Flat panel CT following stapes prosthesis insertion: an experimental and clinical study

Abstract

Flat panel computed tomography (fpCT) helps otosurgeons design precise stapes protheses. fpCT allows a prediction of the postoperative hearing outcome in patients. fpCT is an adequate imaging technique for immediate postoperative quality control. Postoperative management of patients with prosthesis-related complications is more appropriate.

Flat Panel Angiography in the Cross-Sectional Imaging of the Temporal Bone: Assessment of Image Quality and Radiation Dose Compared with a 64-Section Multisection CT Scanner

“…FPA is highly recommended in the assessment of cochlear implants and metallic prostheses after middle ear reconstructive surgery, as previously reported in the literature. [7][8][9] Regarding the cross-sectional imaging of the outer ear, we use FPA for the assessment of the bony external auditory canal, as in cases of suspected external auditory canal atresia or osteoma, which may be associated with middle ear malformations. In contrast, we do not use FPA for the assessment of pathologies that can involve the soft tissues of the periauricular region, such as malignant otitis externa because of the low contrast resolution of FPA.…”

“…Recently, flat panel angiography (FPA) was used in the cross-sectional imaging assessment of cochlear implants and metallic prostheses after middle ear reconstructive surgery because it is less susceptible to metallic artifacts. [7][8][9] However, the image quality of FPA of the normal temporal bone has not yet been investigated in patients during clinical practice, and radiation exposure has not been assessed so far, to our knowledge. It was our expectation that FPA could provide better image quality at lower radiation exposure compared with MSCT.…”

The Role of Imaging in the Diagnosis and Management of Otosclerosis

“…Imaging may help diagnose labyrinthitis, granulomas, prosthesis displacement or fracture, and perilymph fistulae (10,35,37). Imaging may help diagnose labyrinthitis, granulomas, prosthesis displacement or fracture, and perilymph fistulae (10,35,37).…”

Stapes Prosthesis Length: One Size Fits All?

“…During a clinical routine, two ways to choose a stapes prosthesis length are common: (1) the individual measurement of prosthesis length by adding 0.5 mm to the long incus process-to-footplate distance and (2) the use of a standard length of stapes prostheses for all cases. Mutze Observations with radiological tools, such as cone beam computer tomography and flat-panel tomography, of higher visual resolution on the stapes piston position allow the estimation of insertion depth with a low longitudinal artefact of down to 0.1 mm [Zaoui et al, 2012;Bozzato et al, 2010;Vandevoorde et al, 2017;Fang et al, 2016].…”