Estimation of angular insertion depth of a cochlear implant electrode array: 3D reconstruction versus spiral formulae.

Objective: The primary objective was to determine which of the following angular insertion depth (AID) estimation methods had the strongest correlation with the post-operative AID (AIDpost-op) of a lateral wall (LW) electrode: 1) Escudé formula based on the largest distance from the round window (RW) to the LW (distance A), 2) the elliptic-circular approximation (ECA) method based on both distance A and the perpendicular distance (distance B), 3) a 3D reconstruction method. The secondary objective was to evaluate the impact of using the actual electrode insertion length on the evaluation of the AID estimation methods.

Methods: The study included 45 cochleae implanted with the Advanced Bionics SlimJ electrode, with all 16 active electrode contacts being intracochlear.

Erratum: Unpaired intra-operative OCT (iOCT) video super-resolution with contrastive learning: erratum.

[This corrects the article on p. 772 in vol. 15, PMID: 38404298.

Unpaired intra-operative OCT (iOCT) video super-resolution with contrastive learning.

Regenerative therapies show promise in reversing sight loss caused by degenerative eye diseases. Their precise subretinal delivery can be facilitated by robotic systems alongside with Intra-operative Optical Coherence Tomography (iOCT). However, iOCT's real-time retinal layer information is compromised by inferior image quality.

The impact of the size and angle of the cochlear basal turn on translocation of a pre-curved mid-scala cochlear implant electrode.

Scalar translocation is a severe form of intra-cochlear trauma during cochlear implant (CI) electrode insertion. This study explored the hypothesis that the dimensions of the cochlear basal turn and orientation of its inferior segment relative to surgically relevant anatomical structures influence the scalar translocation rates of a pre-curved CI electrode. In a cohort of 40 patients implanted with the Advanced Bionics Mid-Scala electrode array, the scalar translocation group (40%) had a significantly smaller mean distance A of the cochlear basal turn (p < 0.

Surgical biomicroscopy-guided intra-operative optical coherence tomography (iOCT) image super-resolution.

Purpose: Intra-retinal delivery of novel sight-restoring therapies will require the precision of robotic systems accompanied by excellent visualisation of retinal layers. Intra-operative Optical Coherence Tomography (iOCT) provides cross-sectional retinal images in real time but at the cost of image quality that is insufficient for intra-retinal therapy delivery.This paper proposes a super-resolution methodology that improves iOCT image quality leveraging spatiotemporal consistency of incoming iOCT video streams.

Intra-operative OCT (iOCT) Super Resolution: a Two-Stage Methodology Leveraging High Quality Pre-operative OCT Scans.

Regenerative therapies have recently shown potential in restoring sight lost due to degenerative diseases. Their efficacy requires precise intra-retinal delivery, which can be achieved by robotic systems accompanied by high quality visualization of retinal layers. Intra-operative Optical Coherence Tomography (iOCT) captures cross-sectional retinal images in real-time but with image quality that is inadequate for intra-retinal therapy delivery.

Ultrasound 3D reconstruction of malignant masses in robotic-assisted partial nephrectomy using the PAF rail system: a comparison study.

Purpose: In robotic-assisted partial nephrectomy (RAPN), the use of intraoperative ultrasound (IOUS) helps to localise and outline the tumours as well as the blood vessels within the kidney. The aim of this work is to evaluate the use of the pneumatically attachable flexible (PAF) rail system for US 3D reconstruction of malignant masses in RAPN. The PAF rail system is a novel device developed and previously presented by the authors to enable track-guided US scanning.