A5102782878- Research in Social Sciences
- Dental Radiography and Imaging
- Radiation Dose and Imaging
- Advanced X-ray and CT Imaging
- Sinusitis and nasal conditions
- Medical Imaging Techniques and Applications
- Dental Implant Techniques and Outcomes
- Neural and Behavioral Psychology Studies
- Anatomy and Medical Technology
- Interprofessional Education and Collaboration
- Neural dynamics and brain function
- Neuroscience and Music Perception
- EEG and Brain-Computer Interfaces
- Hearing Loss and Rehabilitation
- Head and Neck Cancer Studies
- Advanced Radiotherapy Techniques
- Motor Control and Adaptation
- Reliability and Agreement in Measurement
- Education, Healthcare and Sociology Research
- Neurobiology of Language and Bilingualism
- Hearing, Cochlea, Tinnitus, Genetics
- Psychiatric care and mental health services
- Plant and fungal interactions
- Innovative Approaches in Technology and Social Development
- Ophthalmology and Visual Impairment Studies
University of Helsinki
2010-2024
Helsinki Institute of Physics
2014-2024
Finnish Institute for Health and Welfare
2022
Amsterdam UMC Location Vrije Universiteit Amsterdam
2016-2018
Faculty of Media
2014
Helsinki University Hospital
2001-2003
Musical competence may confer cognitive advantages that extend beyond processing of familiar musical sounds. Behavioural evidence indicates a general enhancement both working memory and attention in musicians. It is possible musicians, due to their training, are better able maintain focus on task-relevant stimuli, skill which crucial memory. We measured the blood oxygenation-level dependent (BOLD) activation signal musicians non-musicians during sounds determine relation among performance,...
The neural processes subserving working memory, and brain structures underlying this system, continue to develop during childhood. We investigated the effects of age gender on audiospatial visuospatial memory in a nonclinical sample school-aged children using n-back tasks. results showed that auditory visual performance improves with age, suggesting functional maturation cognitive areas. differences found tasks suggest larger degree immaturity boys than girls at period 6–10 yr. observed...
Musicians and nonmusicians listened to major, minor, dissonant musical chords while their BOLD brain responses were registered with functional magnetic resonance imaging. In both groups of listeners, minor chords, compared major elicited enhanced in several areas, including the amygdala, retrosplenial cortex, stem, cerebellum, during passive listening but not memorization chords. The results indicate that (1) neural processing emotion-related areas is activated even by single (2) emotion...
The objective of this study was to assess and compare the organ effective doses in knee area resulting from different commercially available multislice computed tomography devices (MSCT), one cone beam device (CBCT) conventional X-ray radiography using MOSFET dosemeters an anthropomorphic RANDO phantom. Measurements MSCT resulted ranging between 27 48 µSv. CBCT measurements dose 12.6 attained were 1.8 µSv for lateral 1.2 anterior–posterior projections. considerably lower than those recorded...
Abstract Background The aim of this study was to assess and compare the effective doses (ICRP 103) in ankle region X‐ray imaging resulting from a multi slice computed tomography (MSCT) device, two cone beam CT (CBCT) devices one conventional x‐ray device. Methods Organ dose measurements were performed using 20 metal oxide field effect transistor (MOSFET) dosimeters that placed custom made anthropomorphic RANDO phantom. following scanners assessed study: Siemens Sensation Open 24‐slice...
Medical additive manufacturing requires standard tessellation language (STL) models. Such models are commonly derived from computed tomography (CT) images using thresholding. Threshold selection can be performed manually or automatically. The aim of this study was to assess the impact manual and default threshold on reliability accuracy skull STL different CT technologies. One female one male human cadaver head were imaged multi-detector row CT, dual-energy two cone-beam scanners. Four...
The objective of the present study was to assess and compare effective doses in wrist region resulting from conventional radiography device, multislice computed tomography (MSCT) device two cone beam (CBCT) devices using MOSFET dosemeters a custom made anthropomorphic RANDO phantom according ICRP 103 recommendation. dose for 1.0 μSv. NewTom 5 G CBCT ranged between 0.7 μSv 1.6 μSv, Planmed Verity 2.4 MSCT 8.6 When compared with AP- LAT projections radiographic this showed an 8.6-fold standard...
Purpose Additive manufactured (AM) skull models are increasingly used to plan complex surgical cases and design custom implants. The accuracy of such constructs depends on the standard tessellation language (STL) model, which is commonly obtained from computed tomography (CT) data. aims this study were assess image quality STL acquired using different CT scanners acquisition parameters. Design/methodology/approach Images three dry human skulls two multi-detector row (MDCT) scanners, a dual...
Over the past decade, convolutional neural networks (CNNs) have revolutionized field of medical image segmentation. Prompted by developments in computational resources and availability large datasets, a wide variety different two-dimensional (2D) three-dimensional (3D) CNN training strategies been proposed. However, systematic comparison impact these on segmentation performance is still lacking. Therefore, this study aimed to compare eight strategies, namely 2D (axial, sagittal coronal...
Conclusions: The present experimental set-up of high spatial resolution cone-beam computed tomography (CBCT) showed advantages demonstrating the critical landmarks cochlea in identifying position intracochlear electrode contacts and has potential for clinical application cochlear implant (CI) surgery. Objective: To evaluate a newly developed CBCT system defining CI array human temporal bone morphological variation. Methods: Standard electrode, flexible tip (Flex28), an with 36 from MED-EL...
The aims of this study were to characterize reinforced metal‐oxide‐semiconductor field‐effect transistor (MOSFET) dosimeters assess the measurement uncertainty, single exposure low‐dose limit with acceptable accuracy, and number exposures required attain corresponding thermoluminescent (TLD). second aim was MOSFET dosimeter sensitivities for two dental photon energy ranges, dose dependency, rate accumulated dependency. A further compare performance MOSFETs those TLDs in an anthropomorphic...
When performing dose measurements on an X-ray device with multiple angles of irradiation, it is necessary to take the angular dependence metal-oxide-semiconductor field-effect transistor (MOSFET) dosimeters into account. The objective this study was investigate sensitivity MOSFET in three rotational axes measured free-in-air and soft-tissue equivalent material using dental photon energy. Free-in-air were performed attached a carbon fibre holder. Soft tissue placed polymethylmethacrylate...
The objective of this study was to compare the performance metal oxide semiconductor field-effect transistor (MOSFET) technology dosemeters with thermoluminescent (TLDs) (TLD 100; Thermo Fisher Scientific, Waltham, MA) in maxillofacial area.
The primary aim was to evaluate the effective dose for a full size panoramic image and nine different protocols using collimation. secondary estimate possible reduction of in clinical situations.
Objective: To evaluate the impact of tube voltage, current, pulse number, and magnification factor on image quality a novel experimental set-up corresponding radiation. Materials Methods: Six human temporal bones with cochlear implant were imaged using various voltages, currents, numbers, magnification. The effect radiation was evaluated metaloxide semiconductor field-effect transistor (MOSFET) dosimeter device an anthropomorphic RANDO RAN102 male head phantom. A copper aluminum combination...
To compare the cone-beam computed tomography (CBCT) image quality and effective dose between low-dose scanning standard manufacturer-recommended protocols among different CBCT units.
Abstract Background To compare the diagnostic value of 120-kV with conventional 96-kV Cone-Beam CT (CBCT) temporal bone after cochlear implant (CI) surgery. Methods This retrospective study included CBCT scans CI surgery between 06/17 and 01/18. allowed examinations or 120-kV; other parameters were same. Two radiologists independently evaluated following criteria on 5-point Likert scales: osseous spiral lamina, inner outer wall, semi-circular canals, mastoid trabecular structure, overall...
Abstract The aim of the study was to estimate and compare effective doses in elbow region resulting from four different x‐ray imaging modalities. Absorbed organ were measured using 11 metal oxide field effect transistor (MOSFET) dosimeters that placed a custom‐made anthropomorphic RANDO phantom. Examinations performed Shimadzu FH‐21 HR radiography device, Siemens Sensation Open 24‐slice MSCT‐device, NewTom 5G CBCT Planmed Verity calculated according ICRP 103 recommendations. dose for...
Cone beam computed tomography (CBCT) images are being increasingly used to acquire three-dimensional (3D) models of the skull for additive manufacturing purposes. However, accuracy such remains a challenge, especially in orbital area. The aim this study is assess impact four different CBCT imaging positions on resulting 3D area.An anthropomorphic head phantom was manufactured by submerging dry human silicon mimic soft tissue attenuation and scattering properties head. scanned ProMax MAX...