Search PubMed⌕ Search

Biomedical subjects

Norman E Bolus

Publications and source records attributed to Norman E Bolus.

3 recordsLinked to original sources

A nontraditional method of providing radiation protection instruction at a large health science center.

In the 4 quarter of 2001 the University of Alabama at Birmingham (UAB) converted its traditional classroom radiation safety course, taught exclusively in a classroom setting four times each year, to a combined online-classroom format in which the majority of the course is taught online. This change was instituted in an effort to minimize the time spent in the classroom for UAB research personnel. This format should provide the additional benefit of self-paced instruction for course participants. The hypothesis that the combined online/lecture format was as effective as the lecture-only format was tested. A statistical analysis was performed on the average first-attempt test scores of the tests (number of tests = 334) taken during a 2-y period before the online transition (average score = 75.5), and the average first-attempt test scores of the tests (number of tests = 359) taken during a 2-y period after the online transition (average score = 74.1.) A two-tailed Student's t-test was performed on the data. The t-value was 1.73, and P (T< or = t) was 0.083. At alpha = 0.05, the null hypothesis that the two averages are equal cannot be rejected. Thus the online course format appears to be as effective a method of radiation safety instruction as the more traditional, exclusively-classroom method of instruction. This article also reviews steps under consideration to improve the current online course to make it a more effective tool in radiation safety instruction.

Academic Medical Centers↗

Appendicitis imaging.

Classic symptoms of appendicitis include right lower quadrant pain on palpation, loss of appetite, nausea and vomiting. However, only about half of patients present with these characteristic symptoms. The remainder of patients must undergo some type of diagnostic study to verify or rule out appendicitis. This article describes the types of medical imaging that are used to evaluate possible appendicitis, including conventional abdominal radiography, ultrasound, computed tomography and nuclear medicine imaging.

Appendicitis↗

Pulmonary embolism imaging.

Sudden onset of shortness of breath and chest pain as well as a decreased oxygen level in the blood can be signs that a patient is experiencing a pulmonary embolic episode; however, a great many other conditions also can cause these signs and symptoms. If left undiagnosed and untreated, pulmonary embolism can be potentially fatal. This article describes types of medical imaging used to evaluate possible pulmonary embolism, including conventional chest radiographs, spiral computed tomography, magnetic resonance imaging and nuclear medicine lung ventilation and perfusion imaging.

Diagnostic Imaging↗