Aneurysm Recurrence Volumetry Is More Sensitive than Visual Evaluation of Aneurysm Recurrences

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Aneurysm Recurrence Volumetry Is More Sensitive than Visual Evaluation of Aneurysm Recurrences. / Schönfeld, M H; Schlotfeldt, V; Forkert, N D; Goebell, E; Groth, M; Vettorazzi, E; Cho, Y D; Han, M H; Kang, H-S; Fiehler, J.

in: CLIN NEURORADIOL, Jahrgang 26, Nr. 1, 03.2016, S. 57-64.

Publikationen: SCORING: Beitrag in Fachzeitschrift/ZeitungSCORING: ZeitschriftenaufsatzForschungBegutachtung

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@article{b0b681b0f98a447cbd5402280adac167,
title = "Aneurysm Recurrence Volumetry Is More Sensitive than Visual Evaluation of Aneurysm Recurrences",
abstract = "PURPOSE: Considerable inter-observer variability in the visual assessment of aneurysm recurrences limits its use as an outcome parameter evaluating new coil generations. The purpose of this study was to compare visual assessment of aneurysm recurrences and aneurysm recurrence volumetry with an example dataset of HydroSoft coils (HSC) versus bare platinum coils (BPC).METHODS: For this retrospective study, 3-dimensional time-of-flight magnetic resonance angiography datasets acquired 6 and 12 months after endovascular therapy using BPC only or mainly HSC were analyzed. Aneurysm recurrence volumes were visually rated by two observersas well as quantified by subtraction of the datasets after intensity-based rigid registration.RESULTS: A total of 297 aneurysms were analyzed (BPC: 169, HSC: 128). Recurrences were detected by aneurysm recurrence volumetry in 9 of 128 (7.0 %) treated with HSC and in 24 of 169 (14.2 %) treated with BPC (odds ratio: 2.39, 95 % confidence interval: 1.05-5.48; P = 0.039). Aneurysm recurrence volumetry revealed an excellent correlation between observers (Cronbach's alpha = 0.93). In contrast, no significant difference in aneurysm recurrence was found for visual assessment (3.9 % in HSC cases and 4.7 % in BPC cases). Recurrences were observed in aneurysms smaller than the sample median in 10 of 33 (30.3 %) by aneurysm recurrence volumetry and in 1 of 13 (7.7 %) by visual assessment.CONCLUSIONS: Aneurysm recurrences were detected more frequently by aneurysm recurrence volumetry when compared with visual assessment. By using aneurysm recurrence volumetry, differences between treatment groups were detected with higher sensitivity and inter-observer validity probably because of the higher detection rate of recurrences in small aneurysms.",
keywords = "Clinical Competence, Female, Humans, Imaging, Three-Dimensional, Intracranial Aneurysm, Korea, Magnetic Resonance Angiography, Male, Middle Aged, Models, Statistical, Observer Variation, Pattern Recognition, Automated, Prevalence, Recurrence, Retrospective Studies, Risk Factors, Sensitivity and Specificity, Stents, Treatment Outcome, Comparative Study, Journal Article, Multicenter Study, Randomized Controlled Trial",
author = "Sch{\"o}nfeld, {M H} and V Schlotfeldt and Forkert, {N D} and E Goebell and M Groth and E Vettorazzi and Cho, {Y D} and Han, {M H} and H-S Kang and J Fiehler",
year = "2016",
month = mar,
doi = "10.1007/s00062-014-0330-6",
language = "English",
volume = "26",
pages = "57--64",
journal = "CLIN NEURORADIOL",
issn = "1869-1439",
publisher = "Springer Heidelberg",
number = "1",

}

RIS

TY - JOUR

T1 - Aneurysm Recurrence Volumetry Is More Sensitive than Visual Evaluation of Aneurysm Recurrences

AU - Schönfeld, M H

AU - Schlotfeldt, V

AU - Forkert, N D

AU - Goebell, E

AU - Groth, M

AU - Vettorazzi, E

AU - Cho, Y D

AU - Han, M H

AU - Kang, H-S

AU - Fiehler, J

PY - 2016/3

Y1 - 2016/3

N2 - PURPOSE: Considerable inter-observer variability in the visual assessment of aneurysm recurrences limits its use as an outcome parameter evaluating new coil generations. The purpose of this study was to compare visual assessment of aneurysm recurrences and aneurysm recurrence volumetry with an example dataset of HydroSoft coils (HSC) versus bare platinum coils (BPC).METHODS: For this retrospective study, 3-dimensional time-of-flight magnetic resonance angiography datasets acquired 6 and 12 months after endovascular therapy using BPC only or mainly HSC were analyzed. Aneurysm recurrence volumes were visually rated by two observersas well as quantified by subtraction of the datasets after intensity-based rigid registration.RESULTS: A total of 297 aneurysms were analyzed (BPC: 169, HSC: 128). Recurrences were detected by aneurysm recurrence volumetry in 9 of 128 (7.0 %) treated with HSC and in 24 of 169 (14.2 %) treated with BPC (odds ratio: 2.39, 95 % confidence interval: 1.05-5.48; P = 0.039). Aneurysm recurrence volumetry revealed an excellent correlation between observers (Cronbach's alpha = 0.93). In contrast, no significant difference in aneurysm recurrence was found for visual assessment (3.9 % in HSC cases and 4.7 % in BPC cases). Recurrences were observed in aneurysms smaller than the sample median in 10 of 33 (30.3 %) by aneurysm recurrence volumetry and in 1 of 13 (7.7 %) by visual assessment.CONCLUSIONS: Aneurysm recurrences were detected more frequently by aneurysm recurrence volumetry when compared with visual assessment. By using aneurysm recurrence volumetry, differences between treatment groups were detected with higher sensitivity and inter-observer validity probably because of the higher detection rate of recurrences in small aneurysms.

AB - PURPOSE: Considerable inter-observer variability in the visual assessment of aneurysm recurrences limits its use as an outcome parameter evaluating new coil generations. The purpose of this study was to compare visual assessment of aneurysm recurrences and aneurysm recurrence volumetry with an example dataset of HydroSoft coils (HSC) versus bare platinum coils (BPC).METHODS: For this retrospective study, 3-dimensional time-of-flight magnetic resonance angiography datasets acquired 6 and 12 months after endovascular therapy using BPC only or mainly HSC were analyzed. Aneurysm recurrence volumes were visually rated by two observersas well as quantified by subtraction of the datasets after intensity-based rigid registration.RESULTS: A total of 297 aneurysms were analyzed (BPC: 169, HSC: 128). Recurrences were detected by aneurysm recurrence volumetry in 9 of 128 (7.0 %) treated with HSC and in 24 of 169 (14.2 %) treated with BPC (odds ratio: 2.39, 95 % confidence interval: 1.05-5.48; P = 0.039). Aneurysm recurrence volumetry revealed an excellent correlation between observers (Cronbach's alpha = 0.93). In contrast, no significant difference in aneurysm recurrence was found for visual assessment (3.9 % in HSC cases and 4.7 % in BPC cases). Recurrences were observed in aneurysms smaller than the sample median in 10 of 33 (30.3 %) by aneurysm recurrence volumetry and in 1 of 13 (7.7 %) by visual assessment.CONCLUSIONS: Aneurysm recurrences were detected more frequently by aneurysm recurrence volumetry when compared with visual assessment. By using aneurysm recurrence volumetry, differences between treatment groups were detected with higher sensitivity and inter-observer validity probably because of the higher detection rate of recurrences in small aneurysms.

KW - Clinical Competence

KW - Female

KW - Humans

KW - Imaging, Three-Dimensional

KW - Intracranial Aneurysm

KW - Korea

KW - Magnetic Resonance Angiography

KW - Male

KW - Middle Aged

KW - Models, Statistical

KW - Observer Variation

KW - Pattern Recognition, Automated

KW - Prevalence

KW - Recurrence

KW - Retrospective Studies

KW - Risk Factors

KW - Sensitivity and Specificity

KW - Stents

KW - Treatment Outcome

KW - Comparative Study

KW - Journal Article

KW - Multicenter Study

KW - Randomized Controlled Trial

U2 - 10.1007/s00062-014-0330-6

DO - 10.1007/s00062-014-0330-6

M3 - SCORING: Journal article

C2 - 25159038

VL - 26

SP - 57

EP - 64

JO - CLIN NEURORADIOL

JF - CLIN NEURORADIOL

SN - 1869-1439

IS - 1

ER -