Forensic Medicine Unit
Heraklion University Hospital

νέα
28 September 2019
the Forensic Unit organizes the 2nd Hellenic Scientific Forensic Symposium

radiation filtering / upload


upload an archive containing CT images in DICOM format and select radiation intensity thresholds. Use characteristic attenuation ranges for specific materials such as the ones presented in the table below. The application will return the subset of images where detection was sensitive enough. Alternatively, you can use an already uploaded dataset. Take a look at this simple demo

dataset (a TAR file containing the CT files)

maximum HU value

minimum HU value

detection sensitivity (1-100)

password


table: hounsfield units and corresponding tissues
unit rangetissue
>1000bone, calcium, metal
100 to 600iodinated CT contrast
30 to 500punctate calcifications
60 to 100intracranial hemorrhage
35gray matter
25white matter
20 to 40muscle, soft tissue
0water
−30 to −70fat
<−1000air

$$HU = 1000 * \frac{ (μ_{tissue} - μ_{H_{2}O}) } { μ_{H_{2}O} }$$ where μ is the CT linear attenuation coefficient
Hounsfield Scale, in subject area: Medicine and Dentistry

written by Kalohr
December 2019