This tool calculates the effective dose (mSv) with respect to the DAP value (e.g. cGy.cm2)
belonging to different types of radiograph. It does for instance, Gy.cm2 to mSv conversion. It is emphasized that the result is
an estimation. The conversion factor relates to ICRP 103 and is obtained from: Radiation
risks from medical x-ray examinations as a function of the age and sex
of the patient,
BF Wall et al.,
Report HPA-CRCE-028 (2011); www.hpa.org.uk
Note: use point in stead of comma as a decimal separator.
The publication gives different types of radiograph and their conversion factors:
Head AP, Head PA, Head Lat, Cervical spine AP, Cervical spine Lat, Shoulder AP, Shoulder (axial), Chest PA, Chest Lat, Thoracic spine AP, Thoracic spine LAT, Lumbar spine AP, Lumbar spine Lat, Lumbo spine Lat, Lumbo-sacral joint Lat, Apdomen AP, Pelvis AP, Single Hip AP, Both Hips AP, Femur AP, Femur Lat, Knee AP, Knee Lat, Foot (dorsi-plantar), Foot (oblique)
Note: use point in stead of comma as a decimal separator.
Example Abdomen AP:
Dose area product = 2 Gy.cm2
Conversion coefficient - Abdomen AP = 0.18 mSv per Gy.cm2
Effective dose = conversion coefficient x DAP =
0.18 mSv/(Gy.cm2) x 2 Gy.cm2 = 0.36 mSv
Is everything correct? Everywhere in the publications the effective dose for chest imaging is given as 0.02 mSv. But here in the calculator the values come out as 0.0002 mSv. Are the units wrong?
ReplyDeleteAre you using point instead of comma? Also be careful about unit, you have to choose the right one. In DICOM DAP has dGy*cm2.
DeleteI want to convert DAP of humerus to effective dose but It doesn’t have humerus to select so Can I select shoulder instead????
ReplyDeleteIs an number that follow the protocol is conversion coefficient????
ReplyDeleteBonjour, Que faut-il choisir pour un TOGD ?
ReplyDeleteI concerted 1169 mGy*cm2 on another website, it says 2.34 msv, Now this one says it is 0.0678 msv. I hope the latter is the correct one, but I don't think so.
ReplyDeleteMusisz rozróżnić DAP A DLP. Jeżeli podajesz wartość mgy*cm2 to wiadomo, że podajesz DAP czyli wartość mSv to 0.0678.
DeleteWHAT DOES MEANING OF CHEST PA 0.16
ReplyDeleteI received 531 mGycm2 in the CBCT examination (CONE TOMOGRAPHY). I cannot select the appropriate field *maxilla/mandible to make the correct mSv measurement. Regards
ReplyDeleteSame, if the site owner is reading this, please add values for dental CBCT :)
DeleteThis is aawesome
ReplyDeleteAre these conversion estimations also applicable to babies and children?
ReplyDeleteHello! I made an x-ray of the sacro-iliac joints and I want to know what is the effective dose of radiation (mSv). The X-ray result shows DAP of 1900 mGy x cm2 and 1500 mGy x cm2. I calculated according to the calculator on the site and it seems to me that mSv is very small, on other sites it gives me a much higher value. The idea is that I took 3 sacro-iliac radiographs instead of one, and during a year I took about 13 radiographs, that's why I'm very interested in calculating that mSv. Is there an error somewhere? Or am I doing something wrong? Thank you
ReplyDeleteVery ccreative post
ReplyDelete