Official Proceedings - AIUM

American Institute of Ultrasound in Medicine Proceedings J Ultrasound Med 32(suppl):S1–S134, 20131539668 A Committee Structure for Improved Efficacy of a StudentUltrasound Interest GroupKatherine Pollard,* Emily Hoover, David Bahner EmergencyMedicine, Ohio State University College of Medicine, Columbus,Ohio USAObjectives—To assess the impact of a new committee structureon the efficacy of a student ultrasound interest group.Methods—Our institution has a well-established student-runultrasound interest group. Since its founding, the interest group has servedas a central organizing body for all ultrasound educational activities. Theultrasound interest group has traditionally been led by a group of 4 secondandfourth-year medical student officers and a faculty advisor. During thisacademic year, a new committee structure was developed to provide moreopportunities for medical student involvement within ultrasound leadershipand to improve the ability of the interest group to support ultrasoundeducation initiatives. Six committees were formed focusing on medicalstudent education, resident/fellow/faculty education, outreach, research,grants/funding, and technology.Results—The initial development of the committee structureallowed the ultrasound interest group to better define its core goals andvalues. The committee structure has also provided opportunities for approximately30 medical students (currently 15 first-year, 5 second-year, 1third-year, and 7 fourth-year students) to take new leadership roles withinour ultrasound education program while decreasing the burden on the officersand advisor. The committee structure has improved ultrasound educationin numerous ways. Examples of this improvement include formingnew connections with ultrasound advocates within our institution, expandingthe ultrasound interest group’s online presence, and identifyingnew student research funding opportunities.Conclusions—The implementation of a new committee structurefor our student ultrasound interest group has greatly improved theability of our interest group to educate medical students, residents, andfaculty on the applications of and techniques involved in performing bedsideultrasonography.1539712 Sonographic Characterization of PilomatrixomasXimena Wortsman, 1 * Nelson Lobos 2 1 Radiology, Dermatology,Clinica Servet, Faculty of Medicine, 2 Health Sciences, Universityof Chile, Santiago, ChileObjectives—To assess the sonographic morphology of pilomatrixomas.Methods—A retrospective review of pilomatrixomas that weresonographically diagnosed and confirmed by histology (September 2009–July 2012) was performed. Extension in all axes, location, blood flow,deeper-layer involvement, and calcium deposits were analyzed.Results—A total of 118 pilomatrixomas in 107 patients wereanalyzed. Mean age: 17 years (age range, 5 months–82 years). Number oflesions per patient: 1 lesion, 93.4% (n = 100); 2 lesions, 4.6% (n = 5); 3lesions, 0.9% (n = 1); 4 lesions, 0.9% (n = 1). Location of lesions: face,55.1% (n = 65); upper extremity, 17.8% (n = 21); neck, 10.2% (n = 12);lower extremity, 9.3% (n = 11); trunk, 7.6% (n = 9). Layer location of lesions:dermis and hypodermis, 66% (n = 78); only hypodermis, 31% (n =36); only dermis, 3% (n = 4). Echo structure: hypoechoic rim and hyperechoiccenter, 68,8% (n = 81); hyperechoic, 18.6% (n = 22); heterogeneous,7.6% (n = 9); hypoechoic, 5% (n = 6). Mean size: transverse axis,6.32 mm (range, 0.5–19 mm); depth, 3.81 mm (range, 0.3–12 mm); longitudinalaxis, 6.22 mm (range, 0.5–19 mm). Mean volume: 187.32 cm 3(range, 0.07–2148.44 cm 3 ). Calcium deposits were present in 90% (n =106), and anechoic areas (cystic variant) were detected in 4% (n = 5) oflesions. A posterior acoustic shadowing artifact was present in 24.6%(n = 29) of lesions. Inner septa were observed in 1% (n = 1) of tumors.Blood flow was detected in 66% (n = 78), and 96% of these cases showedmaximum arterial peak systolic velocity