Intervariability in radiographic parameters and general evaluation of a low-dose fluoroscopic technique in patients with idiopathic scoliosis.
Fluoroscopy
dosimetry
radiation safety
skeletal-axial
spine
technology assessments
Journal
Acta radiologica open
ISSN: 2058-4601
Titre abrégé: Acta Radiol Open
Pays: England
ID NLM: 101651010
Informations de publication
Date de publication:
Sep 2021
Sep 2021
Historique:
received:
18
02
2021
accepted:
14
08
2021
entrez:
1
10
2021
pubmed:
2
10
2021
medline:
2
10
2021
Statut:
epublish
Résumé
Radiographic images in adolescent idiopathic scoliosis (AIS) have a potential radiation-induced oncogenic effect; thus lowering radiation dose by using fluoroscopic imaging technique of low-dose fluoroscopic technique (LFT) which might be relevant for clinical evaluation. To compare radiographs of LFT with gold standard radiographs for AIS ordinary radiographic technique (ORT). Image quality was evaluated for LTF and ORT of a child phantom and two 3D-printed models (3DPSs) of AIS. We measured the primary physical characteristics of noise, contrast, spatial resolution, signal-to-noise ratio, and contrast-to-noise ratio. Three independent evaluators assessed the radiographs by observer-based methods of image criteria (ICS) and visual grading analysis(VGAS). Radiation doses were evaluated by the dose-area-product (DAP) of the 25 phantom radiographs. Reliability and agreement of Cobb's angle (CA) and other radiographic parameters were evaluated on the 3DPSs and reliability on 342 LFT. The average noise and contrast were approximately 15-fold higher for LFT. SNR and CNR were similar. Overall, ICS and VGAS were 3-fold higher for ORT than for LFT for L3 and similar for Th6. Reliability and agreement were good for the experimental LFT, and the interclass correlation coefficient for CA was 0.852 for the clinical LFT. The average DAP and effective dose for LFT were 8-fold lower than those for ORT. In conclusion, LFT is reliable for CA measurements and is thus useful for clinical outpatient follow-up evaluation. Even though the image quality is lower for LFT than ORT, the merits are the substantially reduced radiation and a lowered malignancy risk without compromising the measurement of Cobb's angle, thus following the principles of ALARA.
Sections du résumé
BACKGROUND
BACKGROUND
Radiographic images in adolescent idiopathic scoliosis (AIS) have a potential radiation-induced oncogenic effect; thus lowering radiation dose by using fluoroscopic imaging technique of low-dose fluoroscopic technique (LFT) which might be relevant for clinical evaluation.
PURPOSE
OBJECTIVE
To compare radiographs of LFT with gold standard radiographs for AIS ordinary radiographic technique (ORT).
MATERIAL AND METHODS
METHODS
Image quality was evaluated for LTF and ORT of a child phantom and two 3D-printed models (3DPSs) of AIS. We measured the primary physical characteristics of noise, contrast, spatial resolution, signal-to-noise ratio, and contrast-to-noise ratio. Three independent evaluators assessed the radiographs by observer-based methods of image criteria (ICS) and visual grading analysis(VGAS). Radiation doses were evaluated by the dose-area-product (DAP) of the 25 phantom radiographs. Reliability and agreement of Cobb's angle (CA) and other radiographic parameters were evaluated on the 3DPSs and reliability on 342 LFT.
RESULTS
RESULTS
The average noise and contrast were approximately 15-fold higher for LFT. SNR and CNR were similar. Overall, ICS and VGAS were 3-fold higher for ORT than for LFT for L3 and similar for Th6. Reliability and agreement were good for the experimental LFT, and the interclass correlation coefficient for CA was 0.852 for the clinical LFT. The average DAP and effective dose for LFT were 8-fold lower than those for ORT.
CONCLUSION
CONCLUSIONS
In conclusion, LFT is reliable for CA measurements and is thus useful for clinical outpatient follow-up evaluation. Even though the image quality is lower for LFT than ORT, the merits are the substantially reduced radiation and a lowered malignancy risk without compromising the measurement of Cobb's angle, thus following the principles of ALARA.
Identifiants
pubmed: 34594575
doi: 10.1177/20584601211043258
pii: 10.1177_20584601211043258
pmc: PMC8477696
doi:
Types de publication
Journal Article
Langues
eng
Pagination
20584601211043258Informations de copyright
© The Author(s) 2021.
Déclaration de conflit d'intérêts
Declaration of conflicting interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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