Third-generation iterative reconstruction on a dual-source, high-pitch, low-dose chest CT protocol with tin filter for spectral shaping at 100 kV: a study on a small series of COVID-19 patients

Objectives To investigate the role of third-generation iterative reconstruction (ADMIRE) in dual-source, high-pitch chest CT protocol with spectral shaping at 100 kVp in Coronavirus disease 2019 (COVID-19). Methods Confirmed COVID-19 inpatients undergoing to unenhanced chest CT were scanned with a d...

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Bibliographic Details
Published in:Radiologia medica 2021-03, Vol.126 (3), p.388-398
Main Authors: Agostini, Andrea, Borgheresi, Alessandra, Carotti, Marina, Ottaviani, Letizia, Badaloni, Myriam, Floridi, Chiara, Giovagnoni, Andrea
Format: Article
Language:English
Subjects:
Aged
Body size
Chest
Chest Radiology
Computed tomography
Coronaviruses
COVID-19
COVID-19 - diagnostic imaging
Diagnostic Radiology
Female
Humans
Image Processing, Computer-Assisted
Image quality
Image reconstruction
Imaging
Interventional Radiology
Lung - diagnostic imaging
Male
Medical imaging
Medicine
Medicine & Public Health
Middle Aged
Neuroradiology
Radiation Dosage
Radiology
Retrospective Studies
Signal to noise ratio
Spectra
Tomography, X-Ray Computed
Ultrasound
Viral diseases
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Summary:Objectives To investigate the role of third-generation iterative reconstruction (ADMIRE) in dual-source, high-pitch chest CT protocol with spectral shaping at 100 kVp in Coronavirus disease 2019 (COVID-19). Methods Confirmed COVID-19 inpatients undergoing to unenhanced chest CT were scanned with a dual-energy acquisition (DECT, 90/150Sn kV) and a dual-source, high-pitch acquisition with tin-filtered 100 kVp (LDCT). On the DECT with ADMIRE 3 (DECT3) were evaluated the pulmonary findings and their extension (25-point score). Two radiologists in consensus evaluated with 5-point scales the overall image quality, the anatomical structures, and the elementary findings on LDCT reconstructed with filtered backprojection (LDCT0), with ADMIRE 3 (LDCT3) and 5 (LDCT5), and on DECT3. The signal-to-noise ratio (SNR), the body mass index, the exposure times, and the radiation doses were recorded. Results Seventy-five patients (57 M/18F; median age: 63 y.o.) were included, with median pulmonary extension of 13/25 points. The imaging findings were detected in proportion comparable to the available literature. The ADMIRE significantly improved the SNR in LDCT ( p  
ISSN:0033-8362
1826-6983
DOI:10.1007/s11547-020-01298-5