PURPOSE: To assess radiation exposure of patients undergoing Multi-Row Detector CT (Multi-Slice CT, MSCT) of the heart. MATERIAL AND METHODS: Four different cardiac MSCT protocols with changing slice collimation (4 x 1, and 4 x 2.5 mm), and pitch-factor (1.5, 1.8, and 4) were examined. An anthropomorphic Alderson-Rando phantom was equipped with LiF-thermoluminescent dosimeters at several organ sites, and effective doses were calculated using ICRP-weighting factors. These data were compared to data from standard MSCT of chest and abdomen. RESULTS: Effective dose in different protocols for cardiac MSCT varies from 2.8 to 10.3 mSv (male), and from 3.6 to 12.7 mSv (female). In protocols with thin collimation and low pitch or a combination of several heart examinations, radiation exposure may be comparable to the effective dose of standard MSCT of the chest (male: 11.9 mSv, female: 12.9 mSv) or the abdomen (male: 16.1 mSv, female: 15.7 mSv). Highest organ doses were found for the female breast (up to 46.6 mGy), and the lungs (up to 36.4 mGy) with surface doses as high as 54.3 mGy. CONCLUSIONS: Cardiac MSCT adds significantly to the radiation exposure of patients and can reach the effective dose applied by standard MSCT of chest or abdomen.
PURPOSE: To assess radiation exposure of patients undergoing Multi-Row Detector CT (Multi-Slice CT, MSCT) of the heart. MATERIAL AND METHODS: Four different cardiac MSCT protocols with changing slice collimation (4 x 1, and 4 x 2.5 mm), and pitch-factor (1.5, 1.8, and 4) were examined. An anthropomorphic Alderson-Rando phantom was equipped with LiF-thermoluminescent dosimeters at several organ sites, and effective doses were calculated using ICRP-weighting factors. These data were compared to data from standard MSCT of chest and abdomen. RESULTS: Effective dose in different protocols for cardiac MSCT varies from 2.8 to 10.3 mSv (male), and from 3.6 to 12.7 mSv (female). In protocols with thin collimation and low pitch or a combination of several heart examinations, radiation exposure may be comparable to the effective dose of standard MSCT of the chest (male: 11.9 mSv, female: 12.9 mSv) or the abdomen (male: 16.1 mSv, female: 15.7 mSv). Highest organ doses were found for the female breast (up to 46.6 mGy), and the lungs (up to 36.4 mGy) with surface doses as high as 54.3 mGy. CONCLUSIONS: Cardiac MSCT adds significantly to the radiation exposure of patients and can reach the effective dose applied by standard MSCT of chest or abdomen.
Authors: Martin Heuschmid; Julia K Rothfuss; Stephen Schroeder; Michael Fenchel; Norbert Stauder; Christof Burgstahler; Andreas Franow; Ronald S Kuzo; Axel Kuettner; Stephan Miller; Claus D Claussen; Andreas F Kopp Journal: Eur Radiol Date: 2005-10-08 Impact factor: 5.315
Authors: C Hohl; G Mühlenbruch; J E Wildberger; C Leidecker; C Süss; T Schmidt; R W Günther; A H Mahnken Journal: Eur Radiol Date: 2006-02-03 Impact factor: 5.315
Authors: Georg Mühlenbruch; Christian Hohl; Marco Das; Joachim E Wildberger; Christoph Suess; Ernst Klotz; Thomas Flohr; Ralf Koos; Christoph Thomas; Rolf W Günther; Andreas H Mahnken Journal: Eur Radiol Date: 2007-02-17 Impact factor: 5.315
Authors: B Jung; A H Mahnken; A Stargardt; J Simon; T G Flohr; S Schaller; R Koos; R W Günther; J E Wildberger Journal: Eur Radiol Date: 2003-10-21 Impact factor: 5.315
Authors: Andreas F Kopp; Axel Küttner; Tobias Trabold; Martin Heuschmid; Stephen Schröder; C D Claussen Journal: Eur Radiol Date: 2003-12 Impact factor: 7.034