Dual energy CT (DECT) of the liver: conventional versus virtual unenhanced images View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2010-07-11

AUTHORS

Carlo Nicola De Cecco, Vitaliano Buffa, Stefano Fedeli, Monica Luzietti, Andrea Vallone, Roberto Ruopoli, Vittorio Miele, Marco Rengo, Pasquale Paolantonio, Michelangelo Maurizi Enrici, Andrea Laghi, Vincenzo David

ABSTRACT

ObjectiveTo compare image quality and noise of conventional unenhanced (CU) and virtual unenhanced (VU) images in patients who underwent hepatic dual energy computed tomography (DECT) and to assess potential radiation dose reduction.Materials and methodsForty consecutive patients were studied. Mean CU and VU image quality and noise were analyzed by two blinded radiologists using a five-point grade scale. The effective radiation dose of a triple-phase protocol (CU, arterial and DE portal phases) were compared with that of a dual-phase protocol (arterial and DE portal phases).ResultsNo significant difference in mean image quality was observed between VU (3.92 ± 0.85) and CU images (4.20 ± 0.72). A significant difference in mean image noise was observed between VU and CU (P < 0.01). The dose reduction achieved by omitting the unenhanced acquisition was 30.47 ± 7.07% (P < 0.01). In 6 patients, a complete VU liver image was not obtained.ConclusionsVU images can be obtained with similar image quality as CU. This approach favors a reduction in patient’s radiation exposure. Nevertheless, a complete abdominal DECT is possible only in patients with a low body mass index, due technical limitations of the present DECT systems. More... »

PAGES

2870-2875

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00330-010-1874-8

DOI

http://dx.doi.org/10.1007/s00330-010-1874-8

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1013610243

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/20623126


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34 CU images
35 ConclusionsVU images
36 Cu
37 DECT system
38 MethodsForty consecutive patients
39 ObjectiveTo
40 ResultsNo significant differences
41 VU image quality
42 VU liver image
43 abdominal dual-energy CT
44 acquisition
45 approach
46 blinded radiologists
47 body mass index
48 complete VU liver image
49 complete abdominal DECT
50 consecutive patients
51 differences
52 dose
53 dose reduction
54 dual energy
55 dual-energy CT
56 dual-phase protocol
57 due technical limitations
58 effective radiation dose
59 energy
60 energy CT
61 exposure
62 five-point grade scale
63 grade scale
64 hepatic dual energy
65 image noise
66 image quality
67 images
68 index
69 limitations
70 liver
71 liver images
72 lower body mass index
73 mass index
74 materials
75 mean Cu
76 mean image noise
77 mean image quality
78 noise
79 patients
80 potential radiation dose reduction
81 present DECT systems
82 protocol
83 quality
84 radiation dose
85 radiation dose reduction
86 radiation exposure
87 radiologists
88 reduction
89 scale
90 significant differences
91 similar image quality
92 system
93 technical limitations
94 tomography
95 triple-phase protocol
96 unenhanced acquisition
97 unenhanced images
98 virtual unenhanced images
99 vu
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