Vertebral Hemangiomas: Prevalence, new classification and natural history. magnetic resonance imaging-based retrospective longitudinal study.

Background And Purpose: To determine the prevalence of vertebral hemangiomas (VHs), establish a new classification of VHs based on their MRI-signal pattern, and study their natural history.

Methods: MRI of 1000 consecutive patients who underwent at least two MRI with an interval of at least 3 years. Growth rate and change of MRI-signal pattern during the follow-up period were the parameters included in studying the natural history of VHs.

Swirl sign in intracerebral haemorrhage: definition, prevalence, reliability and prognostic value.

Background: Swirl sign has previously been described in epidural hematomas as areas of low attenuation, radiolucency or irregular density. The aims of this study were to describe swirl sign in ICH, study its prevalence, study the reliability of the subjective evaluation on computed tomography (CT), and to explore its prognostic value.

Methods: CTs of 203 patients with ICH were retrospectively evaluated for the presence of swirl sign.

Prognosis of aphasia in stroke patients early after iv thrombolysis.

Objective: Stroke patients with aphasia have a high long-term morbidity. Intravenous rt-PA (iv) thrombolysis is given more deliberately to these patients. Early outcome data is lacking.

Early do-not-resuscitate orders in intracerebral haemorrhage; frequency and predictive value for death and functional outcome. A retrospective cohort study.

Introduction: In former studies from North America early Do-Not-Resuscitate orders (DNR orders) in patients with intracerebral haemorrhage (ICH) had negative prognostic impact on mortality. The influence of DNR orders on functional outcome and whether DNR orders are grounded on relevant patient characteristics is unknown. We aimed to determine the frequency and predictive factors of DNR-orders and its association to prognosis, in ICH patients, in Scandinavia.

Spinal epidural lipomatosis: a common imaging feature in Scheuermann disease.

Study Design: Retrospective study.

Objectives: To find out if spinal epidural lipomatosis (SEL) occurs more commonly among patients with Scheuermann disease than in the general population.

Summary And Background: On the basis of our own radiologic and operative observation, SEL seems to occur frequently in patients with Scheuermann disease.

Optimization of radiation exposure and image quality of the cone-beam O-arm intraoperative imaging system in spinal surgery.

Study Design: Retrospective study.

Objectives: To optimize the radiation doses and image quality for the cone-beam O-arm surgical imaging system in spinal surgery.

Summary Of Background: Neurovascular compromise has been reported after screw misplacement during thoracic pedicle screw insertion.

Hyperdense middle cerebral artery sign in multidetector computed tomography: definition, occurrence, and reliability analysis.

Background: The hyperdense middle cerebral artery sign (HMCAS) is one of the early changes seen on the computed tomography in acute ischemic stroke of MCA territory.

Aims: To evaluate the reliability of subjective evaluation of HMCAS on CT performed at multidetector CT (MDCT) and evaluated in the Picture Archiving Communication Systems, to define objective criteria for HMCAS and to find out if there are any predictors for the occurrence of HMCAS.

Materials And Methods: CTs of 121 consecutive patients (mean age of 70 years) treated with thrombolytic therapy were retrospectively evaluated by two neuroradiologists both subjectively and objectively with respect to HMCAS.