[FoRK] medical file Re: Aaron does (some of) it for me (re: iPad)

Stephen Williams sdw at lig.net
Fri Feb 5 09:34:20 PST 2010

Damien Morton wrote:
> On Thu, Feb 4, 2010 at 6:33 AM, Stephen Williams <sdw at lig.net> wrote:
>> ....
>> My dentist has color monitors they use for this.  Probably not 16 bit+, but
>> could be.  The x-ray machine is all digital, no film.  They put a sensor in
>> your mouth.
> My dentist used a sensor as well - fucking huge lump of plastic. Really
> uncomfortable.  Much prefer the film in a flexible plastic cover.

I'm with you.  What lame product designer couldn't think of rounding the 
edges and corners??

Looks like a booming market.  I found these specs:

> Maximum Gray Levels      4096      4096
>    1.  Resolution: The pixel resolution of the high resolution (HiRes) 
> sensors exceeds 15 lp/mm. The standard resolution of an X-Ray image, 
> as measured by the modulation transfer function (MTF) exceeds 12 
> lp/mm. This is measured by using a standard 60 kV intraoral X-ray source.
>    2. Dose Efficiency: The sensor will produce a high quality image 
> with an X-Ray dose that is only a fraction of the standard dose 
> required by Dental X-Ray film.
>    3. Diagnostic Efficacy: The system will produce a superior image 
> quality of images obtained when using standard dental X-Ray film. This 
> allows the dentist to diagnose standard intraoral pathologies 
> encountered during screening procedures.
>    4. Wide dynamic range: The sensor pixel well capacity is very high, 
> allowing a higher accommodation of greyscale (bone density) dynamic range.


More information about the FoRK mailing list