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Thin Slice Unenhanced Brain CT Can Detect Aneurysms Larger than 7 mm
PURPOSE: To evaluate the detection rate of intracranial aneurysms on reconstructed thin slice non enhanced CT (NECT) scans. METHODS: NECT scans from 34 patients with 35 aneurysms and 35 individuals without aneurysms were collected. Thin slice maximum intensity projections of the NECT scans were reco...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Ubiquity Press
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9053543/ https://www.ncbi.nlm.nih.gov/pubmed/35581972 http://dx.doi.org/10.5334/jbsr.2749 |
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author | Feyen, Ludger Haage, Patrick Freyhardt, Patrick Schott, Peter Katoh, Marcus Blockhaus, Christian Melber, Katharina |
author_facet | Feyen, Ludger Haage, Patrick Freyhardt, Patrick Schott, Peter Katoh, Marcus Blockhaus, Christian Melber, Katharina |
author_sort | Feyen, Ludger |
collection | PubMed |
description | PURPOSE: To evaluate the detection rate of intracranial aneurysms on reconstructed thin slice non enhanced CT (NECT) scans. METHODS: NECT scans from 34 patients with 35 aneurysms and 35 individuals without aneurysms were collected. Thin slice maximum intensity projections of the NECT scans were reconstructed. One observer evaluated the native images twice with a time interval of six month between both passes with respect to the prevalence and location of an aneurysm. The size and location of the aneurysms were evaluated in corresponding CT-Angiography and Time of flight datasets. A logit regression analysis was performed with size and location as dependent variables. 2 × 2 tables were constructed. The sensitivity and false negative rate were calculated for aneurysms with 0–6.9 mm, 7–9.9 mm and 10–20 mm and the under the curve (AUC) was calculated. RESULTS: The overall detection rate of the aneurysms was 63% for the first pass and 66% for the second pass in the reconstructed NECT scans. The detection rate of aneurysms is size dependent. The sensitivity to detect aneurysms with a size of 0–6.9 mm was 0.09 and 0.03, for aneurysms with a size of 7–9.9. mm was 0.8 and 0.7 and for aneurysms with a size of 10–20 mm was 0.92 for both passes. The AUC was 0.77 for the first pass and 0.78 for the second pass. CONCLUSIONS: NECT scans can be used to detect a significant proportion of intracranial aneurysms larger than 7 mm if properly displayed and reconstructed. These patients should receive further vascular imaging to prevent future aneurysm related subarachnoid hemorrhage. |
format | Online Article Text |
id | pubmed-9053543 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Ubiquity Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-90535432022-05-16 Thin Slice Unenhanced Brain CT Can Detect Aneurysms Larger than 7 mm Feyen, Ludger Haage, Patrick Freyhardt, Patrick Schott, Peter Katoh, Marcus Blockhaus, Christian Melber, Katharina J Belg Soc Radiol Original Article PURPOSE: To evaluate the detection rate of intracranial aneurysms on reconstructed thin slice non enhanced CT (NECT) scans. METHODS: NECT scans from 34 patients with 35 aneurysms and 35 individuals without aneurysms were collected. Thin slice maximum intensity projections of the NECT scans were reconstructed. One observer evaluated the native images twice with a time interval of six month between both passes with respect to the prevalence and location of an aneurysm. The size and location of the aneurysms were evaluated in corresponding CT-Angiography and Time of flight datasets. A logit regression analysis was performed with size and location as dependent variables. 2 × 2 tables were constructed. The sensitivity and false negative rate were calculated for aneurysms with 0–6.9 mm, 7–9.9 mm and 10–20 mm and the under the curve (AUC) was calculated. RESULTS: The overall detection rate of the aneurysms was 63% for the first pass and 66% for the second pass in the reconstructed NECT scans. The detection rate of aneurysms is size dependent. The sensitivity to detect aneurysms with a size of 0–6.9 mm was 0.09 and 0.03, for aneurysms with a size of 7–9.9. mm was 0.8 and 0.7 and for aneurysms with a size of 10–20 mm was 0.92 for both passes. The AUC was 0.77 for the first pass and 0.78 for the second pass. CONCLUSIONS: NECT scans can be used to detect a significant proportion of intracranial aneurysms larger than 7 mm if properly displayed and reconstructed. These patients should receive further vascular imaging to prevent future aneurysm related subarachnoid hemorrhage. Ubiquity Press 2022-04-26 /pmc/articles/PMC9053543/ /pubmed/35581972 http://dx.doi.org/10.5334/jbsr.2749 Text en Copyright: © 2022 The Author(s) https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Original Article Feyen, Ludger Haage, Patrick Freyhardt, Patrick Schott, Peter Katoh, Marcus Blockhaus, Christian Melber, Katharina Thin Slice Unenhanced Brain CT Can Detect Aneurysms Larger than 7 mm |
title | Thin Slice Unenhanced Brain CT Can Detect Aneurysms Larger than 7 mm |
title_full | Thin Slice Unenhanced Brain CT Can Detect Aneurysms Larger than 7 mm |
title_fullStr | Thin Slice Unenhanced Brain CT Can Detect Aneurysms Larger than 7 mm |
title_full_unstemmed | Thin Slice Unenhanced Brain CT Can Detect Aneurysms Larger than 7 mm |
title_short | Thin Slice Unenhanced Brain CT Can Detect Aneurysms Larger than 7 mm |
title_sort | thin slice unenhanced brain ct can detect aneurysms larger than 7 mm |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9053543/ https://www.ncbi.nlm.nih.gov/pubmed/35581972 http://dx.doi.org/10.5334/jbsr.2749 |
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