About this trial
This study evaluates the accuracy and feasibility of a portable low-field MRI (Hyperfine) device in patients presenting to the emergency department with suspected acute stroke. All enrolled patients undergo standard clinical imaging (CT, CT angiography, CT perfusion) and additionally receive a low-field MRI scan. Low-field MRI findings are compared to routine CT imaging and final clinical diagnosis. The study aims to determine whether low-field MRI can reliably detect acute ischemic stroke (including lacunar and large vessel occlusion), hemorrhagic stroke, and stroke mimics in the acute setting. Secondary outcomes include feasibility measures such as scan time, completion rate, patient satisfaction, and adverse events.
Eligibility criteria
Qualifiers
Age ≥ 18 years
Presentation with suspected acute stroke (stroke code activation by ambulance paramedics)
Symptom onset < 12 hours prior to presentation
Admission to the emergency department of the Leiden University Medical Center (LUMC) during office hours
Disqualifiers
Imminent death
Severe claustrophobia preventing MRI
Presence of MRI-incompatible implanted devices (e.g., pacemaker, cochlear implant, insulin pump)
Known intra-ocular metallic foreign body or intracranial metallic clip/device identified on admission CT
Trial design
Treatments tested in this trial
- Low-field MRI