{'fraction_non_alphanumeric': 0.021423635107118175, 'fraction_numerical': 0.0, 'mean_word_length': 5.435555555555555, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Geometric modeling of the temporal bone for cochlea implant simulation

The first stage in the development of a clinically valid surgical simulator for training otologic surgeons in performing 
cochlea implantation is presented. For this purpose, a geometric model of the temporal bone has been derived from a 
cadaver specimen using the biomedical image processing software package Analyze (AnalyzeDirect, Inc) and its 
three-dimensional reconstruction is examined. Simulator construction begins with registration and processing of a 
Computer Tomography (CT) medical image sequence. Important anatomical structures of the middle and inner ear are 
identified and segmented from each scan in a semi-automated threshold-based approach. Linear interpolation between 
image slices produces a three-dimensional volume dataset: the geometrical model. Artefacts are effectively eliminated 
using a semi-automatic seeded region-growing algorithm and unnecessary bony structures are removed. Once validated 
by an Ear, Nose and Throat (ENT) specialist, the model may be imported into the Reachin Application Programming 
Interface (API) (Reachin Technologies AB) for visual and haptic rendering associated with a virtual mastoidectomy. 
Interaction with the model is realized with haptics interfacing, providing the user with accurate torque and force 
feedback. Electrode array insertion into the cochlea will be introduced in the final stage of design.