Nokia Sensing X-challenge 2013

ABUS-URODYNAMICS TEAM Demonstration Slides (rev.04)

Airborne Ultrasound Doppler System for External Urodynamics Application

Seiji Matsumoto, Yasuhito Takeuchi* and Hidehiro KakizakiDepartment of Renal and Urologic Surgery

Asahikawa Medical University2-1-1-1 Midorigaoka Higashi, Asahikawa 078-8510 Japan

*corresponding author y.takeuchi@ieee.org,

37 Mikumicho, Hamamatsu 432-8017 Japan, +81534531314

This Slide 1st used for YKJCA 2013@Korea Maritime University 2013:01:26,BusanKorea,

Reorganized 2013:07:09 and 09:14 for Nokia Sensing X-challenge

ABUS-URODYNAMICS team introduction

Research Conducted By

Asahikawa Medical UniversityDepartment of Renal and Urologic Surgery

The Subject of the Study:

Measurement of Urination

Measurement of Speed-Time of Running Urea Drop in Air by

DIY(do it for yourself)/Wearable Device

See Next Slide

We do now by 40KHz airborne ultrasound Doppler

Wearable Sensor

Conventional Mess-Cup Method (clinically yet used now)

We did in 1988 by standalone 24GHz MMW Doppler

Basic (Conventional) Concept of Urodynamics Measurement (uroflowmetrey: UFM)

Patient must go to this device and do exactly target the measuring cup

Measuring Device Example Waveforms and Parameters

(s)

(mL/s)

Avg. Flow Rate

Voiding time

Max. Flow RateVolume/time

20

10

30

10 20

10 20 30

10

10 20 30

10

（ Normal ）

(Prostatic Hypertrophy)

（ Abdominal Straining Micturition ）

Recorder

Case 1：Male 65Symptom： retardation, incomplete feeling, residual droplets.

Case 2：Male 79Symptom： retardation, abdominal straining, residual droplets.

13th Infrared and MM-Wave (IRMMW-1988)

Takeuchi Y., “CW Doppler Systems for External Urodynamics Study, Comparison between Electromagnetic Wave and Airborne Ultrasound" 13th IRMMW session F1.8, SPIE Volume 1039, 1988

Takeuchi Y. “CW Doppler Systems for External Urodynamics Study, Comparison between electromagnetic Wave and Airborne Ultrasound" 13th IRMMW session F1.8, SPIE Volume 1039, 1988

13th IRMMW (1988)

Let’s move to

Patient-Own Device//Patient Self Management

of Health-Care

however

The Word In Fashon NOW

DIGITAL HEALTH

D I Y

DO IT FOR YOURSELF

40KHz Airborne Ultrasound Transducerwith finger clip, diameter=1cm.

1st generation prototype transceiver

Surface reflectivity (echogenicity) of flying water droplet is almost 100% both for microwave and ultrasound. This is “very big” compared with that of inside body tissue interface echogenicity for MHz ultrasound, which is only an order of %. This is very much benefit for our Doppler system.

Average size of water (urea) droplet running in air is 1~2mm. For 40KHz airborne ultrasound (wavelength=8.5mm) the Ka value is around 0.7, echogenicity Z is at nearly maximum of Rayl

eigh zone.

Early Prototype Unit

Early Prototype Unit in Service

Latest Prototype Unit Dual Transducer Model

Single and Dual Transducer Models

The Transducer, and a View at the Resonant Chamber Removed (on 1mm pitch graph paper)

Center Driven Radiator Dish Coupled to Small PZT Disc

Transducer Directivity Shown in dB over Azimuth Angle

Transducer Frequency Response (one way)

-3dB Bandwidth =~ 1.8KHz

In-Use Model

Doppler Signal (audio)

Doppler Signal Frequency Spectrum

Fd=330Hz

Fd=0(dc)

t=0 t=30sec.

Example of Doppler Signal and its Spectrum of Real Urination.

Another Example of Real Urination

Signal

Spectrum

Conventional Method Uroflow-metr

y Data

Doppler-Based Uroflowmetry S

ubstitute

Ridge Tracing on Spectrogram

(With Speckle Reduction and 2D Smoothing)

This will be applicable as conventional uroflowmetry substitute

Edge Tracing vs. Ridge Tracing; Which is Better or More Applicable? (in study)

Edge

Ridge

Expected Conclusion: Both are Equally Applicable

For Pissing Boy Doppler Demo Visit: http://www.youtube.c

om/watch?v=CarotW-3Jfw

Our Position:

Traditional(Conventional) Methods ALL Stick to Quantity-Time Measurement (by cup or turbin or any) to Yield “Voi

ding Pattern”

We Skip Q(t) Measurement and Direct to Flow Pattern Observation

by Doppler

Dopplers* Can Estimate Target Quantity Too, However, With Limited Certainty**.

*Common for Microwave and Ultrasound.

**Practically, +-20% or like under known propagation attenuation.

Echo Power Represents Target Mass

We Skip Q(t) and Direct Doppler Spectrum to Flow Pattern, Because --

Almost of Diagnosis Can Be Made With How and How and How----

Our Doppler Based Flow Pattern (Real Data)

Conventional Q(t) Based Flow Pattern (scheme)

These are quite well DIAGNOSIS compatible

We tried this for 31 urinations of 22 volunteers, 16 males and 6 females, for 27 (87.1%) successful acquisition of this style of diagnostic quality urination pattern data.

Failures all caused by wrong positioning or direction of transducer

Preclinical/Laboratory Test (2012-2013)

Conclusion

DIY Doppler Uroflowmetry = FEASIBLE

QUALITATIVELY same data available for diagnosis

Will replace conventional MESS-CUP type device

Will allow DIY personal/digital/self-managed healthcare in urology discipline

ABUS (Airborne Ultrasound) Doppler

There are so so many many other interesting, funny or serious applications at our hand, however, will

be introduced in elsewhere and on chances.

3sec.

Bicycle Running with Finger-Mount Doppler Sensor

Down slope Crossing with Other Bicycle

stop

Vert Axis=Doppler Shift, 0-1.5KHzLine of Sight speed 0-6m/s or 0-20km/h

Totally about 3 minutesstart

Flat Road

Retarding at road cross

Vert Axis = Doppler Shift 0 - 750Hz, 0-3m/s or 0-10Km/h

Walking with finger mount Doppler unit forward directing

About 3 minutes total

Totally about 6 second

Running Automobiles Sidelooks

Mild Rain // Falling Water-Drops

Totally about 6 seconds

Musicological interpretation and presentation of pissing Doppler signals.

24h 7d Pissing Boy “Julian” @Bruxelles

Having Tail Pipe!!

W/W Highest Altitude Pissing Boy Statue Iya Valley, Tokushima, Japan

(Actually NO pissing at all)

Thanks for Your Attention