscopic Display of High Resolution Flat Panel Computed Tomography Temporal Bone Imaging

Kiczek¹

2019

OHNS

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Section: Discussionmentioning

confidence: 99%

3-D Stereoscopic Display of High Resolution Flat Panel Computed Tomography Temporal Bone Imaging

Kiczek¹

2019

OHNS

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“…Due to its higher spatial resolution, FPCT yields equal or higher image quality than MSCT when assessing bony structures of diagnostic interest for radiologists. 7,8,[14][15][16] Potential drawbacks to using FPCT for temporal bone imaging compared with MSCT include lack of widespread availability and poorer resolution of soft tissue with currently available FPCT systems.…”

Section: Fpct Versus Msctmentioning

confidence: 99%

Vestibular Implant Imaging

Hedjoudje

Schoo²,

Ward³

et al. 2020

AJNR Am J Neuroradiol

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Analogous to hearing restoration via cochlear implants, vestibular function could be restored via vestibular implants that electrically stimulate vestibular nerve branches to encode head motion. This study presents the technical feasibility and first imaging results of CT for vestibular implants in 8 participants of the first-in-human Multichannel Vestibular Implant Early Feasibility Study. Imaging characteristics of 8 participants (3 men, 5 women; median age, 59.5 years; range, 51-66 years) implanted with a Multichannel Vestibular Implant System who underwent a postimplantation multislice CT (n ¼ 2) or flat panel CT (n ¼ 6) are reported. The device comprises 9 platinum electrodes inserted into the ampullae of the 3 semicircular canals and 1 reference electrode inserted in the common crus. Electrode insertion site, positions, length and angle of insertion, and number of artifacts were assessed. Individual electrode contacts were barely discernible in the 2 participants imaged using multislice CT. Electrode and osseous structures were detectable but blurred so that only 12 of the 18 stimulating electrode contacts could be individually identified. Flat panel CT could identify all 10 electrode contacts in all 6 participants. The median reference electrode insertion depth angle was 9°(range, À57.5°to 45°), and the median reference electrode insertion length was 42 mm (range, À21À66 mm). Flat panel CT of vestibular implants produces higher-resolution images with fewer artifacts than multidetector row CT, allowing visualization of individual electrode contacts and quantification of their locations relative to vestibular semicircular canals and ampullae. As multichannel vestibular implant imaging improves, so will our understanding of the relationship between electrode placement and vestibular performance.

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Removal of Antiscatter Grids for Spinal Digital Subtraction Angiography: Dose Reduction without Loss of Diagnostic Value

et al. 2020

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Reducing Radiation Dose for High-resolution Flat-panel CT Imaging of Superior Semicircular Canal Dehiscence

Abstract: Removing the antiscatter grid during FPCT imaging of the temporal bones is a simple and effective way to reduce radiation exposure while maintaining diagnostic image quality for the evaluation of SSCD.

Cited by 4 publications

References 19 publications

3-D Stereoscopic Display of High Resolution Flat Panel Computed Tomography Temporal Bone Imaging

3-D Stereoscopic Display of High Resolution Flat Panel Computed Tomography Temporal Bone Imaging

Vestibular Implant Imaging

Removal of Antiscatter Grids for Spinal Digital Subtraction Angiography: Dose Reduction without Loss of Diagnostic Value

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