Chew Lay Ee,  Tan Timothy Shao Ern

Final Pr. ID: Poster #: SCI-046

Nutcracker syndrome (NCS) results from left renal vein (LRV) compression, typically between the abdominal aorta and superior mesenteric artery. The use of ultrasonography (US) to aid in diagnosis can be challenging due to the dynamic nature of the nutcracker phenomenon (NCP) and variability of symptoms, which can fluctuate with changes in patient posture and respiration. Moreover, defining a reliable Doppler threshold in children remains underexplored. This study explores the added utility of Doppler peak systolic velocity (PSV) ratio to LRV diameters in the evaluation of suspected NCS. Read More

Authors:  Chew Lay Ee , Tan Timothy Shao Ern

Keywords:  Nutcracker Syndrome, Doppler US, Kidneys

Wilke Forrest,  Takahashi Marcelo S,  Chen Joshua,  Pryor William

Final Pr. ID: Poster #: SCI-044

Develop a simple logistic model using only ultrasound report text to predict testicular torsion in 8–18-year-olds when Doppler is inconclusive. Read More

Authors:  Wilke Forrest , Takahashi Marcelo S , Chen Joshua , Pryor William

Keywords:  Ultrasound, Doppler US, Scrotum

Juang Eric,  Giersch Kristie,  Katz Danielle,  Annam Aparna,  Tutman Jeffrey,  Zavaletta Vaz

Final Pr. ID: Poster #: EDU-049

The purpose of this educational presentation is to delve into the physics of Microvascular Flow Imaging (MVFi) and showcase its significance in the imaging of pediatric vascular anomalies. MVFi complements grayscale and traditional color or power Doppler imaging of vascular malformations.

MVFi is an advanced Doppler ultrasound technique that excels in detecting slow blood flow in smaller vessels and capillaries without the use of a contrast agent. Different vendors utilize proprietary MVFi algorithms to isolate the slow flow signal from tissue artifacts and enhance spatial resolution. However, MVFi algorithms are susceptible to motion and flash artifacts, which can be challenging in young children. Nevertheless, in the appropriate setting, MVFi enables improved delineation of slow-flow lesions through the detection of intravascular slow flow, which may be located in the lesion or in the surrounding tissues.

MVFi can play a vital role in monitoring residual or recurrent disease following intervention. In this work, we will explore the physics through case presentations to illustrate the combined use of MVFi with grayscale and conventional Power Doppler in diagnosing and managing pediatric vascular anomalies with slow flow. Read More

Authors:  Juang Eric , Giersch Kristie , Katz Danielle , Annam Aparna , Tutman Jeffrey , Zavaletta Vaz

Keywords:  Vascular Anomalies, Vascular Imaging, Doppler US