Koronarografija kompjutoriziranom tomografijom — tehnike snimanja i doze zračenja: rezultati Poliklinike SUNCE Split (CROSBI ID 300701)
Prilog u časopisu | stručni rad | međunarodna recenzija
Podaci o odgovornosti
Medaković, Petar ; Jukić, Mladen ; Lukenda, Josip ; Pavić, Ladislav
hrvatski
Koronarografija kompjutoriziranom tomografijom — tehnike snimanja i doze zračenja: rezultati Poliklinike SUNCE Split
Introduction: With 64 ≥ slice CT scanners, coronary computed tomography angiography (CCTA) has emerged as a useful diagnostic imaging modality for the assessment of coronary artery disease. It is considered appropriate for selected indications: A) patients with a low-tointermediate pretest probability for obstructive coronary artery disease (CAD) ; B) rapid evaluation of patients with chest pain in emergency ; C) by-pass analysis ; D) stent analysis. Aim: The aim is to present advantages of different CCTA techniques, dose reduction methods and to compare our results with the current literature. Materials and methods: During June 2011 and October 2014 we studied 215 consecutive patients with suspected CAD. CCTA was performed in all patient using a 64 slice CT scanner with two different (prospective and retrospective gatting) scanning protocols. Patients with heart rate (HR) >65 bpm were assigned for helical scanning (retrospective gatting) and patients with stable HR <65 bpm for step & shoot scanning (prospective gatting). Next inclusive parameter was specific clinical question or indication. Each patient with HR>65 bpm received beta-blockers two hours before the scan. Results: 215 CCTA were scanned: 186 step & shoot (prospective gatting) and 29 helical (retrospective gatting). The median value of radiation dose for step & shoot technique was 2, 5 mSv (0, 47 mSv-6, 44 mSv) and for helical: 4, 8 mSv (2, 1 mSv-7, 92 mSv). Conclusion: Applying different CCTA aquisition techniques helps to achieve maximal coronary dilatation and a low heart rate (<65 bpm). All benefits of the long diastolic phase are crucial to achieve the best possible image quality at the lowest patient radiation dose. Step & shoot aquisition technique is appropriate for patients with HR <65 bpm, younger, middle age patients and stent evaluation. Helical acquisition technique should be used in patients with HR >65bpm, elderly patients, if CT ventriculography is needed and analysis of coronary bridging (systolic and diastolic phase).
koronarografija kompjutoriziranim tomografijom, tehnike snimanja, doze zračenja
nije evidentirano
engleski
Coronary computed tomography angiography – acquisition techniques and radiation doses: results in SUNCE Polyclinic Split
Introduction: With 64 ≥ slice CT scanners, coronary computed tomography angiography (CCTA) has emerged as a useful diagnostic imaging modality for the assessment of coronary artery disease. It is considered appropriate for selected indications: A) patients with a low-tointermediate pretest probability for obstructive coronary artery disease (CAD) ; B) rapid evaluation of patients with chest pain in emergency ; C) by-pass analysis ; D) stent analysis. Aim: The aim is to present advantages of different CCTA techniques, dose reduction methods and to compare our results with the current literature. Materials and methods: During June 2011 and October 2014 we studied 215 consecutive patients with suspected CAD. CCTA was performed in all patient using a 64 slice CT scanner with two different (prospective and retrospective gatting) scanning protocols. Patients with heart rate (HR) >65 bpm were assigned for helical scanning (retrospective gatting) and patients with stable HR <65 bpm for step & shoot scanning (prospective gatting). Next inclusive parameter was specific clinical question or indication. Each patient with HR>65 bpm received beta-blockers two hours before the scan. Results: 215 CCTA were scanned: 186 step & shoot (prospective gatting) and 29 helical (retrospective gatting). The median value of radiation dose for step & shoot technique was 2, 5 mSv (0, 47 mSv-6, 44 mSv) and for helical: 4, 8 mSv (2, 1 mSv-7, 92 mSv). Conclusion: Applying different CCTA aquisition techniques helps to achieve maximal coronary dilatation and a low heart rate (<65 bpm). All benefits of the long diastolic phase are crucial to achieve the best possible image quality at the lowest patient radiation dose. Step & shoot aquisition technique is appropriate for patients with HR <65 bpm, younger, middle age patients and stent evaluation. Helical acquisition technique should be used in patients with HR >65bpm, elderly patients, if CT ventriculography is needed and analysis of coronary bridging (systolic and diastolic phase).
coronary computed tomography angiography, acquisition techniques, radiation doses.
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano