Louise Hauge Matzen

Radiographic observers' ability to recognize patient movement during cone beam CT

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Radiographic observers' ability to recognize patient movement during cone beam CT. / Spin-Neto, Rubens; Matzen, L H; Schropp, L; Liedke, G S; Gotfredsen, E; Wenzel, A.

I: Dentomaxillofacial Radiology, Bind 43, Nr. 4, 26.02.2014, s. 20130449.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

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Spin-Neto, Rubens ; Matzen, L H ; Schropp, L ; Liedke, G S ; Gotfredsen, E ; Wenzel, A. / Radiographic observers' ability to recognize patient movement during cone beam CT. I: Dentomaxillofacial Radiology. 2014 ; Bind 43, Nr. 4. s. 20130449.

Bibtex

@article{2569df340e6a46679aa73004b0c53200,
title = "Radiographic observers' ability to recognize patient movement during cone beam CT",
abstract = "Objectives: To assess radiographic observers' ability to recognize patient movement during cone beam CT and to decide early termination of the examination. Methods: 100 patients were video-recorded during cone beam CT examination. Patients' videos were cropped twice: fitting the active 20-s examination time or the initial non-radiation 3 s of the examination. x- and y-coordinates of pre-defined points marked on the patient's face were used to define the reference standard for movement in the 20-s videos. A sample of 40 non-moving and 20 moving patients was selected. Eight observers scored the videos. The 3-s videos were scored: 0, the patient did not move; 1, the patient moved and the examination should be terminated. The 20-s videos were scored: 0, the patient did not move; 1, the patient moved. Re-assessment of 15% of the videos provided intra-observer reproducibility. The 20-s videos were compared with the reference standard providing sensitivity and specificity values (movement/non-movement recognition). The scores of the 3-s videos were compared with the scores of the 20-s videos. Results: Intra- and interobserver reproducibility ranged from substantial to almost perfect for both videos. The 20-s videos allowed patient movement recognition with a high specificity and a medium to high sensitivity. The 3-s videos allowed early termination of the examination with a small number of incorrect positive scores. The majority of the patients scored as moving in the 20-s videos were detected in the 3-s videos. Conclusions: By observing video recordings, trained observers are able to recognize patient movement during cone beam CT examination with high specificity and to decide an early termination of the examination.",
author = "Rubens Spin-Neto and Matzen, {L H} and L Schropp and Liedke, {G S} and E Gotfredsen and A Wenzel",
year = "2014",
month = feb,
day = "26",
doi = "10.1259/dmfr.20130449",
language = "English",
volume = "43",
pages = "20130449",
journal = "Dentomaxillofacial Radiology",
issn = "0250-832X",
publisher = "British Institute of Radiology",
number = "4",

}

RIS

TY - JOUR

T1 - Radiographic observers' ability to recognize patient movement during cone beam CT

AU - Spin-Neto, Rubens

AU - Matzen, L H

AU - Schropp, L

AU - Liedke, G S

AU - Gotfredsen, E

AU - Wenzel, A

PY - 2014/2/26

Y1 - 2014/2/26

N2 - Objectives: To assess radiographic observers' ability to recognize patient movement during cone beam CT and to decide early termination of the examination. Methods: 100 patients were video-recorded during cone beam CT examination. Patients' videos were cropped twice: fitting the active 20-s examination time or the initial non-radiation 3 s of the examination. x- and y-coordinates of pre-defined points marked on the patient's face were used to define the reference standard for movement in the 20-s videos. A sample of 40 non-moving and 20 moving patients was selected. Eight observers scored the videos. The 3-s videos were scored: 0, the patient did not move; 1, the patient moved and the examination should be terminated. The 20-s videos were scored: 0, the patient did not move; 1, the patient moved. Re-assessment of 15% of the videos provided intra-observer reproducibility. The 20-s videos were compared with the reference standard providing sensitivity and specificity values (movement/non-movement recognition). The scores of the 3-s videos were compared with the scores of the 20-s videos. Results: Intra- and interobserver reproducibility ranged from substantial to almost perfect for both videos. The 20-s videos allowed patient movement recognition with a high specificity and a medium to high sensitivity. The 3-s videos allowed early termination of the examination with a small number of incorrect positive scores. The majority of the patients scored as moving in the 20-s videos were detected in the 3-s videos. Conclusions: By observing video recordings, trained observers are able to recognize patient movement during cone beam CT examination with high specificity and to decide an early termination of the examination.

AB - Objectives: To assess radiographic observers' ability to recognize patient movement during cone beam CT and to decide early termination of the examination. Methods: 100 patients were video-recorded during cone beam CT examination. Patients' videos were cropped twice: fitting the active 20-s examination time or the initial non-radiation 3 s of the examination. x- and y-coordinates of pre-defined points marked on the patient's face were used to define the reference standard for movement in the 20-s videos. A sample of 40 non-moving and 20 moving patients was selected. Eight observers scored the videos. The 3-s videos were scored: 0, the patient did not move; 1, the patient moved and the examination should be terminated. The 20-s videos were scored: 0, the patient did not move; 1, the patient moved. Re-assessment of 15% of the videos provided intra-observer reproducibility. The 20-s videos were compared with the reference standard providing sensitivity and specificity values (movement/non-movement recognition). The scores of the 3-s videos were compared with the scores of the 20-s videos. Results: Intra- and interobserver reproducibility ranged from substantial to almost perfect for both videos. The 20-s videos allowed patient movement recognition with a high specificity and a medium to high sensitivity. The 3-s videos allowed early termination of the examination with a small number of incorrect positive scores. The majority of the patients scored as moving in the 20-s videos were detected in the 3-s videos. Conclusions: By observing video recordings, trained observers are able to recognize patient movement during cone beam CT examination with high specificity and to decide an early termination of the examination.

U2 - 10.1259/dmfr.20130449

DO - 10.1259/dmfr.20130449

M3 - Journal article

C2 - 24660954

VL - 43

SP - 20130449

JO - Dentomaxillofacial Radiology

JF - Dentomaxillofacial Radiology

SN - 0250-832X

IS - 4

ER -