HealthDay News – Portable low-field magnetic resonance imaging (pMRI) has a sensitivity of 80.4 percent for detecting intracerebral hemorrhages (ICHs), according to a study published online in Nature Communications on Aug. 25.
Mercy H. Mazurek of the Yale School of Medicine in New Haven, Connecticut and colleagues investigated the use of low-field MRI (0.064T) to assess ICH. From July 2018 to November 2020, the patients were presented with conventional neuroimaging (without contrast agent computed tomography or 1.5 / 3 T MRI) or pMRI imaging. A total of 144 pMRI examinations (56 ICH, 48 acute ischemic stroke and 40 healthy controls) were carried out by two neuroradiologists; Cases of disagreement were reviewed by an ICH imaging core laboratory researcher.
The researchers found that ICH was correctly detected in 45 of 56 cases (80.4 percent sensitivity). Blood-negative cases were identified in 85 of 88 cases (96.6 percent specificity). There was an association between manually segmented hematoma volumes and ABC / 2 estimated volumes on pMRI with conventional imaging volume. For manual and ABC / 2 volumes, pMRI measured hematoma volumes were associated with the National Institutes of Health stroke scale and clinical outcome at discharge.
“There’s no question that this device can help save lives in resource-constrained environments like rural hospitals or developing countries,” a co-author said in a statement. “It is critical to continue to collect more data on a range of stroke characteristics so that we can maximize the potential benefits of this approach.”
Several authors disclosed financial ties to the biopharmaceutical and medical device industries, including Hyperfine Research, which partially funded the study.
Summary / full text
Cerebral hemorrhage stroke