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> The standard includes a file format definition and a network communications protocol that uses TCP/IP to communicate between systems. Is this as cursed as it
by kaibee 4y ago
> The standard includes a file format definition and a network communications protocol that uses TCP/IP to communicate between systems.
Is this as cursed as it sounds?
- quasarj 4y agoYes.
- haolez 4y agoIt's fully binary and is document as a Lisp, as far as I remember. It's very nightmarish, but it's from the 80s, so it has its merits for staying for so long.
- danielheath 4y agoThe file format is reasonably cursed (header fields to indicate endian-ness, multiple internal metadata tables, and it's a container format so you can encode the image data using any one of 6-8 codecs - or just include a link to the TCP stream). I haven't used the network protocol, but having some way to only bring the required pixel data across the network is pretty important - uncompressed CT scans are often hundreds of megabytes and the standard was developed before ethernet was widespread.
- evulhotdog 4y agoA standard uncompressed CT slice is ~512kb, so multiply that by the number of slices. Angiograms tend to be much larger as well.
- danielheath 4y agoI'm starting to see 1000-slice scans more often, but I hear 100-400 was more common back when size was a pressing concern.
- evulhotdog 4y agoApparently you haven’t seen what the Toshibas/Canons can pump out. Some can be 6000 slices or more.