Medical Student Education Roadblock Due to COVID-19: Virtual Radiology Core Clerkship to the Rescue.

Rationale And Objectives: Medical schools were upended by the COVID-19 pandemic, resulting in suspension of all in-person educational activities, and leaving clinical clerkships on hold indefinitely. A virtual curriculum and novel teaching methods were needed to fulfill curricular requirements. We developed a comprehensive virtual radiology clerkship and evaluated the efficacy of this novel method of teaching.

A Primer on Computed Tomography Perfusion Imaging for the Emergency Physician.

Background: Brain noncontrast computed tomography (CT), CT angiography, and magnetic resonance imaging have been used clinically for decades, and emergency physicians have a good understanding of their indications, the meaning of their results, and some facility with the interpretation of CT. However, brain CT perfusion (CTP) is relatively new and emergency physicians are less familiar with its basic concepts, indications, and role in managing patients with neurological emergencies.

Objective: We will review the parameters of clinical interest on a CTP report, and how to incorporate them into clinical decision-making.

Nasopharyngeal cystic lesions: Tornwaldt and mucous retention cysts of the nasopharynx: findings on MR imaging.

Objective: Nasopharyngeal cystic lesions are commonly encountered on magnetic resonance imaging with significantly overlapped imaging characteristics. The purpose of this study was to determine the prevalence and distinguishing imaging features of cystic lesions in the nasopharynx in the largest patient series to date.

Methods: After institutional review board approval, consecutive head magnetic resonance images of 3000 patients performed at 1.

Craniofacial bone infarcts in sickle cell disease: clinical and radiological manifestations.

Objective: To investigate the clinicoradiological manifestations of craniofacial bone infarcts in patients with sickle cell disease (SCD).

Materials And Methods: After institutional review board approval, we identified 85 SCD patients who underwent head and neck magnetic resonance imaging (MRI) during a period of 5 years (January 1, 2004-December 31, 2008) and reviewed their clinical presentations and radiological findings.

Results: Of 40 subjects with headache or facial pain, 6 (5 males, 1 female; age range, 2-22 years; 5 Hb SS, 1 Hb SC) were diagnosed with acute bone infarct by MRI.

Clinical and radiologic manifestations of sickle cell disease in the head and neck.

Sickle cell disease is a common inherited blood disorder that is characterized by the presence of sickle-shaped red blood cells. The clinical manifestations of sickle cell disease vary, but they may be attributed to three mechanisms: vaso-occlusion, chronic hemolytic anemia, and infection. The imaging appearances of central nervous system and musculoskeletal involvement by sickle cell disease have been well documented; however, involvement in the head and neck often is underappreciated, although it is not uncommon.