title: Comparison of image quality, and diagnostic interpretability of a new volumetric high temporal resolution scanner versus 64-slice MDCT.
abstract: We evaluated the performance of a new volume computed tomographic (CT) scanner with regards to image quality and signal homogeneity. Twenty-four subjects were prospectively enrolled. Subjects had prior imaging with rate control. Quantitative analyses performed placing regions of interest in myocardium, blood pool, and aorta. Image quality and diagnostic interpretability were assessed using Likert scales. Median heart rate was 60 and 57 bpm for volume and 64-slice coronary CT angiography (P=.02). Improvement in homogeneity was demonstrated within myocardium (30% improvement), blood pool (73%), and aorta (73%). Improvement in image quality observed at per-patient/per-segment level. Pilot study confirmed improvements in signal homogeneity and diagnostic interpretability, despite imaging at higher heart rates.
authors.affiliation: St Paul's Hospital, Vancouver, BC, Canada.
authors.forename: Rekha
authors.initials: R
authors.lastname: Raju
authors.affiliation: Radiology Associates of South Florida, FL, USA.
authors.forename: Ricardo C
authors.initials: RC
authors.lastname: Cury
authors.affiliation: St Paul's Hospital, Vancouver, BC, Canada.
authors.forename: Bruce
authors.initials: B
authors.lastname: Precious
authors.affiliation: St Paul's Hospital, Vancouver, BC, Canada.
authors.forename: Philipp
authors.initials: P
authors.lastname: Blanke
authors.affiliation: St Paul's Hospital, Vancouver, BC, Canada.
authors.forename: Christopher
authors.initials: C
authors.lastname: Naoum
authors.affiliation: St Paul's Hospital, Vancouver, BC, Canada.
authors.forename: Chesnal
authors.initials: C
authors.lastname: Arepalli
authors.affiliation: Radiology Associates of South Florida, FL, USA.
authors.forename: Juan C
authors.initials: JC
authors.lastname: Batlle
authors.affiliation: St Paul's Hospital, Vancouver, BC, Canada.
authors.forename: Darra
authors.initials: D
authors.lastname: Murphy
authors.affiliation: St Paul's Hospital, Vancouver, BC, Canada.
authors.forename: Cameron
authors.initials: C
authors.lastname: Hague
authors.affiliation: St Paul's Hospital, Vancouver, BC, Canada. Electronic address: jleipsic@providencehealth.bc.ca.
authors.forename: Jonathon A
authors.initials: JA
authors.lastname: Leipsic
mesh_terms: D000328:Adult; D000368:Aged; D017023:Coronary Angiography / Q000379:methods*; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging*; D003331:Coronary Vessels / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography / Q000592:standards*; D010865:Pilot Projects; D011446:Prospective Studies; D015203:Reproducibility of Results
keywords: Diagnostic interpretability; Image quality; Signal homogeneity; Volumetric high temporal resolution scanner