David Nickels

Core curriculum illustration: necrotizing pneumonia and empyema

This is the 18th installment of a series that will highlight one case per publication issue from the bank of cases available online as part of the American Society of Emergency Radiology (ASER) educational resources. Our goal is to generate more interest in and use of our online materials. To view more cases online please visit the ASER Core Curriculum and Recommendations for Study online at: http://www.erad.org/?page=CCIP_TOC.

Core curriculum illustration: traumatic atlanto-occipital dislocation

This is the 20th installment of a series that will highlight one case per publication issue from the bank of cases available online as part of the American Society of Emergency Radiology (ASER) educational resources. Our goal is to generate more interest in and use of our online materials. To view more cases online, please visit the ASER Core Curriculum and Recommendations for Study online at: http://www.aseronline.org/curriculum/toc.htm.

Core curriculum illustration: brain–subdural hemorrhage in non-accidental trauma

This is the 19 installment of a series that will highlight one case per publication issue from the bank of cases available online as part of the American Society of Emergency Radiology (ASER) educational resources. Our goal is to generate more interest in and use of our online materials. To view more cases online, please visit the ASER Core Curriculum and Recommendations for Study online at: http://www.aseronline.org/curriculum/toc.htm.

Core curriculum illustration: isolated fracture of the greater trochanter

This is the 12th installment of a series that will highlight one case per publication issue from the bank of cases available online as part of the American Society of Emergency Radiology (ASER) educational resources. Our goal is to generate more interest in and use of our online materials. To view more cases online, please visit the ASER Core Curriculum and Recommendations for Study online at: http://www.aseronline.org/curriculum/toc.htm..

Core curriculum illustration: ovarian torsion.

This is the tenth installment of a series that will highlight one case per publication issue from the bank of cases available online as part of the American Society of Emergency Radiology (ASER) educational resources.

Core curriculum illustration: cerebral venous thrombosis.

This is the fifth installment of a series that will highlight one case per publication issue from the bank of cases available online as part of the American Society of Emergency Radiology (ASER) educational resources. Our goal is to generate more interest in and use of our online materials. To view more cases online, please visit the ASER Core Curriculum and Recommendations for Study online at http://www. aseronline.org/curriculum/toc.htm .

Core curriculum illustration: blunt traumatic mesenteric injury

Initial CT images with intravenous contrast show a left upper quadrant mesenteric hematoma containing a small focus of high attenuation which is similar in attenuation to that of the aorta, raising suspicion for active vascular contrast extravasation (Figs. 1 and 2). Delayed CT imaging (approximately 3 min following initial imaging) through the mesenteric hematoma shows change in appearance of the high-attenuation focus with an increase in size, a decrease in attenuation, and a change in shape between initial and delayed images (Fig. 3). These findings are diagnostic of active vascular contrast extravasation. Laparotomy showed a mesenteric tear with active bleeding. Discussion

Imaging of Blunt and Penetrating Abdominal Trauma

Trauma is the leading cause of morbidity and mortality among people younger than 45 years of age. Traumatic injury to the abdominal organs, with ensuing exsanguination, is the primary cause of death. Of all abdominal traumatic injuries presenting to hospitals, blunt trauma comprises approximately 90 % and typically results from a motor vehicle collision or a fall. Penetrating trauma accounts for the remaining 10 % and is often a result of a bullet or knife injury. The evaluation of blunt or penetrating abdominal trauma can be one of the most challenging and resource-exhaustive aspects of acute trauma care.

Core curriculum illustration: subperiosteal abscess in an adult.

This is the third installment of a series that will highlight one case per publication issue from the bank of cases available online as part of the American Society of Emergency Radiology (ASER) educational resources. Our goal is to generate more interest in and use of our online materials. To view more cases online, please visit the ASER Core Curriculum and Recommendations for Study online at http://www. aseronline.org/curriculum/toc.htm.

Core curriculum illustration: pneumothorax

This is the fourth installment of a series that will highlight one case per publication issue from the bank of cases available online as part of the American Society of Emergency Radiology (ASER) educational resources. Our goal is to generate more interest in and use of our online materials. To view more cases online, please visit the ASER Core Curriculum and Recommendations for Study online at http://www.aseronline.org/curriculum/toc.htm.