An optoelectrical, standard cmos-based active catheter tracking system for MRI

Camli B., Sarioglu B., YALÇINKAYA A. D.

28th European Conference on Solid-State Transducers, EUROSENSORS 2014, Brescia, İtalya, 7 - 10 Eylül 2014, cilt.87, ss.1461-1464, (Tam Metin Bildiri) identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 87
  • Doi Numarası: 10.1016/j.proeng.2014.11.725
  • Basıldığı Şehir: Brescia
  • Basıldığı Ülke: İtalya
  • Sayfa Sayıları: ss.1461-1464
  • Anahtar Kelimeler: CMOS photodiode, Electromagnetic actuation, MRI, Optical MEMS, Optical powering
  • Boğaziçi Üniversitesi Adresli: Evet

Özet

A fully optical active catheter tracking system compatible with 3T MRI environment is presented. It replaces conducting cables with optical fibers to reduce RF-induced heating problem. Proposed system consists of a MEMS-based microstructure array and an IC driving it. The IC houses an RF receiver block and an optoelectrical power supply. A prototype IC was fabricated in UMC 0.18μm CMOS process. Measurements indicate that the supply unit is able to provide 2.18mA at 1.2V supply, when a laser beam of 80mW power at its source is applied to IC. The system is operational at laser source power levels above 40mW.