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The first sign of maturity is the discovery that the volume knob also turns to the left.

devel / comp.protocols.dicom / Re: Hounsfield to MG/CC

Re: Hounsfield to MG/CC

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Subject: Re: Hounsfield to MG/CC
From: wtchu8@gmail.com (Winston Chu)
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by: Winston Chu - Tue, 10 Jan 2023 17:26 UTC

On Friday, July 27, 2007 at 6:05:56 PM UTC-4, Mike wrote:
> On Jul 26, 9:19 am, Lint Radley <scanoma...@forwardbounding.com>
> wrote:
> > Hello,
> >
> > I've seem many applications which display volumes as mg/cc. Does any one
> > know the conversion from Hounsfield Unit to mg/cc? I can easily
> > calculate the HU of a volume, just looking for the conversion.
> >
> > I've been scouring the net, but no luck so far... Any advice would be
> > immensely appreciated.
> HU is already a relative density unit, so the conversion is simple:
> HU = 1000*(density - density or water)/(density of water)
> Solving for density gives
> density = (H/1000 + 1)*(density of water)
> The density of water is 1000 mg/mL, so this works out numerically to
> density = HU + 1000 in mg/mL. There is no need to measure volumes or
> masses of pixels or organs or anything else. Of course the accuracy
> depends on the calibration of the scanner...
> Mike

Hi Mike,

This makes sense to me. Is there a paper or textbook we can cite for this?
This is the closest to a cite-able paper I've found, but I would prefer to cite a modern textbook.
https://www.thieme-connect.com/products/ejournals/pdf/10.1055/s-2007-1011435.pdf?casa_token=g6IlavbVzhkAAAAA:h-DAclNT5lYpmzuax78EMMf6LTeuZuaREUhlDNVv1kOsCj6YsKS_fa-g8Tf4ZLs2-4nryCtgcXoTy3JC

Thanks,
Winston