Search for dissertations about: "medical device registration"

Found 4 swedish dissertations containing the words medical device registration.

2. 1. On-scalp MEG using high-Tc SQUIDs: Measuring brain activity with superconducting magnetometers

   Author : Christoph Pfeiffer; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; high-Tc SQUID; neuroimaging; magnetoencephalography; localization; on-scalp MEG; sensor array; magnetometer;

   Abstract : This thesis describes work done towards realizing on-scalp magnetoencephalography (MEG) based on high critical temperature (high- T c) superconducting quantum interference device (SQUID) sensors. MEG is a non-invasive neuroimaging modality that records the magnetic fields produced by neural currents with good spatial and high temporal resolution. READ MORE

4. 2. Beta Camera: Development and applications

   Author : Kaj Ljunggren; Lund Medicinsk strålningsfysik; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Klinisk fysiologi; radiologi; tomografi; medicinsk instrumentering; medical instrumentation; tomography; radiology; Clinical physics; microchannel plate; radionuclides; scintillator; autoradiography; Beta Camera;

   Abstract : A new detector for on-line digital detection of charged particles (beta-particles, conversion electrons and alpha-particles) from thin samples for rapid autoradiography has been developed; the Beta Camera. The device consists of a photon-sensitive detector (image photon detector, IPD); the main component of which is a microchannel plate. READ MORE

5. 3. Fixed mandibular retainers : a controlled 12-year follow-up

   Author : Ulrike Schütz-Fransson; Malmö universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Irregularity Index; Long-term stability; Relapse; Orthodontic retainers; Adolescent; Child; Device Removal; Female; Follow-Up Studies; Humans; Incisor; Male; Malocclusion; Mandible; Orthodontic Retainers; Recurrence; Risk Factors; Treatment Outcome;

   Abstract : Fixed retainer after orthodontic treatment is an increasing retention appliance. For the mandibular incisors there are two different fixed retainers that are commonly used, either a canine-to-canine retainer bonded only to the canines or a twistflex retainer bonded to each of the mandibular incisors and canines. READ MORE

6. 4. Clinical and quality aspects of native and transplant kidney biopsies in Sweden

   Author : Björn Peters; Bernd Stegmayr; Ingela Fehrman-Ekholm; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Native and transplant kidney biopsies; biopsy complications; risk factors; patients’ safety; biopsy needles; Resistive Index; IgA-nephritis.; Internal Medicine; invärtesmedicin;

   Abstract : Percutaneous kidney biopsies have been performed since 1944 to establish diagnoses and treatment. Risk factors based on a limited amount of data have shown age, blood pressure, kidney function and needle size as some risk factors for biopsy complications. READ MORE