The effect of a pre-reconstruction process in a filtered back projection reconstruction on an image quality of a low tube voltage computed tomography.

Masaki Takemitsu, Shohei Kudomi, Kazuki Takegami, Takuya Uehara

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Article in Radiological physics and technology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 authors.

Masaki TakemitsuDepartment of Radiological Technology, Yamaguchi University Hospital, Yamaguchi, 755-8505, Japan. take-555@yamaguchi-u.ac.jp.

Shohei KudomiDepartment of Radiological Technology, Yamaguchi University Hospital, Yamaguchi, 755-8505, Japan.

Kazuki TakegamiDepartment of Radiological Technology, Yamaguchi University Hospital, Yamaguchi, 755-8505, Japan.

Takuya UeharaDepartment of Radiological Technology, Yamaguchi University Hospital, Yamaguchi, 755-8505, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aims to evaluate the effect of pre-reconstruction process for low tube voltage computed tomography (CT) on image quality of filtered back projection (FBP) reconstruction. Small and large quality assurance water phantoms (19 and 33 cm diameter) were scanned on a third-generation dual-source CT with 70 kVp and 120 kVp at various dose levels. Image quality was assessed in terms of the noise power spectrum (NPS) and task-based transfer function (TTF). NPSs and TTFs in the small phantom were comparable between 70 and 120 kVp protocols. In the large phantom, the curves of the NPS changed and the TTF decreased even at the high-dose levels for 70 kVp protocol compared to 120 kVp protocol. Our results indicated that the pre-reconstruction process is performed in low tube voltage CT for large objects even for the FBP reconstruction and has an effect on the image quality.

Indexed as

AlgorithmsTomography, X-Ray ComputedPhantoms, ImagingRadiation DosageRadiographic Image Interpretation, Computer-AssistedComputed tomographyFiltered back projection reconstructionLow tube voltage CT

Identifiers

PMID38100019

DOI10.1007/s12194-023-00764-9

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.