News | Ultrasound Imaging | December 13, 2016

Japanese Scientists Develop Wearable Terahertz Scanning Device

Portable device uses carbon nanotubes to better image three-dimensional objects

terahertz imaging, wearable scanning device, Tokyo Institute of Technology, Nature Photonics

Terahertz imaging of a human hand using arrays of carbon nanotubes: (left) human hand inserted into the imaging device, and (right) resulting scan of the human hand.

December 13, 2016 — Scientists at Tokyo Institute of Technology have developed a portable and wearable terahertz scanning device for non-invasive inspection of three-dimensional objects. The device is made using arrays of carbon nanotubes and does not require bulky peripheral optical components.

The device is expected to have wide-ranging applications including the noninvasive inspections of medical and drug delivery equipment such as syringes, as well as in medicine for imaging cancer cells, blood clots, sweat glands and teeth. The findings are published in the November 2016 issue of Nature Photonics.

Imaging devices based on terahertz waves show promise for noninvasive inspection of solid objects and soft tissue of the human body. However, terahertz waves have difficulty in imaging and reproducing the curved contours of three-dimensional objects. Furthermore, terahertz devices currently used for whole-body scans at airports must rotate 360 degrees around the human body, and thus they are large, bulky and not portable. In addition, the materials used to fabricate conventional terahertz systems are not flexible, and the terahertz detectors must be cooled in order to achieve high detection sensitivity.

Therefore, researchers are constantly searching for ways of producing terahertz imaging systems that are portable, flexible and operate efficiently at room temperature. To address these challenges, Yukio Kawano and colleagues at the Laboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of Technology, have demonstrated a terahertz imaging device fabricated with arrays of carbon nanotubes (CNT). Notably, CNTs have previously been used for the fabrication of photodetectors that operate in the visible, infrared and terahertz regions of the electromagnetic spectrum.

The Tokyo Tech team fabricated a flexible, wide-band terahertz scanner by integrating 23 CNT detector elements into a single array. The mechanical strength of the CNT film used in the detector enabled it to be readily bent over a wide range of angles, unlike conventional semiconductor materials that are fragile and break under stress. Importantly, the CNT films also absorb electromagnetic radiation over a broad terahertz range, which eliminates the need for planar antennas to scan objects. The terahertz scanner developed by Kawano and his team was successfully used for active imaging of flat and curved samples; multiview scanning of cylindrical samples; and passive wearable imaging of a human hand.

In the future, the research team expects that the applications of their terahertz scanner will enhance the capability of noninvasive inspections in pharmaceutics, food quality control and medical monitoring. These applications are possible because the terahertz scanner is wearable, portable, and can scan 3-D objects without requiring complex optics or equipment.

For more information: www.nature.com/nphoton

Related Content

SuperSonic Imagine Introduces Aixplorer Mach 30 Ultrasound at The Liver Meeting
Technology | Ultrasound Imaging | November 14, 2018
SuperSonic Imagine recently exhibited at The Liver Meeting, held Nov. 9-13 in San Francisco, where the company...
Researchers Awarded 2018 Canon Medical Systems USA/RSNA Research Grants
News | Radiology Imaging | November 13, 2018
The Radiological Society of North America (RSNA) Research & Education (R&E) Foundation recently announced the...
New Robotic Arm System Optimizes Testing of Ultrasound Probes

Image courtesy of Esaote

News | Ultrasound Imaging | November 09, 2018
Medical imaging company Esaote and The BioRobotics Institute of Scuola Superiore Sant’Anna in Pisa, Italy, have...
Charles Ananian, M.D.

Charles Ananian, M.D.

Sponsored Content | Case Study | Digital Radiography (DR) | November 07, 2018
Whether it’s a premature baby or a critically ill child, treating little patients is a huge responsibility.
Results of the vertebrae-based analysis (383 vertebrae in 34 patients) for detection of BME.

Results of the vertebrae-based analysis (383 vertebrae in 34 patients) for detection of BME.

Sponsored Content | Case Study | Computed Tomography (CT) | November 06, 2018
The following is a summary of a study published in the
The Acuson Sequoia

The Acuson Sequoia from Siemens Healthineers.

Feature | Ultrasound Imaging | November 05, 2018 | By Jeff Zagoudis
As the world’s most utilized medical imaging modality, ultrasound is likely to be featured heavily at the 2018...
Fujifilm SonoSite Launches New Point-of-Care Ultrasound Educational Resources
News | Ultrasound Imaging | November 01, 2018
Fujifilm SonoSite Inc. announced the launch of its redesigned SonoSite Institute, a comprehensive online educational...
Vygon and Sonoscanner Partnering on New Ultrasound System for Catheter Placement Guidance
News | Cardiovascular Ultrasound | October 31, 2018
Vygon, an international group specialized in single-use medical devices, and French company Sonoscanner announced the...
Cardiac Ultrasound Software Streamlines Fetal Heart Exams
Feature | Cardiovascular Ultrasound | October 30, 2018
A new tool called fetalHQ on GE Healthcare’s Voluson ultrasound systems is the first tool to simultaneously examine the...
Hitachi Supports ASE Foundation Cardiovascular Outreach Mission in West Virginia
News | Cardiovascular Ultrasound | October 29, 2018
Hitachi Healthcare Americas participated in the cardiovascular screening and diagnostic triage event that took place...