Sarah S. Cabreros
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Sarah S. Cabreros has a total of 4 co-authors. Here are the top co-authors by number of shared publications:
- Allison M. Okamura
Department of Mechanical Engineering, Stanford University, Stanford, CA, USA
1 shared publication - Joseph D. Greer
Department of Mechanical Engineering, Stanford University, Stanford, CA, USA
1 shared publication - Nina M. Jimenez
Department of Mechanical Engineering, Stanford University, Stanford, CA, USA
1 shared publication - Troy K. Adebar
Department of Mechanical Engineering, Stanford University, Stanford, CA, USA
1 shared publication
Latest Publications
- 1 May 2015
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 2015, 2244-2249
Remote electromagnetic vibration of steerable needles for imaging in power Doppler ultrasound
Robotic needle steering systems for minimally invasive medical procedures require complementary medical imaging systems to track the needles in real time. Ultrasound is a promising imaging modality because it offers relatively low-cost, real-time imaging of the needle. Previous methods applied vibration to the base of the needle using a voice coil actuator, in order to make the needle visible in power Doppler ultrasound. We propose a new method for needle tip vibration, using electromagnetic actuation of small permanent magnets placed inside the needle to improve needle tip visibility in power Doppler imaging. Robotic needle insertion experiments using artificial tissue and ex vivo porcine liver showed that the electromagnetic tip vibration method can generate a stronger Doppler response compared to the previous base vibration method, resulting in better imaging at greater needle depth in tissue. It also eliminates previous issues with vibration damping along the shaft of the needle.
- 1 May 2015
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 2015, 2244-2249
Remote electromagnetic vibration of steerable needles for imaging in power Doppler ultrasound
Robotic needle steering systems for minimally invasive medical procedures require complementary medical imaging systems to track the needles in real time. Ultrasound is a promising imaging modality because it offers relatively low-cost, real-time imaging of the needle. Previous methods applied vibration to the base of the needle using a voice coil actuator, in order to make the needle visible in power Doppler ultrasound. We propose a new method for needle tip vibration, using electromagnetic actuation of small permanent magnets placed inside the needle to improve needle tip visibility in power Doppler imaging. Robotic needle insertion experiments using artificial tissue and ex vivo porcine liver showed that the electromagnetic tip vibration method can generate a stronger Doppler response compared to the previous base vibration method, resulting in better imaging at greater needle depth in tissue. It also eliminates previous issues with vibration damping along the shaft of the needle.