Dose Length Product to Effective Dose, (DLP to mSv)

Описание к видео Dose Length Product to Effective Dose, (DLP to mSv)

DLP to mSv (Dose Length Product to Effective Dose) conversion in CT is a useful approximation that takes the dose from that measured in a plastic phantom to an effective dose. The CTDI (computed tomography dose index) is measured as the dose deposited in a plastic phantom for 16cm [heads] and 32cm [bodies]. The CTDI does not take into account the length along the patient's SI direction that is irradiated. The DLP is the CTDI*length of irradiation. Finally from the DLP a conversion is made to the effective dose based on an approximate weighting factor k that depends on the patients age and the part of the body that is irradiated.

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