On Friday, September, 7, 2018, I had tickets for the baseball game of the Chicago Cubs versus the Washington Nationals at Nationals Park in Washington, D. C. Unfortunately due to weather including rain and thunderstorms, the game was never completed and made official. Only a bit over 1 inning was played. Jon Lester started for the Cubs while Joe Ross started for the Nationals. No runs were scored. The game was later postponed for makeup the following Saturday as a single admission doubleheader. Below are some pictures I took at the game along with the official details regarding makeup from the Washington Nationals Twitter.

washington nationals cubs postponed game weather - Postponed Chicago Cubs vs. Washington Nationals at Nationals Park Game

Cubs Nationals Rain Delay
Cubs Nationals Rain Tarp
Cubs Nationals Delay Scoreboard
Cubs Nationals Lester Pitching
Chicago Cubs Jon Lester Nationals Park

I had an opportunity to attend the American Telemedicine Association 2018 Conference (ATA18), in Chicago, Illinois, at McCormick Place. The annual gathering brings together healthcare professionals, business professionals, and leaders in different areas of healthcare and technology and occurred from Sunday April 29 to Tuesday May 1, 2018. ATA18 was billed as the world’s largest telehealth networking event with a focus on the latest innovations. The term telehealth includes many technologies and ways to deliver virtual medical, health, and education services. More than 150 different exhibitors were in attendance. Attendees also had the opportunity to attend over 100 sessions.

I attended sessions including “Technology in Service to Patients and Consumers: Emerging Trends in Virtual Care,” “What Does Artificial Intelligence Have to Do with Population Health?,” and “New Models for Telehealth at Scale: Strategic Telehealth Expansion Initiatives at DoD and VA.” A doctor from Partners Healthcare in Boston discussed four different ways that they are using artificial intelligence to help in the hospital setting. For example, there was some discussion of how a good predictor for when a patient may be re-admitted is if they live alone and have no support systems. It was also interesting to see all the ways the army, navy, airforce, and department of veterans affairs of the U.S. has expanded ways to treat patients without the physician actually seeing them in an office. In particular, the navy discussed how with radiology most of their radiologists are now located in several larger cities in the U.S. and that at some of their sites there is no radiologist. Instead, around 25% to 30% of all the work the radiologists do is for other sites outside of their location. It also seemed that the largest current component for physician patient interactions is using telehealth to deliver behavioral medicine like cognitive behavioral therapy.

Below are some of the pictures I took while at the ATA annual conference in 2018, in Chicago, IL.


ATA18 Hours Exhibits


























I am pleased that a paper titled “A Time-Domain Measurement System for UWB Microwave Imaging” has been published in IEEE Transactions on Microwave Theory and Techniques, in 2018, that I am a co-author on through work with the Celadon Research Division of Ellumen Inc. This paper discusses a fully automatic time domain measurement system for microwave imaging using a pair of movable antennas to transmit and receive custom UWB pulse designs. The system described in the paper incorporates some elements from the Microwave Imaging Device patent previously discussed where a pair of movable antennas are independently controlled to rotate around a region of interest. This paper builds upon work previously presented in 2017, in IEEE Transactions on Microwave Theory and Techniques in the paper “A Phase Confocal Method for Near-Field Microwave Imaging” and at the IEEE AP-S Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting in the the poster presentation titled “Experimental Microwave Near-field Detection with Moveable Antennas.” The prior two works discussed using the system in the frequency domain with a vector network analyzer to generate and receive signals. In this new paper the time domain use of the system is described using an arbitrary waveform generator to generate signals and a digital phosphor oscilloscope to receive signals.

I have included an excerpt from the accepted version of the paper below. DOI: https://doi.org/10.1109/TMTT.2018.2801862 © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

microwave imaging time domain device

Figure 2 in the paper shows the system as was set up at Ellumen Inc. along with a PVC cylinder placed in the middle tray. A reconstructed image from data collected using the setup in Figure 2 using the delay multiply and sum (DMAS) imaging algorithm is shown in Figure 9. In Figure 10(a) the object was changed to a metallic object and a long wood square object both placed in the middle tray. A reconstructed image produced using DMAS is shown in Figure 10(b). Also note that the DMAS algorithm was programmed on eight nVidia Tesla GPUs which allowed images to be produced in under 1 minute. A comparison between the time domain system and frequency domain system was performed in the paper but is not included in the above excerpt. This analysis showed that both methods of data collection can allow for accurate reconstructed images to be obtained. The software to control the data collection was also updated as presented in this paper so that it takes 20 minutes to complete both incident and total field data collections. I encourage you to download and read the full “A Time-Domain Measurement System for UWB Microwave Imaging” paper from IEEE for full details and analysis.

I was able to attend a college basketball game at Allstate Arena in Rosemont, Illinois, on Saturday, February 17, 2018. The Northwestern University Wildcats played the Michigan State University Spartans. All homes games for the 2017 to 2018 Northwestern University basketball season are being played at Allstate Arena while Welsh-Ryan Arena undergoes a renovation.

Northwestern faced a tough opponent in Michigan State as they were the #2 AP ranked men’s college basketball team in the U.S. coming into the game. Northwestern played extremely well in the first half and led by 27 points at one point before going into halftime up 49 to 27. However, Northwestern struggled in the second half scoring only 11 points total. Michigan State won the game with a score of 65 to 60.

Northwestern forward Vic Law lead the team with 21 points and 5 assists. Northwestern forward Gavin Skelly added 11 points and 2 rebounds and center Dererk Pardon had 8 points and 6 rebounds; however, both had foul trouble late and had trouble staying on the floor. Michigan State guard Cassius Winston had 17 points, 10 rebounds, and 7 assists. Northwestern had a chance to knock off a top team, but failed to score for more than than 11 minutes in the second half.

Below are some pictures I took while at Allstate Arena during the Michigan State vs Northwestern college basketball game.

Northwestern Michigan State basketball

Northwestern Allstate Arena starting lineup

Northwestern Michigan State tip off

Northwestern Michigan State huddle

Allstate Arena college basketball

Northwestern cheerleading

Northwestern Michigan State halftime

Michigan State basketball bench

Michigan State Northwestern Allstate Arena

Northwestern basketball pass

Northwestern Michigan State dribble

During my work with the Celadon Research Division of Ellumen Inc., I was a co-inventor on a patent titled “Microwave Imaging Device” that recently issued on January 16, 2018. This is the fourth patent I have been a co-inventor on. If you are looking for more details of my prior three patents see the post titled “Description of Three Patents Named Co-Inventor On Assigned to Ellumen Inc.” All of these patents were granted by the United States Patent and Trademark Office (USPTO) and currently assigned to Ellumen Inc. I wanted to describe more of the details of the “Microwave Imaging Device” patent.

The “Microwave Imaging Device” patent resulted from wanting an automatic way to acquire microwave imaging data pertaining to some object and/or body part from both a movable transmitting and receiving antenna. In addition, there was desire to be able to collect not just 2D data but also 3D data and also acquire the surface information of what was placed inside the scanner. To accomplish this, a system was built that: 1) contained an object support to hold an object on, 2) contained a transmitter antenna, 3) contained a receiver antenna, 4) had both an inner and outer ring where either the transmitter or receiver was mounted on, 5) contained a controller to independently rotate both the inner and outer ring, 6) contained a computation processor to receive the collected data, and in one embodiment 7) contained a controller to move the object support up and down, and 8) contained an object surface position sensor mounted to either the inner or outer ring to collect the surface of the object. It is important to note that the inner and outer ring are concentric to each other but have different radii. In some embodiments, gears, pinions, and motors are used to help rotate the inner and outer rings, while a feedback monitor can determine if any potential mismatch in positioning occurs. The system further allows for the object surface position data to be used as a seed in the reconstruction of an image represented in dielectric values. In one embodiment, stored data of a prior image reconstruction that closely matches data of the object is used in combination with surface position data as a seed in the reconstruction. The patent also allows for the transmitter and receiver antenna to be mounted in such a way that they can radially translate to and from the center of the device. In addition, the patent covers some aspects of the controller and its module including positions to move both the transmitter and receiver antenna to, the names and locations of the collected data for storage, any necessary instrument parameters, and a calibration of the initial positions of the transmitter and receiver antenna.

The Celadon Research Division of Ellumen Inc. built a prototype of the robotic microwave imaging device as described in the patent that communicates with laboratory instruments (arbitrary waveform generator, oscilloscope, and vector network analyzer) and an infrared sensor and acquires data at different positions for the transmitting and receiving antenna and sensor. I helped program instrument commands to talk to the laboratory instruments using Virtual Instrument Software Architecture (VISA) to automatically acquire data. I collaborated on development of the graphical user interface (GUI) using VB.NET, MATLAB, and a dynamic-link library (DLL). The device can collect data in both the time and frequency domains and be operated remotely with monitoring by a camera. I helped collect data and programmed code to process the data including quickly loading in many data sets, plotting the data, performing analysis, and performing surface reconstruction. I also helped program and generate image reconstruction results from the data collected by the device. The Celadon Research Division of Ellumen Inc., presented a discussion of the device and imaging results in the journal publication IEEE Transactions on Microwave Theory and Techniques and at the IEEE AP-S Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting in San Diego, CA, in July 2017. See the paper titled “A Phase Confocal Method for Near-Field Microwave Imaging” and the paper of the poster presentation titled “Experimental Microwave Near-field Detection with Moveable Antennas” for some additional details. I was a co-author on the published paper and helped participate in the presentation. A few photos from the conference in San Diego were previously published in the post titled “IEEE AP-S Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting in San Diego, CA, in July 2017.”

It is exciting to work on new technology and devices that can have a real impact on the health of patients. Below is a patent certificate that was created to celebrate the accomplishment of having the patent granted.

Microwave Imaging Device Patent