Reduced-dose ct protocol for the assessment of cerebral vasospasm

Bricout, Nicolas; Estrade, Laurent; Boustia, Fakhreddine; Kalsoum, E.; Pruvo, Jean-Pierre; Leclerc, Xavier

Document type :

Article dans une revue scientifique: Article original

DOI :

10.1007/s00234-015-1585-6

PMID :

26315026

Permalink :

http://hdl.handle.net/20.500.12210/16010

Title :

Reduced-dose ct protocol for the assessment of cerebral vasospasm

Author(s) :

Bricout, Nicolas [Auteur]
Estrade, Laurent [Auteur]
Boustia, Fakhreddine [Auteur]
Kalsoum, E. [Auteur]
Pruvo, Jean-Pierre [Auteur]

Troubles cognitifs dégénératifs et vasculaires - U 1171 - EA 1046 [TCDV]
Troubles cognitifs dégénératifs et vasculaires - U 1171 - EA 1046 [TCDV]
Troubles cognitifs dégénératifs et vasculaires - U1171
Leclerc, Xavier [Auteur]

Troubles cognitifs dégénératifs et vasculaires - U 1171 - EA 1046 [TCDV]
Troubles cognitifs dégénératifs et vasculaires - U1171
Troubles cognitifs dégénératifs et vasculaires - U 1171 - EA 1046 [TCDV]

Journal title :

Neuroradiology

Abbreviated title :

Neuroradiology

Volume number :

Pages :

1211-1218

Publication date :

2015-12-01

ISSN :

0028-3940

English keyword(s) :

Cerebral perfusion
Radiation dose
Computed tomography
Vasospasm

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

BACKGROUND: Despite the increased radiation dose, multimodal CT including noncontrast CT (NCT), CT angiography (CTA), and perfusion CT (PCT) remains a useful tool for the diagnosis of delayed cerebral ischemia (DCI) after ...
Show more >BACKGROUND: Despite the increased radiation dose, multimodal CT including noncontrast CT (NCT), CT angiography (CTA), and perfusion CT (PCT) remains a useful tool for the diagnosis of delayed cerebral ischemia (DCI) after aneurysmal subarachnoid hemorrhage (aSAH). The aim of this study was to assess the radiation dose and the image quality between a standard-dose and a reduced-dose multimodal CT protocol. METHODS: The study group consisted of 26 aSAH patients with a suspicion of DCI on clinical examination and transcranial doppler. Two different CT protocols were used: a standard-dose protocol (NCT 120 kV, 350 mAs; CTA 100 kV, 250 mAs; PCT 80 kV, 200 mAs) from August 2011 to October 2013 (n = 13) and a reduced-dose protocol (NCT 100 kV, 400 mAs; CTA 100 kV, 220 mAs; PCT 80 kV, 180 mAs) from November 2013 to May 2014 (n = 13). Dose-length product (DLP), effective dose, volume CT dose index (CTDI), signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), and overall image quality were determined for each examination. RESULTS: The overall image quality was judged as good or excellent in all cases. The reduced-dose protocol allowed a 15 % decrease in both the median total DLP (2438 vs 2898 mGy cm, p < 0.0001) and the effective dose as well as a significant decrease in median CTDI of 23, 31, and 10 % for NCT, CTA, and CTP, respectively. This dose reduction did not result in significant alteration of SNR (except for NCT) or CNR between groups. CONCLUSIONS: The present study showed that the reduced-dose multimodal CT protocol enabled a significant reduction of radiation dose without image quality impairment.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

CHU Lille
CNRS
Inserm
Université de Lille

Collections :

Lille Neurosciences & Cognition (LilNCog) - U 1172

Research team(s) :

Troubles cognitifs dégénératifs et vasculaires

Submission date :

2019-11-27T13:03:49Z

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