OBJECTIVE: This study aimed (1) to perform a systematic review on scanning parameters and contrast medium (CM) reduction methods used in prospectively electrocardiography (ECG-triggered low tube voltage coronary CT angiography (CCTA), (2) to compare the achievable dose reduction and image quality and (3) to propose appropriate scanning techniques and CM administration methods. METHODS: A systematic search was performed in PubMed, the Cochrane library, CINAHL, Web of Science, ScienceDirect and Scopus, where 20 studies were selected for analysis of scanning parameters and CM reduction methods. RESULTS: The mean effective dose (HE) ranged from 0.31 to 2.75 mSv at 80 kVp, 0.69 to 6.29 mSv at 100 kVp and 1.53 to 10.7 mSv at 120 kVp. Radiation dose reductions of 38 to 83% at 80 kVp and 3 to 80% at 100 kVp could be achieved with preserved image quality. Similar vessel contrast enhancement to 120 kVp could be obtained by applying iodine delivery rate (IDR) of 1.35 to 1.45 g s-1 with total iodine dose (TID) of between 10.9 and 16.2 g at 80 kVp and IDR of 1.08 to 1.70 g s-1 with TID of between 18.9 and 20.9 g at 100 kVp. CONCLUSION: This systematic review found that radiation doses could be reduced to a rate of 38 to 83% at 80 kVp, and 3 to 80% at 100 kVp without compromising the image quality. Advances in knowledge: The suggested appropriate scanning parameters and CM reduction methods can be used to help users in achieving diagnostic image quality with reduced radiation dose.
OBJECTIVE: This study aimed (1) to perform a systematic review on scanning parameters and contrast medium (CM) reduction methods used in prospectively electrocardiography (ECG-triggered low tube voltage coronary CT angiography (CCTA), (2) to compare the achievable dose reduction and image quality and (3) to propose appropriate scanning techniques and CM administration methods. METHODS: A systematic search was performed in PubMed, the Cochrane library, CINAHL, Web of Science, ScienceDirect and Scopus, where 20 studies were selected for analysis of scanning parameters and CM reduction methods. RESULTS: The mean effective dose (HE) ranged from 0.31 to 2.75 mSv at 80 kVp, 0.69 to 6.29 mSv at 100 kVp and 1.53 to 10.7 mSv at 120 kVp. Radiation dose reductions of 38 to 83% at 80 kVp and 3 to 80% at 100 kVp could be achieved with preserved image quality. Similar vessel contrast enhancement to 120 kVp could be obtained by applying iodine delivery rate (IDR) of 1.35 to 1.45 g s-1 with total iodine dose (TID) of between 10.9 and 16.2 g at 80 kVp and IDR of 1.08 to 1.70 g s-1 with TID of between 18.9 and 20.9 g at 100 kVp. CONCLUSION: This systematic review found that radiation doses could be reduced to a rate of 38 to 83% at 80 kVp, and 3 to 80% at 100 kVp without compromising the image quality. Advances in knowledge: The suggested appropriate scanning parameters and CM reduction methods can be used to help users in achieving diagnostic image quality with reduced radiation dose.
Authors: Daniele Andreini; Saima Mushtaq; Edoardo Conte; Chiara Segurini; Marco Guglielmo; Maria Petullà; Valentina Volpato; Andrea Annoni; Andrea Baggiano; Alberto Formenti; Antonio L Bartorelli; Cesare Fiorentini; Mauro Pepi Journal: J Cardiovasc Comput Tomogr Date: 2016-06-15
Authors: Wei-Hua Yin; Bin Lu; Jian-Bo Gao; Pei-Ling Li; Kai Sun; Zhi-Feng Wu; Wen-Jie Yang; Xiao-Qin Zhang; Min-Wen Zheng; Andrew D McQuiston; Felix G Meinel; Uwe Joseph Schoepf Journal: J Cardiovasc Comput Tomogr Date: 2015-01-22
Authors: Ernesto Di Cesare; Antonio Gennarelli; Alessandra Di Sibio; Valentina Felli; Marco Perri; Alessandra Splendiani; Giovanni Luca Gravina; Antonio Barile; Carlo Masciocchi Journal: Radiol Med Date: 2016-05-12 Impact factor: 3.469
Authors: Sock Keow Tan; Kwan Hoong Ng; Chai Hong Yeong; Raja Rizal Azman Raja Aman; Fadhli Mohamed Sani; Yang Faridah Abdul Aziz; Zhonghua Sun Journal: Quant Imaging Med Surg Date: 2019-04