Hutchinson Marcy,  Kozak Brandi,  Ho-fung Victor,  Chauvin Nancy

Final Pr. ID: Poster #: EDU-015 (T)

Background:
Sonographic techniques are simple and safe. The utility and clinical value of dynamic sonographic evaluation of the glenohumeral joint in infants with brachial plexus injury (BPBI) has been described since the late 1990's. However, this technique remains an underutilized tool in most imaging practices. Brachial plexus injury during the birthing process can lead to glenoid dysplasia, posterior shoulder subluxation and significant morbidity if left untreated. Imaging evaluation of the degree of deformity is paramount to guide clinical treatment and the follow-up of complicated cases. Imaging techniques include MRI, CT and US. Shoulder ultrasound provides a dynamic, noninvasive method of evaluation. It has also been our experience that this imaging technique can be mastered by the Sonographer and supported with accurate interpretation by the Radiologist.

Purpose:
Describe the imaging features of glenohumeral joint dysplasia due to BPBI with emphasis on ultrasound technique.
Review step-by-step dynamic sonographic evaluation of the glenohumeral joint in BPBI with emphasis on correct positioning of the patient to ensure consistency and reproducible quality imaging.
Improve both confidence and independent evaluation of patients through this presentation by the sonographer. Read More

Authors:  Hutchinson Marcy , Kozak Brandi , Ho-fung Victor , Chauvin Nancy

Keywords:  glenohumeral, brachial plexus birth injury (BPBI)

Arellano Cameron,  Colon Rodney,  Hobollah Sarah,  Bhandari Prajwal,  Ghaghada Ketan,  Annapragada Ananth,  Badachhape Andrew

Final Pr. ID: Poster #: SCI-055

High T1 and T2 relaxivity macrocyclic gadolinium-based contrast agents (GBCAs), including gadopiclenol, have the potential to improve contrast-enhanced MRI while minimizing Gd dose. However, administered at low volumes in pediatric joint arthrography, the in vivo concentration of GBCA is variable due to pathological and anatomical volume differences. Concentration variations in conjunction with rapid T2 decay inherent to highly relaxive GBCAs can result in variable signal. To determine optimal dosages, we tested concentration-dependent signal changes in phantom studies with T1-weighted (T1w) and T2-weighted (T2w) sequences commonly used in clinical arthrogram studies. Read More

Authors:  Arellano Cameron , Colon Rodney , Hobollah Sarah , Bhandari Prajwal , Ghaghada Ketan , Annapragada Ananth , Badachhape Andrew

Keywords:  Arthrography, Contrast MRI, Glenohumeral