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Article ; Online: Subcutan és intramuscularis heterotop kalcifikáció a nyakon 42 évvel a sugárkezelést követően.

Pfiszterer, Péter / Vass, Gábor / Rovó, László / Perényi, Ádám / Kelemen, Gyöngyi / Bach, Ádám

2023 Volume 164, Issue 10, Page(s) 383–387

Abstract: Radiotherapy-induced heterotopic tissue calcification is an exceedingly rare complication in the head and neck region. We report a patient with extensive, radiotherapy-induced, combined subcutaneous and intramuscular, heterotopic calcification of the ... ...

Title translation	Subcutaneous and intramuscular heterotopic calcification of the neck 42 years after radiotherapy.
Abstract	Radiotherapy-induced heterotopic tissue calcification is an exceedingly rare complication in the head and neck region. We report a patient with extensive, radiotherapy-induced, combined subcutaneous and intramuscular, heterotopic calcification of the neck. An 80-year-old male presented with a 2-month history of severe dysphagia and a painful ulcer on the neck 42 years after salvage total laryngectomy following radiotherapy (total dose: 80 Gy) for a T3N0M0 glottic squamous cell carcinoma. We excluded recurrence or secondary malignancy by biopsy and performed computed tomography, which revealed subcutaneous and intramuscular calcification in the area of the skin ulcer and close to the hypopharyngeal wall, moreover, total occlusion of the common carotid and vertebral arteries bilaterally. Surgical correction involved removing the calcified lesions and closure using fasciocutaneous flap transposition. The patient has been asymptomatic for the past 48 months. Radiotherapy plays an essential role in the treatment of patients with head and neck squamous cell carcinoma. Distorted postoperative anatomy, excessive scar formation, radiotherapy-induced fibrosis as well as skin and subcutaneous tissue calcification can present as atypical findings. Orv Hetil. 2023; 164(10): 383-387.
MeSH term(s)	Aged, 80 and over ; Humans ; Male ; Choristoma/diagnosis ; Choristoma/etiology ; Head and Neck Neoplasms/radiotherapy ; Squamous Cell Carcinoma of Head and Neck/radiotherapy ; Subcutaneous Tissue/pathology ; Subcutaneous Tissue/radiation effects ; Radiotherapy/adverse effects ; Neck Muscles/pathology ; Neck Muscles/radiation effects
Language	Hungarian
Publishing date	2023-03-12
Publishing country	Hungary
Document type	Case Reports ; English Abstract
ZDB-ID	123879-6
ISSN	1788-6120 ; 0030-6002
ISSN (online)	1788-6120
ISSN	0030-6002
DOI	10.1556/650.2023.32734
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Article ; Online: [Dimensions of the human temporal bone that are relevant to cochlear implantation surgery in infants and toddlers.

Perényi, Ádám / Jóri, József / Csanády, Miklós / Rovó, László

Orvosi hetilap

2019 Volume 160, Issue 24, Page(s) 936–943

Abstract: Introduction: ...

Title translation	Az emberi halántékcsontnak a csecsemő- és kisgyermekkori cochlearis implantáció szempontjából kiemelkedően fontos dimenziói.
Abstract	Introduction:
MeSH term(s)	Child, Preschool ; Cochlear Implantation/methods ; Cochlear Implants ; Humans ; Infant ; Round Window, Ear/anatomy & histology ; Round Window, Ear/diagnostic imaging ; Round Window, Ear/surgery ; Temporal Bone/anatomy & histology ; Temporal Bone/diagnostic imaging ; Temporal Bone/surgery ; Tomography, X-Ray Computed
Language	Hungarian
Publishing date	2019-08-21
Publishing country	Hungary
Document type	Journal Article
ZDB-ID	123879-6
ISSN	1788-6120 ; 0030-6002
ISSN (online)	1788-6120
ISSN	0030-6002
DOI	10.1556/650.2019.31389
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Article ; Online: Detection of “tip fold-over” of the cochlear implant electrode array with transimpedance matrix (TIM) measurement

Nagy, Roland / Perényi, Ádám / Dimák, Balázs / Csanády, Miklós / Kiss, József / Rovó, László

Orvosi hetilap

2021 Volume 162, Issue 25, Page(s) 988–996

Title translation	Az elektródasor visszatekeredésének kimutatása transzimpedanciamátrix (TIM)-vizsgálattal cochlearis implantátumban.
MeSH term(s)	Child, Preschool ; Cochlea/surgery ; Cochlear Implantation ; Cochlear Implants ; Deafness ; Electrodes, Implanted ; Humans
Language	Hungarian
Publishing date	2021-06-20
Publishing country	Hungary
Document type	Journal Article
ZDB-ID	123879-6
ISSN	1788-6120 ; 0030-6002
ISSN (online)	1788-6120
ISSN	0030-6002
DOI	10.1556/650.2021.32073
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Article: A new method to determine the optimal orientation of Slim Modiolar cochlear implant electrode array insertion.

Horváth, Bence / Perényi, Ádám / Molnár, Anna Fiona / Csanády, Miklós / Kiss, Géza József / Rovó, László

Ideggyogyaszati szemle

2021 Volume 74, Issue 5-6, Page(s) 191–195

Abstract: Background and purpose: Our goal was to determine the optimal orientation of insertion of the Slim Modiolar electrode and develop an easy-to-use method to aid implantation surgery. In some instances, the electrode arrays cannot be inserted in their full ...

Title translation	Új módszer a vékony perimodioláris cochlearis implantátumelektróda ideális bevezetési irányának meghatározására.
Abstract	Background and purpose: Our goal was to determine the optimal orientation of insertion of the Slim Modiolar electrode and develop an easy-to-use method to aid implantation surgery. In some instances, the electrode arrays cannot be inserted in their full length. This can lead to buckling, interscalar dislocation or tip fold-over. In our opinion, one of the possible reasons of tip fold-over is unfavourable orientation of the electrode array. Our goal was to determine the optimal orientation of the Slim Modiolar electrode array relative to clear surgical landmarks and present our method in one specified case. Methods: For the measurement, we used the preoperative CT scan of one of our cochlear implant patients. These images were processed by an open source and free image visualization software: 3D Slicer. In the first step we marked the tip of the incus short process and then created the cochlear view. On this view we drew two straight lines: the first line represented the insertion guide of the cochlear implant and the second line was the orientation marker (winglet). We determined the angle enclosed by winglet and the line between the tip of the incus short process and the cross-section of previously created two lines. For the calculation we used a self-made python code. Results: The result of our algorithm for the angle was 46.6055°. To validate this result, we segmented, from the CT scan, the auditory ossicles and the membranaceous labyrinth. From this segmentation we generated a 3D reconstruction. On the 3D view, we can see the position of the previous lines relative to the anatomical structures. After this we rotated the 3D model together with the lines so that the insertion guide forms a dot. In this view, the angle was measured with ImageJ and the result was 46.599°. Conclusion: We found that our method is easy, fast, and time-efficient. The surgery can be planned individually for each patient, based on their routine preoperative CT scan of the temporal bone, and the implantation procedure can be made safer. In the future we plan to use this method for all cochlear implantation surgeries, where the Slim Modiolar electrode is used.
MeSH term(s)	Cochlea/diagnostic imaging ; Cochlea/surgery ; Cochlear Implantation ; Cochlear Implants ; Electrodes, Implanted ; Humans ; Temporal Bone
Language	English
Publishing date	2021-06-09
Publishing country	Hungary
Document type	Journal Article
ZDB-ID	2240317-6
ISSN	0019-1442
ISSN	0019-1442
DOI	10.18071/isz.74.0191
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Article ; Online: A novel intraoperative imaging tool to follow the cochlear implant electrode array insertion dynamics

Perényi, Ádám / Nagy, Roland / Horváth, Bence / Posta, Bálint / Dimák, Balázs / Csanády, Miklós / Kiss, József Géza / Rovó, László

Orvosi hetilap

2021 Volume 162, Issue 22, Page(s) 878–883

Title translation	Új műtéti képalkotó lehetőség a belsőfül-implantátum elektródasorának dinamikus helyzetmeghatározására.
MeSH term(s)	Cochlea/surgery ; Cochlear Implantation ; Cochlear Implants ; Deafness ; Electrodes, Implanted ; Humans
Language	Hungarian
Publishing date	2021-05-30
Publishing country	Hungary
Document type	Journal Article
ZDB-ID	123879-6
ISSN	1788-6120 ; 0030-6002
ISSN (online)	1788-6120
ISSN	0030-6002
DOI	10.1556/650.2021.32085
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Article ; Online: Automated liver lesion detection in CT images based on multi-level geometric features.

Ruskó, László / Perényi, Ádám

International journal of computer assisted radiology and surgery

2013 Volume 9, Issue 4, Page(s) 577–593

Abstract: Purpose: Due to the increasing number of liver cancer cases in clinical practice, there is a significant need for efficient tools for computer-assisted liver lesion analysis. A wide range of clinical applications, such as lesion characterization, ... ...

Abstract	Purpose: Due to the increasing number of liver cancer cases in clinical practice, there is a significant need for efficient tools for computer-assisted liver lesion analysis. A wide range of clinical applications, such as lesion characterization, quantification and follow-up, can be facilitated by automated liver lesion detection. Liver lesions vary significantly in size, shape, density and heterogeneity, which make them difficult to detect automatically. The goal of this work was to develop a method that can detect all types of liver lesions with high sensitivity and low false positive rate within a short run time. Methods: The proposed method identifies abnormal regions in liver CT images based on their intensity using a multi-level segmentation approach. The abnormal regions are analyzed from the inside-out using basic geometric features (such as asymmetry, compactness or volume). Using this multi-level shape characterization, the abnormal regions are classified into lesions and other region types (including vessel, liver boundary). The proposed analysis also allows defining the contour of each finding. The method was trained on a set of 55 cases involving 120 lesions and evaluated on a set of 30 images involving 59 (various types of) lesions, which were manually contoured by a physician. Results: The proposed algorithm demonstrated a high detection rate (92 %) at a low (1.7) false positive per case (precision 51 %), when the method was started from a manually contoured liver. The same level of false positive per case (1.6) and precision (51 %) was achieved at a somewhat lower detection rate (85 %), when the volume of interest was defined by a fully automated liver segmentation. Conclusions: The proposed method can efficiently detect liver lesions irrespective of their size, shape, density and heterogeneity within half a minute. According to the evaluation, its accuracy is competitive with the actual state-of-the-art approaches, and the contour of the detected findings is acceptable in most of the cases. Future work shall focus on more precise lesion contouring so that the proposed method can be a solid basis for fully automated liver tumour burden estimation.
MeSH term(s)	Algorithms ; Humans ; Liver/diagnostic imaging ; Liver Neoplasms/diagnostic imaging ; Radiographic Image Interpretation, Computer-Assisted/methods
Language	English
Publishing date	2013-10-05
Publishing country	Germany
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2365628-1
ISSN	1861-6429 ; 1861-6410
ISSN (online)	1861-6429
ISSN	1861-6410
DOI	10.1007/s11548-013-0949-9
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Article ; Online: Surgical Solution for the Transformation of the Percutaneous Bone Anchored Hearing Aid to a Transcutaneous System in Complicated Cases.

Bere, Zsofia / Vass, Gabor / Perenyi, Adam / Tobias, Zoltan / Rovo, Laszlo

The journal of international advanced otology

2020 Volume 16, Issue 3, Page(s) 477–481

Abstract: Bone-anchored hearing aids (BAHAs) have been used for multiple types of hearing loss both in pediatric and adult cases. In the last decades, the percutaneous BAHA® Connect System (Cochlear Ltd., Sydney, Australia) was replaced by the fully implanted ... ...

Abstract	Bone-anchored hearing aids (BAHAs) have been used for multiple types of hearing loss both in pediatric and adult cases. In the last decades, the percutaneous BAHA® Connect System (Cochlear Ltd., Sydney, Australia) was replaced by the fully implanted transcutaneous, magnet-based BAHA® Attract System (Cochlear Ltd., Sydney, Australia). Since the implantable part of the Attract device is fully covered with soft tissue, skin complications that were frequently observed in the percutaneous system, could be eliminated. As an outcome of this important advantage of the Attract System, conversion of the percutaneous into a transcutaneous system should be considered. In the following methodology report, a possible surgical technique is described. The method can easily be adopted to different conditions in which the replacement of the percutaneous device is necessary.
MeSH term(s)	Adolescent ; Adult ; Bone Conduction ; Child ; Hearing Aids ; Hearing Loss ; Hearing Loss, Conductive ; Humans ; Male ; Surgical Flaps
Language	English
Publishing date	2020-11-12
Publishing country	Turkey
Document type	Journal Article
ISSN	2148-3817
ISSN (online)	2148-3817
DOI	10.5152/iao.2020.6881
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Article ; Online: Response to the Letter to the Editor "Pediatric morphometric study to guide the optimized implantation of the Osia

Posta, Balint / Perenyi, Adam / Szabo, Linda / Nagy, Roland / Kiss, Jozsef Geza / Katona, Gabor / Csakanyi, Zsuzsanna / Rovo, Laszlo / Bere, Zsofia

European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery

2022 Volume 279, Issue 12, Page(s) 5973–5974

MeSH term(s)	Humans ; Child ; Prostheses and Implants ; Body Weights and Measures
Language	English
Publishing date	2022-09-22
Publishing country	Germany
Document type	Letter ; Comment
ZDB-ID	1017359-6
ISSN	1434-4726 ; 0937-4477
ISSN (online)	1434-4726
ISSN	0937-4477
DOI	10.1007/s00405-022-07610-5
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Article ; Online: Tracheostomy during novel corona virus pandemic.

Perényi, Ádám / Sztanó, Balázs / Bella, Zsolt / Szegesdi, Ilona / Csanády, Miklós / Kelemen, Éva / Babik, Barna / Rovó, László

Orvosi hetilap

2020 Volume 161, Issue 19, Page(s) 767–770

Abstract: Recently, 6 percent of COVID-19 patients required prolonged mechanical ventilation due to severe respiratory failure. Early tracheostomy prevents the risk of postintubation upper airway stenosis. In the pandemic, all surgical interventions that generate ... ...

Title translation	Tracheotomia az új típusú koronavírus okozta járvány idején(A COVID-19-pandémia orvosszakmai kérdései).
Abstract	Recently, 6 percent of COVID-19 patients required prolonged mechanical ventilation due to severe respiratory failure. Early tracheostomy prevents the risk of postintubation upper airway stenosis. In the pandemic, all surgical interventions that generate aerosol increase the risk of contamination of the medical staff, for which reason the "traditional" indications of tracheostomy have to be revised. Authors present their recommendations based on international experiences. Orv Hetil. 2020; 161(19): 767-770.
MeSH term(s)	Aerosols ; Betacoronavirus ; COVID-19 ; Coronavirus Infections/prevention & control ; Coronavirus Infections/transmission ; Humans ; Infection Control/methods ; Infectious Disease Transmission, Patient-to-Professional/prevention & control ; Pandemics/prevention & control ; Pneumonia, Viral/prevention & control ; Pneumonia, Viral/transmission ; Respiration, Artificial ; SARS-CoV-2 ; Tracheostomy/methods
Chemical Substances	Aerosols
Keywords	covid19
Language	Hungarian
Publishing date	2020-05-11
Publishing country	Hungary
Document type	Journal Article
ZDB-ID	123879-6
ISSN	1788-6120 ; 0030-6002
ISSN (online)	1788-6120
ISSN	0030-6002
DOI	10.1556/650.2020.31832
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Article ; Online: Pediatric morphometric study to guide the optimized implantation of the Osia

Posta, Balint / Perenyi, Adam / Szabo, Linda / Nagy, Roland / Katona, Gabor / Csakanyi, Zsuzsanna / Rovo, Laszlo / Bere, Zsofia

2022 Volume 279, Issue 10, Page(s) 4909–4915

Abstract: Purpose: Continuous technological advances result in the availability of new bone conduction hearing implants, of which their suitability for pediatric patients is of major concern. The Cochlear: Methods: We examined retrospectively cranial CT scans ... ...

Abstract	Purpose: Continuous technological advances result in the availability of new bone conduction hearing implants, of which their suitability for pediatric patients is of major concern. The Cochlear Methods: We examined retrospectively cranial CT scans of 5-12-year-old patients from our clinical database. We measured the bone and soft-tissue thickness in the region of interest, and the position of the sigmoid sinus. 3D printed temporal bones were also used for planning. Results: Soft-tissue thickness varied between 3.2 ± 0.5 mm and 3.6 ± 0.6 mm and bone thickness varied between 3.5 ± 1.1 mm and 4.7 ± 0.3 mm. The sigmoid sinus was located 1.3 ± 0.2 cm posterior to the ear canal, and the anterior distance was 4.8 ± 0.9 to 7.1 ± 1.1 mm. Conclusions: Our morphometric studies showed that patients aged 5-12 have different anatomical dimensions compared to adults, but that implantation of the Osia 2 system is feasible in these patients using an altered implant positioning recommended by our data. The Cochlear™ Osia
MeSH term(s)	Adult ; Bone Conduction ; Child ; Child, Preschool ; Cochlear Implantation/methods ; Hearing Aids ; Hearing Loss, Conductive/surgery ; Humans ; Pediatrics ; Retrospective Studies ; Treatment Outcome
Language	English
Publishing date	2022-03-16
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1017359-6
ISSN	1434-4726 ; 0937-4477
ISSN (online)	1434-4726
ISSN	0937-4477
DOI	10.1007/s00405-022-07338-2
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