Maciej Wiatr

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The application of computer modelling for medical purposes, although challenging, is a promising pathway for further development in the medical sciences. We present predictive neural and k-nearest neighbour (k-NN) models for hearing improvements after middle ear surgery for chronic otitis media. The studied data set comprised 150 patients characterised by(More)
INTRODUCTION Amyloidosis' are the heterogeneous group of diseases characterized by extracellular accumulation of secondary protein structures causing progressive disturbances of the organs. Amyloid deposits are localized mainly in the tissues of parenchymal origin (spleen, kidneys, liver) and as far as otorhinolaryngologic organs are concerned the primary(More)
The primary objective of surgical treatment of chronic otitis media is to remove the pathological changes and restore the biology of the middle ear. Subsequently, ossicular chain reconstruction is performed in order to restore hearing. The aim of the study was to evaluate the efficacy of mathematical models (artificial neural networks) in postoperative(More)
BACKGROUND The principal objective of ossiculoplasty is to reconstruct the sound-conducting system in the ear to the best possible degree after the elimination of pathological lesions from the middle ear. The ossicular chain is reconstructed with the use of the patient's own properly modelled ossicles and synthetic prostheses. The objective of the study was(More)
BACKGROUND Otogenic intracranial complications are rare diseases. If misdiagnosed and untreated they can lead to serious condition of patient and life-threatening. This group of complications ought to be kept in mind in patients with chronic otitis media. AIM OF THE STUDY We discuss types of otogenic complications and performed treatment. MATERIAL AND(More)
PURPOSE The objective of this study is to evaluate the impact of changes to the mucous in the middle ear on the outcome of the reconstruction of the ossicular chain exemplified by a type 2 tympanoplasty. MATERIAL/METHODS A prospective analysis was carried out with regard to patients operated on at the Otolaryngology Department at Collegium Medicum,(More)
BACKGROUND Dysphagia is a common symptom of amyotrophic lateral sclerosis (ALS) and leads to increased risk of aspiration, malnutrition and dehydration. Swallowing mechanism in ALS patients has not been systematically studied. MATERIAL AND METHODS Based on the manometry analysis of upper investigate tract we have measured base of tongue contraction,(More)
BACKGROUND Skull bone defects in the region of middle ear are usually observed in the cases of chronic otitis media. Such loses can also be congenital, posttraumatic, iatrogenic or due to hyperplasia. They can potentially lead to development of otogenic intracranial complications. AIM We present the patients who were not observed during otosurgery to have(More)
The impact of scaling in advanced RF/MS-CMOS has been extensively discussed but there has not been a publication that compares the RF characteristics of 28nm high-K metal gate HKMG and PolySiON technologies fabricated in the same facility. In this work, we show that HKMG improves transistor f<sub>T</sub> and increases varactor tunning range. However, it can(More)
BACKGROUND Neuropathic pain, is caused by damage or disease affecting the somatosensory nervous system, leads to deterioration of the quality of life of patients. Most commonly, this deterioration is due to the inefficacy of treatment or to the adverse effects of systemic treatment. Pharmacotherapy of neuropathic pain involves the use of antiepileptic(More)