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CompletedNCT02266459Updated Aug 11, 2015

Study to Evaluate Performance, Usability, Safety of Microwave Technology When Collecting Data From Patients With Stroke

An interventional study of Microwave technology (Medfield Diagnostics) in Stroke and Healthy, sponsored by Medfield Diagnostics. Completed at 3 sites in Sweden. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2015-08-11.

Sponsored by Medfield Diagnostics · Not applicable, Interventional, and Diagnostic

Phase
Not applicable
Study type
Interventional
Enrollment
165
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

This is a prospective, open, multicenter study that will enroll patients admitted to and hospitalized at the Stroke Unit due to diagnosed stroke and healthy volunteers.

The main purpose of the study is to evaluate the ability of the Microwave Technology to deliver adequate measurement data.

Read the detailed description

After written informed consent has been acquired a physical examination will be performed followed by confirmation of the inclusion/exclusion criteria. After subject enrollment the microwave measurement will be performed. The procedure will take approximately 15 minutes (the duration of the actual measurements is \< 1 minute) and will not interfere with the patient's standard of care at the Stroke Unit.

The measurement data will be evaluated for the presence of signal artifacts. The diagnostic ability of the device will be evaluated using a leave-one-out cross validation method with the CT diagnosis as ground truth. Microwave signals are sensitive to the dielectric parameters of the investigated object. In biological matter this is often related to amount of water. Brain tissue has different dielectric properties from blood. The physiological changes inside the brain that occurs as a result of a stroke will change the dielectric parameters.

02

Conditions studied

  • Stroke
  • Healthy

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03

In context

Stroke

7,286 studies on the registry are indexed under Stroke; 2,013 are open to participants now.

This study's enrollment of 165 is above the median of 50 across 5,366 interventional studies indexed under Stroke.

Browse Stroke studies →

Lead sponsor

This is the only study on the registry with Medfield Diagnostics as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

(Group A)

  • Signed Informed Consent Form
  • Patient diagnosed (by CT) with ischemic stroke, within 24 hours of stroke onset
  • Patient should be ≥ 18 years of age

(Group B)

  • Signed Informed Consent Form
  • Patient diagnosed (by CT) with hemorrhagic stroke, within 48 hours of stroke onset
  • Patient should be ≥ 18 years of age

(Group C)

  • Signed Informed Consent Form
  • Subject should be ≥ 18 years of age

Exclusion criteria

Exclusion Criteria:

(Group A+B)

  • Pregnant or nursing woman
  • Woman of child bearing potential and not taking adequate contraceptive precautions
  • Patient that has already received thrombolytic treatment
  • Patient participating in any other clinical study that could interfere with the result in the present study
  • Patient diagnosed with a condition associated with risk of poor protocol compliance
  • Any other condition or symptoms preventing the patient from entering the study, according to the investigator´s judgment
  • Any patient that according to the Declaration of Helsinki is deemed unsuitable for study enrollment

(Group C)

  • Pregnant or nursing woman
  • Woman of child bearing potential and not taking adequate contraceptive precautions
  • Subject participating in any other clinical study that could interfere with the result in the present study
  • Any other condition or symptoms preventing the subject from entering the study, according to the investigator´s judgment
  • Any subject that according to the Declaration of Helsinki is deemed unsuitable for study enrolment
05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
165 participants (actual)

Interventions

  • DeviceMicrowave technology (Medfield Diagnostics)

    A microwave measurement will be performed. The procedure will take approximately 15 minutes (the duration of the actual measurements is \< 1 minute) and will not interfere with the patient's standard of care at the Stroke Unit.

06

What researchers measure

Primary outcomes

  1. Ability to deliver adequate measurement data

    To confirm that the device will deliver adequate measurement data for at least 80 % of the patients diagnosed with Hemorrhagic stroke and Ischemic stroke

    Time frame: The procedure will take approximately 15 minutes

Secondary outcomes

  1. To confirm that the device will deliver adequate measurement data for at least 80 % of the healthy volunteers

    Time frame: The procedure will take approximately 15 minutes

  2. Mean time (± standard deviation) needed to complete the measurement procedure for group A + B + C

    Time frame: The procedure will take approximately 15 minutes

  3. To confirm the diagnostic ability of the device using a leave-one-out cross validation method

    Time frame: The procedure will take approximately 15 minutes

  4. Occurrence of adverse events

    Time frame: 24 hours

07

Study locations

3 sites
  • Strokeenheten, Södra Älvsborgs Sjukhus
    Borås, 501 82, Sweden
  • Sahlgrenska University Hospital/Sahlgrenska, Dept. of Neurology
    Göteborg, 41345, Sweden
  • Strokeenheten, Skaraborgs Sjukhus
    Skövde, 541 42, Sweden
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 11, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02266459
Lead sponsor
Medfield Diagnostics
Responsible party
Sponsor
First posted
Oct 17, 2014
Start date
Oct 2014
Primary completion
Jul 2015
Completion
Jul 2015
Last update
Aug 11, 2015

Study contacts

Jan-Erik Karlsson, MD, PhD
principal investigator · Sahlgrenska University hospital/Sahlgrenska, Dept. of Neurology

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Aug 2015. You cannot join it, but the record below documents what was studied.

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