A Miniaturized 3-D-MRI Scanner Featuring an HV-SOI ASIC and Achieving a 10 × 8 × 8 mm3 Field of View
A Miniaturized 3-D-MRI Scanner Featuring an HV-SOI ASIC and Achieving a 10 × 8 × 8 mm3 Field of View
复制标题
具有 HV-SOI ASIC 并可实现 10 × 8 × 8 mm3 视场的小型 3-D-MRI 扫描仪
DOI:
10.1109/jssc.2022.3223215
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发表时间:
2023
影响因子:
5.4
通讯作者:
R. Martins
中科院分区:
文献类型:
--
作者:
Shuhao Fan;Qi Zhou;Ka;Pui;R. Martins
This article describes a miniaturized 3-D magnetic resonance imaging (3-D-MRI) scanner empowered by a high-voltage silicon-on-insulator (HV-SOI) CMOS application-specific integrated circuit (ASIC). With a 0.52-T permanent magnet and integrating the electronics onto a 6-mm<sup>2</sup> silicon chip, the scanner weighs 42 kg and provides a field of view (FOV) of 10 <inline-formula> <tex-math notation="LaTeX">$\times $ </tex-math></inline-formula> 8 <inline-formula> <tex-math notation="LaTeX">$\times $ </tex-math></inline-formula> 8 mm<sup>3</sup> for probing the internal structure of a wide variety of objects non-invasively. The ASIC features a mixed-transistor HV-enabled transmitter (TX) to enhance the output-current deliverability (1.24 <inline-formula> <tex-math notation="LaTeX">$\text{A}_{\mathrm {pp}}$ </tex-math></inline-formula> to a 1-<inline-formula> <tex-math notation="LaTeX">$\Omega $ </tex-math></inline-formula> load), a low-noise receiver (RX) exploiting the dynamic-threshold MOSFET (DTMOS), and deep trench isolation (DTI) for a better noise performance and substrate noise immunity. The achieved RX input-referred noise of 0.63 nV/<inline-formula> <tex-math notation="LaTeX">$\surd $ </tex-math></inline-formula>Hz significantly enhances the SNR of the image and enables fast image acquisition. We also introduce a digital-to-analog converter (DAC)-based gradient controller to compose the MRI sequences for 3-D spatial encoding. The key functionality of the 3-D-MRI scanner is exhibited with two fruit samples: raspberry and pomegranate, achieving a resolution of 110 <inline-formula> <tex-math notation="LaTeX">$\times $ </tex-math></inline-formula> 117 <inline-formula> <tex-math notation="LaTeX">$\times $ </tex-math></inline-formula> 250 <inline-formula> <tex-math notation="LaTeX">$\mu \text{m}^{3}$ </tex-math></inline-formula>, in 0.17 min.
影响因子:
10.6
作者:
Sharma, Saransh;Telikicherla, Aditya;Emami, Azita
通讯作者:
Emami, Azita
DOI:
10.1109/iscas.2017.8049753
发表时间:
2017
期刊:
2017 IEEE International Symposium on Circuits and Systems (ISCAS)
影响因子:
--
作者:
Handwerker J;Pérez-Rodas M;Ortmanns M;Scheffler K;Anders J
通讯作者:
Anders J
DOI:
10.1006/jmrb.1995.1112
发表时间:
1995-08-01
期刊:
JOURNAL OF MAGNETIC RESONANCE SERIES B
影响因子:
--
作者:
PECK, TL;MAGIN, RL;LAUTERBUR, PC
通讯作者:
LAUTERBUR, PC