EEVblog #1314 - Ultrasound Machine Teardown!

Complete teardown of an ATL/Philips HDI 3000 ultrasound machine.

#Ultrasound #Teardown

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[ats]

Arg! As a sonar guy, I can tell you that the function of the TGC is to increase the receiver gain as time elapses from when the pulse was transmitted. Without this, the signal would be huge (and clipping) right after the transmit pulse ended, and buried in the A/D's quantizing noise at larger time delays from the end of the transmit pulse. In many radar and sonar units, this is called TVG (Time Varying Gain).

[tookitogo]

6:25 E-net is Ethernet: that’s an AUI connector, to which one attaches an Ethernet transceiver for the physical medium used (10Base-5, 10Base-2, or 10Base-T).

[AndrewFremantle]

Assuming it's standard SCSI, you really should rip out and hang on to that MO drive and disk - those are small and rare enough to be interesting to a computing museum.

[alexv]

44:00 on the Advnaced IF Output board top left corner the two ceramic chips are Cartesian data (Real and Imaginary) into Polar form (Magnitude and Phase) converts (PDSP16330A) made by GEC-Plessey Semiconductor (GPS).

[airgunnut]

260 pins per plug, (yes i am that sad)

[simontay]

WOW! That machine is absolutely amazing! My mind is blown. SO many ICs. Its never ending. Think of the people that designed and layed out these boards. Absolute geniuses.
Remember, this was designed in the MS-DOS era, there was no GUI CAD software 30 years ago. It must've taken months if not years to get it right. The schematic diagrams must be 1000 pages long.
He should frame some of those PCBs and put them on the wall. I would.

[WobblycogsUk]

You can easily buy an ultrasound that has more capability than this which will also fit in a briefcase and weigh about as much as a heavy laptop. Ultrasound technology has come on leaps and bounds in recent years. For an example look up the Philips CX50.

[xraytonyb]

I used to service these units when they were still in use. They weren't as popular as the higher-end HDI 5000, as they didn't have as good of image quality. ATL was purchased by Philips Medical, BTW, so they still exist within that corporation. The panel on the front was referred to as the "mux" panel (multiplexer). It is responsible for switching between the three transducer input connectors. Those highly shielded boards the the mux panel plugs into are called the front end boards. They are responsible for beam forming. Each transducer is a bit different (i.e. linear, convex, sector, etc.) and these boards compensate for each individual channel on any given transducer. Each front end board contains an array of preamps that are controlled by the software. They can be swapped around in order to troubleshoot faults in the boards. Information for each individual transducer is stored on a circuit board inside the large connector for that transducer. That's why the connector housing is so large. Color, PW and other functions are added by the boards connected to these front end boards (just keeping it simple). By the time the signal leaves the front end section, it has been processed into a raw image with X, Y, Z and direction of flow information. This then goes to the "back end" section of the unit, where the image is processed, demographics are added and the image is displayed on the monitor. The MO disk on the back of the unit is sometimes a bootable disk. It can be used to restore the hard drive when it gets corrupt. I can't remember all of the commands, but I think one of them is when you press "super key" and "0" at the same time, it will put you into service mode. Thanks for the tear-down video. It brought back a lot of memories!

[domntr]

Wow, this is a blast from the past for me! Was working on these when I got into ultrasound field service. If you want to see newer examples, we've got a ton of them around here I have access to.

[UpcycleElectronics]

The BOM must look like a distributor's inventory stock. What is BOM management like at this scale?

[muctop]

10:00 Dallas1286?
Thats why they threw it away! After decades the Battery is empty!
Helped another Doc save his unit by changing that stuff !
He didn´t want to learn how to handle a new unit because of his age...

[johnsonlam]

I guess the E-NET is Ethernet but 10Base5 (AUI), link:

[ivanpetrov]

The chassis looks like it's international space station ready. Very well built machine.

[michaelslee]

Wife blew out her ankle at netball.
Went to Doctor “ how many days” not our GP as it’s just a normal netball thing, no big

X ray. No busted bones.
Ultrasound. All good no problemos.
Still not better after ages.
Go to our GP and he gets a bit pissed and orders an MRI, ligament no longer connected.
One full ankle reco later.
Ultrasound was piss poor for this scenario

[a.johnson]

Raytheon chips are hardened against radiation (RF, and Alpha, Beta, & X). They are used a lot in military applications.

[sbalogh]

6:26 That E-Net is using an older style Ethernet connection using DB series connectors. We used them on some of our network equipment back in the 1990s.

[Willster]

This video is a long time in the making. I've been waiting for this video for ages thankyou!

[LazerLord]

Gold-glad ceramic packages always feel special to me.

[McTroyd]

Never apologize for the length of a video. Bored people can scrub around and see the bits they want to see. I appreciate the detail -- were it not for your teardowns, I'd probably never see most of this stuff (let alone get the insight!).

[BlackEpyon]

I haven't been inside a piece of medical equipment since I was a kid. My dad used to work for Datex Ohmeda. They had since been bought out by Instrumentarium, which was then bought out by General Electric, but back then my dad was the senior service rep for British Columbia and the Yukon (Canada). He used to go out all the time to hospitals when one of the machines needed servicing, and sometimes they'd just ship them to our house so he could service them there. In which case, I got to see their guts. I don't know if Ohmeda did ultrasound machines, but he did get a lot of anaesthetic machines and ventilators to service.