Dose reference levels in cardiac CT scan

Dose reference level is the level used for the dose that does not lead to adverse effects . usually studies in this field using multiple dose including overdose. In the case of several studies that deal with different effects the lowest level is determined that does not cause significant damage, then the level is divided along with the differences in sensitivity among Humans . The processes and steps towards establishing DRLs are likely to involve many players, including the imaging facilities, the health authority, the professional bodies, and the regulatory body. In particular there should be collective ‘ownership’ of the DRLs in deciding on what procedures and what size groups will be used, how the data will be collected, who will manage the data, and when the DRLs should be reviewed and updated. CT has been utilized for a) coronary angiography (coronary CTA) and b) coronary calcium scoring. The coronary arteries had conventionally been visualized using invasive coronary angiography that requires inserting a very small tube (catheter) into a blood vessel in the groin or arm, injecting a contrast agent when the catheter tip is at a desired location, and taking pictures under X-ray guidance. The coronary arteries can alternatively be visualized using modern CT scanning. This is usually done with multi-detector CT (MDCT) but was earlier also done with electron beam CT (EBCT). Similarly coronary calcification scoring is done either using MDCT (earlier also with EBCT). Coro...
Source: radRounds - Category: Radiology Authors: Source Type: blogs