Multi-slice is fast because you scan more of the patient at a time. Scan time is a function of gantry speed, detector width and how fast the couch is moving (without getting too complex).
I think 2 is moot because it would be very hard to find a single slice axial machine in use these days. Imaging experts could debate the quality of a multi-slice helical vs a single slice axial. In terms of clinical end points I doubt you would find a difference.
10 years is a long time for a CT scanner in a radiology department. The throughput for a 10 year old scanner is lower than a new one and would end up hurting more than helping.
How stuff gets paid for and replaced in a hospital is not too different than any other industry. Equipment is paid for and depreciated over a useful lifetime, it has an expected ROI, when the lifetime is up you replace it. If the budget is tight you may try to get more years on it. Some equipment is leased.
Holly crap, one little thing falls off or gets loose, and falls in the path of that spinnning, and you are dead. What the heck is this! Cant we create machines that don't kill us in freak accidents
No, at that time I was an assitant director at a hosptial. There were considerable issue with several 16 slice systems on the market. Both the Phillips and the Toshiba both were blowing tubes left and right very early on.
hmm...never heard of our tubes being a problem like that unless it was a dunlee tube, our mrc tubes are some of the best in the business. I have a 16 slice mx8000 idt (water cooled) an older scanner that had 750,000 scan seconds on it before it needed replacement, that's probably three times the expected life of it. If it was blowing tubes left and right I would suggest that the installers didn't do something correctly, or your high voltage mains experienced alot of spikes or something.
@raenrfm so you are saying philips tubes (or dunlee tube whatsoever) is giving you the optimal performance, but what about replacement costs? Isn,t it to heavy, so obviously they are unaffordable in countries like india or some growing nations.
@santhojohn30 Honestly I do not care any more, my manager is/was a knucklehead and decided that my job was unecessary so I'm really not pro Philips anymore. They have dinosaurs running that company, my manager has the peronality of a crocodile.
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psykoesj 6 days ago
I can't believe how fast it spins
lizichell2 11 months ago
1. Is the benefit of a multislice scanner only that it can take fewer revolutions per slice, or is there better image quality and less artifacts.
2. Is there ever a situation where a incremental scan is better than a spiral scan?
I ask #2 because I had my first spiral scan yesterday despite the technology being around for a while.
3. Is a scanner so expensive that a hospital would hold off getting a spiral scanner for over a decade?
LukeL007 2 years ago
Multi-slice is fast because you scan more of the patient at a time. Scan time is a function of gantry speed, detector width and how fast the couch is moving (without getting too complex).
I think 2 is moot because it would be very hard to find a single slice axial machine in use these days. Imaging experts could debate the quality of a multi-slice helical vs a single slice axial. In terms of clinical end points I doubt you would find a difference.
mutualin4mation 2 years ago
10 years is a long time for a CT scanner in a radiology department. The throughput for a 10 year old scanner is lower than a new one and would end up hurting more than helping.
How stuff gets paid for and replaced in a hospital is not too different than any other industry. Equipment is paid for and depreciated over a useful lifetime, it has an expected ROI, when the lifetime is up you replace it. If the budget is tight you may try to get more years on it. Some equipment is leased.
mutualin4mation 2 years ago
hey nice to see this, our GE still sucks having only 0.8 sec gantry till 15 slice.
santhojohn30 2 years ago
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elementx440 3 years ago
true enough on the initial installation or after a tube replacement, are you a field service guy? What company?
raenrfm 3 years ago
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elementx440 3 years ago
That's funny I'm on MR training right now.
raenrfm 3 years ago
What it is dieferent btw 5 MHU and 8 MHU of Brilliance tomographe ??
We are looking for to buy one
aldoava 2 years ago
Holly crap, one little thing falls off or gets loose, and falls in the path of that spinnning, and you are dead. What the heck is this! Cant we create machines that don't kill us in freak accidents
sanjose21ca 3 years ago
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elementx440 3 years ago
The inside of the scanner is very nice. It's like looking under the hood of a well made car. I wish other manufactures would do as well Philips does.
mutualin4mation 2 years ago
Holly crap! that thing could kill someone if something went wrong !
ivanbunny25 3 years ago
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elementx440 3 years ago
Even when the philips came out it was a big POS.
tubevoyr 3 years ago
What do you base that on? Or are you a GE employee? lol.
And yeah the scanner has a contact switch at the top left that you pull out for service, but should only be done by a qualified engineer.
raenrfm 3 years ago
No, at that time I was an assitant director at a hosptial. There were considerable issue with several 16 slice systems on the market. Both the Phillips and the Toshiba both were blowing tubes left and right very early on.
tubevoyr 3 years ago
hmm...never heard of our tubes being a problem like that unless it was a dunlee tube, our mrc tubes are some of the best in the business. I have a 16 slice mx8000 idt (water cooled) an older scanner that had 750,000 scan seconds on it before it needed replacement, that's probably three times the expected life of it. If it was blowing tubes left and right I would suggest that the installers didn't do something correctly, or your high voltage mains experienced alot of spikes or something.
raenrfm 3 years ago
@raenrfm so you are saying philips tubes (or dunlee tube whatsoever) is giving you the optimal performance, but what about replacement costs? Isn,t it to heavy, so obviously they are unaffordable in countries like india or some growing nations.
santhojohn30 2 years ago
@santhojohn30 Honestly I do not care any more, my manager is/was a knucklehead and decided that my job was unecessary so I'm really not pro Philips anymore. They have dinosaurs running that company, my manager has the peronality of a crocodile.
raenrfm 2 years ago
@santhojohn30 do you know which dunlee model replaces MRC-600?
culpritto 1 year ago
This was done as part of installation. A well qualified person ran the machine while interested on lookers watched.
mutualin4mation 4 years ago
OK, then it isn't very dangerous.. But it still is a large mass which is turning.. You looked at one of the nicest systems on earth :)
erwtje83 4 years ago
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elementx440 3 years ago
i feel .... so like i got in a washing machine...
Rougecoat13 4 years ago
This was done as part of installation. A well qualified person ran the machine while interested on lookers watched.
mutualin4mation 4 years ago
wheee!
MaisonDetre 4 years ago