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Naslov:Image reconstruction using small-voxel size improves small lesion detection for positron emission tomography
Avtorji:ID Rep, Sebastijan (Avtor)
ID Tomše, Petra (Avtor)
ID Jensterle, Luka (Avtor)
ID Jarabek, Leon (Avtor)
ID Zaletel, Katja (Avtor)
ID Ležaič, Luka (Avtor)
Datoteke:URL URL - Izvorni URL, za dostop obiščite https://doi.org/10.2478/raon-2022-0015
 
.pdf PDF - Predstavitvena datoteka, prenos (883,98 KB)
MD5: F1A40AE03DB7620437533A597D66D79A
 
Jezik:Angleški jezik
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:Logo OI - Onkološki inštitut Ljubljana
Povzetek:Background. PET/CT imaging is widely used in oncology and provides both metabolic and anatomic information. Because of the relatively poor spatial resolution of PET, the detection of small lesions is limited. The low spatial resolution introduces the partial-volume effect (PVE) which negatively affects images both qualitatively and quantitatively. The aim of the study was to investigate the effect of small-voxel (2 mm in-line pixel size) vs. standard-voxel (4 mm in-line pixel size) reconstruction on lesion detection and image quality in a range of activity ratios. Materials and methods. The National Electrical Manufacturers Association (NEMA) body phantom and the Micro Hollow-Sphere phantom spheres were filled with a solution of [18F]fluorodeoxyglucose ([18F]FDG) in sphere-to-background ratios of 2:1, 3:1, 4:1 and 8:1. In all images reconstructed with 2 mm and 4 mm in-line pixel size the visual lesion delineation, contrast recovery coefficient (CRC) and contrast-to-noise ratio (CNR) were evaluated. Results. For smaller (≤ 13 mm) phantom spheres, significantly higher CRC and CNR using small-voxel reconstructions were found, also improving visual lesion delineation. CRC did not differ significantly for larger (≥ 17 mm) spheres using 2 mm and 4 mm in-line pixel size, but CNR was significantly lower; however, lower CNR did not affect visual lesion delineation. Conclusions. Small-voxel reconstruction consistently improves precise small lesion delineation, lesion contrast and image quality.
Ključne besede:PET/CT, voxel size, contrast recovery coefficient, contrast-to-noise ratio
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.01.2022
Založnik:Association of Radiology and Oncology
Leto izida:2022
Št. strani:str. 142-149
Številčenje:Vol. 56, no. 2
Izvor:Ljubljana
PID:20.500.12556/DiRROS-19758 Novo okno
UDK:616-071
ISSN pri članku:1318-2099
DOI:10.2478/raon-2022-0015 Novo okno
COBISS.SI-ID:102526211 Novo okno
Avtorske pravice:by Authors
Opomba:Soavtorji: Petra Tomse, Luka Jensterle, Leon Jarabek, Katja Zaletel, Luka Lezaic; Objava na spletu 13. 4. 2022;
Datum objave v DiRROS:24.07.2024
Število ogledov:473
Število prenosov:283
Metapodatki:XML DC-XML DC-RDF
:
REP, Sebastijan, TOMŠE, Petra, JENSTERLE, Luka, JARABEK, Leon, ZALETEL, Katja in LEŽAIČ, Luka, 2022, Image reconstruction using small-voxel size improves small lesion detection for positron emission tomography. Radiology and oncology [na spletu]. 2022. Vol. 56, no. 2, p. 142–149. [Dostopano 2 april 2025]. DOI 10.2478/raon-2022-0015. Pridobljeno s: https://dirros.openscience.si/IzpisGradiva.php?lang=slv&id=19758
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Gradivo je del revije

Naslov:Radiology and oncology
Skrajšan naslov:Radiol. oncol.
Založnik:Slovenian Medical Society - Section of Radiology, Croatian Medical Association - Croatian Society of Radiology
ISSN:1318-2099
COBISS.SI-ID:32649472 Novo okno

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:PET/CT, velikost voksela, koeficient obnovitve kontrasta, razmerje kontrast in šum


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