Pharmacological control of head motion during cerebral blood flow imaging with CT or MRI

Sesay, Musa; Jeannin, Aude; Moonen, Chrit; Dousset, V.; Maurette, P.

doi:10.1016/j.neurad.2008.10.004

Cited by 3 publications

(1 citation statement)

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“…While it is indeed well recognized that head movement is a common problem during CTP image acquisition of stroke patients [15][16][17][18], automated procedures for exclusion of unsuited CTP data are lacking, and substantial manual work by radiologists is required.…”

Section: Introductionmentioning

confidence: 99%

Automatic Detection of CT Perfusion Datasets Unsuitable for Analysis due to Head Movement of Acute Ischemic Stroke Patients

Fahmi

Marquering

Streekstra

et al. 2014

Journal of Healthcare Engineering

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Head movement during brain Computed Tomography Perfusion (CTP) can deteriorate perfusion analysis quality in acute ischemic stroke patients. We developed a method for automatic detection of CTP datasets with excessive head movement, based on 3D image-registration of CTP, with non-contrast CT providing transformation parameters. For parameter values exceeding predefined thresholds, the dataset was classified as 'severely moved'. Threshold values were determined by digital CTP phantom experiments. The automated selection was compared to manual screening by 2 experienced radiologists for 114 brain CTP datasets. Based on receiver operator characteristics, optimal thresholds were found of respectively 1.0°, 2.8° and 6.9° for pitch, roll and yaw, and 2.8 mm for z-axis translation. The proposed method had a sensitivity of 91.4% and a specificity of 82.3%. This method allows accurate automated detection of brain CTP datasets that are unsuitable for perfusion analysis.

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Section: Introductionmentioning

confidence: 99%