Simultaneous acquisition of ultrasound and Gamma signals with a single-channel readout

Muhammad Nasir Ullah, Yuseung Park, Gyeong Beom Kim, Chanho Kim, Chansun Park, Hojong Choi, Jung Yeol Yeom

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We propose an integrated front-end data acquisition circuit for a hybrid ultrasound (US)-gamma probe. The proposed circuit consists of three main parts: (1) a preamplifier for the gamma probe, (2) a preprocessing analog circuit for the US, and (3) a digitally controlled analog switch. By exploiting the long idle time of the US system, an analog switch can be used to acquire data of both systems using a single output channel simultaneously. On the nuclear medicine (NM) gamma probe side, energy resolutions of 18.4% and 17.5% were acquired with the standalone system and with the proposed switching circuit, respectively, when irradiated with a Co-57 radiation source. Similarly, signal-to-noise ratios of 14.89 and 13.12 dB were achieved when US echo signals were acquired with the standalone system and with the proposed switching circuit, respectively. Lastly, a combined US-gamma probe was used to scan a glass target and a sealed radiation source placed in a water tank. The results confirmed that, by using a hybrid US-gamma probe system, it is possible to distinguish between the two objects and acquire structural information (ultrasound) alongside molecular information (gamma radiation source).

Original languageEnglish
Article number1048
Pages (from-to)1-12
Number of pages12
JournalSensors (Switzerland)
Volume21
Issue number4
DOIs
Publication statusPublished - 2021 Feb 2

Keywords

  • Gamma probe
  • Hybrid systems
  • Nuclear medicine (NM)
  • Silicon photomultiplier (SiPM)
  • Ultrasound probe

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering

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