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

Study Overview
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Brief Summary
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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.

Detailed Description
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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.

Official Title
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A Prospective, Open, Multicenter Study to Evaluate the Performance, Safety and Usability of the Microwave Technology Developed by Medfield Diagnostics When Collecting Measurement Data From Patients With Clinical Signs of Stroke.

Conditions
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Stroke, Healthy

Intervention / Treatment
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* Device: Microwave technology (Medfield Diagnostics)


Participation Criteria
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Eligibility Criteria
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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: (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

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Intervention/Treatment |
| --- |
|Device: Microwave 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.|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| 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 | The procedure will take approximately 15 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| To confirm that the device will deliver adequate measurement data for at least 80 % of the healthy volunteers |  | The procedure will take approximately 15 minutes | 
| Mean time (± standard deviation) needed to complete the measurement procedure for group A + B + C |  | The procedure will take approximately 15 minutes | 
| To confirm the diagnostic ability of the device using a leave-one-out cross validation method |  | The procedure will take approximately 15 minutes | 
| Occurrence of adverse events |  | 24 hours |