<div dir="ltr">Hi Atiq, <div><br></div><div>I am doing something similar for dosimetry purposes. </div><div>From what I have read, the HU depends on the CT scanner that acquired the images. For dosimetry, it is not necessary to produce such small bins (as in your example) because there is not a good relationship between CT unit and tissue composition in the range of soft tissues and dose does not differ much within them. </div><div><br></div><div>I would let the experts add more to what I said. </div><div><br></div><div>Best, </div><div><br></div><div>Inês</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Atiq Ur Rahman <<a href="mailto:atiqchep@gmail.com">atiqchep@gmail.com</a>> escreveu no dia quinta, 8/04/2021 à(s) 08:47:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Dear experts,<div>I am trying to read the CT images in Gate. I am successful to read the CT Image but I am not sure about the precise organ density ranges in HU units for Abdomen and Brain CT images. Right now, I am trying to implement it from different online research papers and websites but that may not be a standard Benchmark.</div><div>For example, I am using this file for Abdomen CT:</div><div>-1024 -600 Air<br>-600 -120 Adipose<br>-120 -90 TissueEquivalent<br>-90 1 Blood<br>1 10 Mucus<br>10 20 Intestine<br>20 30 Kidney<br>30 40 Pancreas<br>40 50 Spleen<br>50 200 Liver<br>200 400 SpangyBone<br>400 3072 SpineBone<br></div><div> Can anyone point me to some standard material conversion files or resources with HU ranges? <br></div><div>Looking forward to any feedback.</div><div></div><div>Regards</div><div>Atiq </div></div>
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