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Society for Pediatric Radiology – Poster Archive


Richard Towbin

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Showing 5 Abstracts.

Transcatheter Aortic Valve Replacement (TAVR) is widely becoming an accepted therapy for aortic stenosis. In the last 10 years, estimates place the deployment of TAVRs as high as 50,000 worldwide. Differences in size and morphology of the aortic root and surrounding anatomy are important considerations in determining which TAVR to deploy. 3D printing based off of patient images can be leveraged to create models for patient-specific surgical planning purposes. Read More

Meeting name: IPR 2016 Conjoint Meeting & Exhibition , 2016

Authors: Ryan Justin, Pophal Stephen, Aria David, Towbin Richard

Keywords: Transcatheter Aortic Valve Replacement (TAVR), 3D Printing

Educational simulators provide a means for students and experts to learn and refinesurgical skills. Our objective was to develop a cost-effective, patient-derived medical simulacrum for cerebral lateral ventriculostomy. Read More

Meeting name: IPR 2016 Conjoint Meeting & Exhibition , 2016

Authors: Ryan Justin, Pophal Stephen, Aria David, Towbin Richard

Keywords: 3D Printing, Anatomical Modeling, Ventriculostomy

In 2014, 3 patients including a 28-week preemie, 18 day-old neonate, and 11 month-old infant, were treated for large hepatic AVMs. Symptoms included CHF in both the 890-gram preemie and neonate and no symptoms in the infant with imaging revealing extensive shunting. Embolization of the AVMs was performed using various agents, entry sites, and arterial and venous techniques. Agents utilized included detachable and non-detachable coils and vascular plugs. Both direct puncture and intra-vascular techniques, including the use of the umbilical artery, were utilized. Immediate hospital course and short-term clinical and radiographic follow-up was conducted. Technical success was achieved in all 3 patients without immediate complications. The two symptomatic patients improved clinically on short-term follow up with resolution of the preemie’s and neonate’s CHF, confirmed on post-embolization imaging. Conventional angiography demonstrated complete resolution of the AVM in the infant. Read More

Meeting name: IPR 2016 Conjoint Meeting & Exhibition , 2016

Authors: Schaefer Carrie, Aria David, Beydoun Tammam, Kaye Robin, Towbin Richard

Keywords: Hepatic AVM, Venous Embolization

After reviewing the exhibit, participants will be able to recognize suspicious and non-suspicious ultrasound (US) features of pediatric thyroid nodules which will help to triage nodules that need a biopsy. Read More

Meeting name: IPR 2016 Conjoint Meeting & Exhibition , 2016

Authors: Biyyam Deepa, Patel Mittun, Dance Logan, Dao Tuan, Youssfi Mostafa, Towbin Richard

Keywords: thyroid, nodules, benign, malignant, biopsy

Accurate tumor measurement is essential in initial assessment of solid tumors. Furthermore, it is vital when evaluating treatment response. Change in tumor size determines whether a treatment course is effective, if treatment should be prolonged, or whether a more aggressive treatment or chemotherapy drug should be administered. Currently endorsed and widely used guidelines for tumor volume measurement include response evaluation criteria in solid tumors (RECIST), a one dimensional measure (cm) of target lesions which is not routinely the longest axis; World Health Organization (WHO), a 2 dimensional measure of the long and one short tumor axis (cm2) but is not a measure of volume; and Childrens Oncology Group (COG), a 3 dimensional ‘volume’ (cm3) measurement but does not account for shape of the tumor. Pediatric oncology patients are almost exclusively cared for in major academic or community hospital settings where modern CT and MR scanners routinely produce direct or reconstructed multiplanar images. Therefore an evolution of tumor measurement, to determine tumor volume, must be forthcoming. Read More

Meeting name: SPR 2017 Annual Meeting & Categorical Course , 2017

Authors: Willard Scott, Barnes Craig, Augustyn Robyn, Thorkelson Marrit, Chatfield Paige, Hu Harry, Towbin Richard, Bardo Dianna, Pfeifer Cory, Dance Logan, Bailey Smita, Southard Richard, Jorgensen Scott, Biyyam Deepa, Patel Mittun, Cassell Ian

Keywords: RECIST, WHO, COG