If you made any changes in Pure these will be visible here soon.

Personal profile

Description of research and teaching

This page is not maintained since 5/2016.

My research interest are in the use of navigated transcranial magnetic stimulation (nTMS) in preoperative functional mappings and the quality assurance of clinical ultrasound examinations

 

My Ph.D. dissertation covered the use of nTMS in preoperative functional mappings for patients with epilepsy. In my thesis I described an nTMS mapping protocol suitable for clinical use and established the accuracy of motor cortical mappings by comparing the nTMS results with the results of direct electrical cortical stimulation. The accuracy was found to be sufficiently good for presurgical evaluation in patients with severe epilepsy. With this patient group, the nTMS technique enabled the mapping of abnormally excitable tissue, which bears an impact on the interpretation and reliability of the mappings as well.

 

In addition to the mapping of the primary motor cortical areas, the cortical areas related to speech are of key interest in the clinic. The methods for the reliable determination of the nTMS elicited speech-response latencies, their categorization and analysis, have been sparse. In the last part of this thesis, I developed a semi-automated algorithm for the speech-response latency difference calculation based on the accelerometer signal of the speech-response elicited vibrations of the larynx.

 

Based on the results presented in my thesis, nTMS is a reliable method for the mapping of the functional cortical areas pre-surgically in patients with severe epilepsy. It also enables the mapping of the abnormally excitable tissue. Permalink to my dissertation http://urn.fi/URN:ISBN:978-951-51-1575-1

 

 

In the field of ultrasound imaging I have concentrated on the quality assurance of the clinical ultrasound devices. During the past few years, research is focused on to studying the write-off reasons of clinical ultrasound transducers. A project for developing flow calibration to be used in clinical Doppler ultrasound QA, was established and the effort in this field is going to continue.

 

Teaching

* Lecturer, University of Helsinki, Department of Physics: Ultrasound examinations, 2016
* Lecturer, Helsinki Metropolia University of Applied Sciences & HUS Medical Imaging Center: Ultrasound for sonographers, 2016
* Co-lecturer, University of Helsinki, Department of Physics: Clinical physiology & neurophysiology, 2011
* Lecturer, Helsinki Stadia University of Applied Sciences, 2008  
* Part-time teacher at University of Helsinki, Department of Physics: Exercise assistant during autumn terms 2001, 2002, 2005: Physics Approbatur I, spring terms 2002 and 2006: Physics approbatur II. 

Curriculum vitae

Physicist. January 2012 -
Helsinki University Hospital, HUS Medical Imaging Center
Description of work: Coordination of technical quality control of ultrasound devices, research & development of comprehensive and cost effective quality assurance protocol for clinical ultrasound.

Education/Academic qualification

Physics, PhD, Department of Physics

Certified medical physicist

Physics, Lic.Phil., Department of Physics

Radiation protection officer

Physics, MSc, Department of Physics

External positions

Physicist, HUS Helsinki Medical Imaging Center

1 Jan 2012 → …

Keywords

  • 114 Physical sciences
  • navigated transcranial magnetic stimulation (nTMS)
  • medical image analysis
  • electrical cortical stimulation (ECS)
  • 3124 Neurology and psychiatry
  • epilepsy
  • motor cortex
  • cortical representations
  • localization
  • stroke
  • 3112 Neurosciences
  • Epilepsy
  • stroke

International and National Collaboration Publications and projects within past five years.

Publications 2005 2019

Magneettikuvauksen turvallisuus : riskien selvittäminen on moniammatillista yhteistyötä

Kaasalainen, T., Vitikainen, A-M. & Timonen, M., 2019, In : Radiografia.. 41, 1, p. 6-8 3 p.

Research output: Contribution to journalArticleProfessional

Protocol for motor and language mapping by navigated TMS in patients and healthy volunteers; workshop report

Krieg, S. M., Lioumis, P., Mäkelä, J. P., Wilenius, J., Karhu, J., Hannula, H., Savolainen, P., Lucas, C. W., Seidel, K., Laakso, A., Islam, M., Vaalto, S., Lehtinen, H., Vitikainen, A-M., Tarapore, P. E. & Picht, T., Jul 2017, In : Acta Neurochirurgica. 159, 7, p. 1187-1195 9 p.

Research output: Contribution to journalReview ArticleScientificpeer-review

Open Access
File

ROUTINE ULTRASOUND QUALITY ASSURANCE IN A MULTI-UNIT RADIOLOGY DEPARTMENT: A RETROSPECTIVE EVALUATION OF TRANSDUCER FAILURES

Vitikainen, A-M., Peltonen, J. I. & Vartiainen, E., Sep 2017, In : Ultrasound in Medicine & Biology. 43, 9, p. 1930-1937 8 p.

Research output: Contribution to journalArticleScientificpeer-review

Accelerometer-based automatic voice onset detection in speech mapping with navigated repetitive transcranial magnetic stimulation

Vitikainen, A-M., Mäkelä, E., Lioumis, P., Jousmäki, V. & Mäkelä, J. P., 2015, In : Journal of Neuroscience Methods. 253, p. 70-77 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Projects 2013 2013

Medical Physics in Clinical and Preclinical research

Savolainen, S., Kortesniemi, M., Sipilä, O., Kuronen, A., Airaksinen, A., Bergström, K., Heikkinen, S., Kosunen, A., Timonen, M., Salli, E., Uusi-Simola, J., Reijonen, V., Hippeläinen, E. T., Kuusela, L., Vitikainen, A., Ihalainen, T., Kaasalainen, T. T., Pitkonen, M., Turunen, S., Mäkelä, T. O. & Sairanen, V.

01/01/2013 → …

Project: Research project

File

Activities 2005 2015

  • 15 Organisation and participation in conferences, workshops, courses, seminars
  • 1 Supervision of other thesis (Master's, Licentiate)
  • 1 Membership or other role in research network
  • 1 Academic visit to other institution

Radiografiapäivät MMXV

Anne-Mari Vitikainen (Speaker: Presenter)
7 May 2015

Activity: Participating in or organising an event typesOrganisation and participation in conferences, workshops, courses, seminars

File

Quality Assurance of Ultrasound

Anne-Mari Vitikainen (Attendee)
11 Dec 2014

Activity: Participating in or organising an event typesOrganisation and participation in conferences, workshops, courses, seminars

Ultraäänen laadunvalvonta

Anne-Mari Vitikainen (Speaker: Presenter)
9 Oct 2014

Activity: Participating in or organising an event typesOrganisation and participation in conferences, workshops, courses, seminars

Radiografiapäivät MMXIII

Anne-Mari Vitikainen (Speaker: Presenter)
17 May 2013

Activity: Participating in or organising an event typesOrganisation and participation in conferences, workshops, courses, seminars

Radiografiapäivät MMXII

Anne-Mari Vitikainen (Speaker: Presenter)
3 May 2012

Activity: Participating in or organising an event typesOrganisation and participation in conferences, workshops, courses, seminars