Third-Generation Dual-Source Computed Tomography for Coronary Angiography With Individually Tailored Scan Protocols Can Achieve a Low Radiation Dose With Good Image Quality in Unselected Patients

Basar Y., AKBAŞ T., ALİS D. C., Ulus S., Topel C., Sanli D. E. T., ...More

JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY, vol.46, no.1, pp.41-49, 2022 (SCI-Expanded) identifier identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 46 Issue: 1
  • Publication Date: 2022
  • Doi Number: 10.1097/rct.0000000000001229
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Biotechnology Research Abstracts, CAB Abstracts, EMBASE, MEDLINE, Veterinary Science Database
  • Page Numbers: pp.41-49
  • Keywords: advanced modeled iterative reconstruction, body mass index, coronary computed tomography angiography, low kilovoltage, radiation dose, PITCH SPIRAL ACQUISITION, STEP-AND-SHOOT, CT ANGIOGRAPHY, CARDIAC CT, DIAGNOSTIC-ACCURACY, CONTRAST-MEDIUM, METAANALYSIS, EXPOSURE
  • Acibadem Mehmet Ali Aydinlar University Affiliated: Yes


Objective To explore the image quality and radiation exposure associated with coronary angiography obtained with a third-generation dual-source computed tomography, using body mass index (BMI)- and heart rate (HR)-adapted protocols in real-world patients. Methods Three scan protocols were implemented with regard to HR: prospective turbo high-pitch spiral, sequential, and retrospective spiral modes. We adapted the reference kilovoltage value according to BMI. Image quality was evaluated using a 4-point scale, and effective dose estimates were calculated using the dose-length product. Results Among the 896 patients, 417 (46.54%), 433 (48.32%), and 45 (5.02%) were imaged using prospective turbo high-pitch spiral, sequential, and retrospective spiral modes, respectively. The median BMI was 27.3 (25-30.4) kg/m(2), and the effective dose was 0.65 mSv (interquartile range, 0.33-1.56 mSv). Only 32 of 896 examinations (3.5%) had poor image quality. Conclusions Computed tomography angiography with BMI- and HR-tailored protocols offers good image quality with low radiation dose in unselected patients.