Real-Time Hand-Held Ultrasound Medical-Imaging Device Based on a New Digital Quadrature Demodulation Processor

2009 ◽  
Vol 56 (8) ◽  
pp. 1654-1665 ◽  
Author(s):  
P. Levesque ◽  
M. Sawan
Keyword(s):  
Medical Imaging ◽  
Real Time ◽  
Imaging Device ◽  
Quadrature Demodulation

scholarly journals Design, Development, and Multi-Characterization of an Integrated Clinical Transrectal Ultrasound and Photoacoustic Device for Human Prostate Imaging

Diagnostics ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 566 ◽  
Author(s):  
Sumit Agrawal ◽  
Kerrick Johnstonbaugh ◽  
Joseph Y. Clark ◽  
Jay D. Raman ◽  
Xueding Wang ◽  
...  
Keyword(s):  
Real Time ◽  
Needle Biopsy ◽  
Imaging Modality ◽  
Experimental Studies ◽  
Transrectal Ultrasound ◽  
Human Prostate ◽  
Design Development ◽  
Imaging Device ◽  
Prostate Imaging ◽  
Clinically Significant

The standard diagnostic procedure for prostate cancer (PCa) is transrectal ultrasound (TRUS)-guided needle biopsy. However, due to the low sensitivity of TRUS to cancerous tissue in the prostate, small yet clinically significant tumors can be missed. Magnetic resonance imaging (MRI) with TRUS fusion biopsy has recently been introduced as a way to improve the identification of clinically significant PCa in men. However, the spatial errors in coregistering the preprocedural MRI with the real-time TRUS causes false negatives. A real-time and intraprocedural imaging modality that can sensitively detect PCa tumors and, more importantly, differentiate aggressive from nonaggressive tumors could largely improve the guidance of biopsy sampling to improve diagnostic accuracy and patient risk stratification. In this work, we seek to fill this long-standing gap in clinical diagnosis of PCa via the development of a dual-modality imaging device that integrates the emerging photoacoustic imaging (PAI) technique with the established TRUS for improved guidance of PCa needle biopsy. Unlike previously published studies on the integration of TRUS with PAI capabilities, this work introduces a novel approach for integrating a focused light delivery mechanism with a clinical-grade commercial TRUS probe, while assuring much-needed ease of operation in the transrectal space. We further present the clinical potential of our device by (i) performing rigorous characterization studies, (ii) examining the acoustic and optical safety parameters for human prostate imaging, and (iii) demonstrating the structural and functional imaging capabilities using deep-tissue-mimicking phantoms. Our TRUSPA experimental studies demonstrated a field-of-view in the range of 130 to 150 degrees and spatial resolutions in the range of 300 μm to 400 μm at a soft tissue imaging depth of 5 cm.

scholarly journals Verification of MLC based real-time tumor tracking using an electronic portal imaging device

2010 ◽  
Vol 37 (6Part1) ◽  
pp. 2435-2440 ◽  
Author(s):  
Sarah Han-Oh ◽  
Byong Yong Yi ◽  
Fritz Lerma ◽  
Barry L. Berman ◽  
Minzhi Gui ◽  
...  
Keyword(s):  
Real Time ◽  
Electronic Portal Imaging Device ◽  
Imaging Device ◽  
Portal Imaging ◽  
Electronic Portal Imaging ◽  
Tumor Tracking

Real time motion analysis in 4D medical imaging using conditional density propagation

2013 ◽  
Author(s):  
Johannes Lotz ◽  
Bernd Fischer ◽  
Janine Olesch ◽  
Matthias Günther
Keyword(s):  
Medical Imaging ◽  
Real Time ◽  
Motion Analysis ◽  
Conditional Density ◽  
Time Motion
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