Tang Elizabeth,  Menashe Sarah,  Romberg Erin,  Perez Francisco,  Otjen Jeffrey

Final Pr. ID: Poster #: EDU-070

CT with 4D cine imaging can non-invasively and dynamically characterize airways for various pathologies, such as airway caliber fluctuations in tracheobronchomalacia, intermittent compression by cardiovascular or other mediastinal structures, or constriction from anatomic anomalies like those associated with craniofacial syndromes. However, optimal interpretation of dynamic airway CT studies requires an understanding of the impact of such extrinsic factors as the presence of support apparatus (e.g., endotracheal tube, enteric tube), level of required respiratory support (e.g., positive end-expiratory pressure), and differences in positioning (e.g., with jaw thrust). We have performed more than 100 pediatric cases of dynamic airway CT under a variety of conditions, in patients who range from free-breathing to ventilator-dependent, and for a variety of pathologies. In this educational exhibit, we will consider how to balance and tailor extrinsic factors when using dynamic CT for the guidance of airway management, in order to meet diagnostic considerations and supplement other cardiopulmonary investigations, including cases with bronchoscopic and surgical correlates. Read More

Authors:  Tang Elizabeth , Menashe Sarah , Romberg Erin , Perez Francisco , Otjen Jeffrey

Keywords:  Airway, Cine, CT

Krishnamurthy Ramkumar,  Liu Yingmin,  Hu Houchun,  Krishnamurthy Rajesh,  Hor Kan,  Ahmad Rizwan

Final Pr. ID: Poster #: SCI-003

Conventional cardiac MRI (CMR) acquisitions in children are limited by long acquisition time, need for sedation, and an inefficient workflow. A conventional cine SSFP short-axis stack typically takes 5-7 minutes to complete and is ineffective for subjects with arrhythmias. Available alternatives like free-breathing, real-time cine (RT-cine) SSFP have suboptimal temporal and spatial resolution. Recent advances in compressed sensing (CS) MRI techniques may overcome this limitation. We hypothesize that a CS-based approach will allow the scan time for a short axis RT-cine stack to be shortened to less than a minute without compromising spatial or temporal resolution. Read More

Authors:  Krishnamurthy Ramkumar , Liu Yingmin , Hu Houchun , Krishnamurthy Rajesh , Hor Kan , Ahmad Rizwan

Keywords:  COmpressed Sensing, Cine, MRI