Diffusion-weighted imaging in ischemic stroke : effect of display method on observers' diagnostic performance
RATIONALE AND OBJECTIVES: When evaluating ischemic stroke on diffusion-weighted magnetic resonance imaging (DWI), the display method has not been investigated. The purpose of this study was to determine whether standardization of the display method for DWI affects observers' diagnostic performance in detecting ischemic stroke on DWI.
MATERIALS AND METHODS: Twenty-six observers evaluated 40 DWI studies in 20 patients with acute (< 6 hours) middle cerebral arterial strokes and 20 controls for the presence of hyperintense lesions in 10 areas using the Alberta Stroke Programme Early CT Score (ASPECTS) system and one area in the corona radiata using a modified version of the ASPECTS system (ASPECTS-DWI). The images were reviewed using a standardized display method (SDM) and a conventional display method (CDM). The reading time was recorded for each session. The observers' performance was evaluated with receiver-operating characteristic analysis.
RESULTS: In all observers with ASPECTS-DWI scores of < or = 8 points, the value of the mean average area under the receiver-operating characteristic curve was slightly higher for the SDM than the CDM, but the difference was not statistically significant. In the insular ribbon, diagnostic accuracy was significantly higher with the SDM than the CDM (P = .036). In the other locations, there were no significant differences. With the SDM, the mean reading time was reduced by 7.5 seconds (P = .024).
CONCLUSION: The SDM improved diagnostic accuracy for the insular ribbon and shortened the reading time, although it did not improve observers' performance with the ASPECTS-DWI system.
Medienart: |
E-Artikel |
---|
Erscheinungsjahr: |
2009 |
---|---|
Erschienen: |
2009 |
Enthalten in: |
Zur Gesamtaufnahme - volume:16 |
---|---|
Enthalten in: |
Academic radiology - 16(2009), 3 vom: 01. März, Seite 305-12 |
Sprache: |
Englisch |
---|
Beteiligte Personen: |
Hirai, Toshinori [VerfasserIn] |
---|
Links: |
---|
Themen: |
Comparative Study |
---|
Anmerkungen: |
Date Completed 15.04.2009 Date Revised 31.03.2022 published: Print Citation Status MEDLINE |
---|
doi: |
10.1016/j.acra.2008.09.012 |
---|
funding: |
|
---|---|
Förderinstitution / Projekttitel: |
|
PPN (Katalog-ID): |
NLM186284543 |
---|
LEADER | 01000naa a22002652 4500 | ||
---|---|---|---|
001 | NLM186284543 | ||
003 | DE-627 | ||
005 | 20231223173938.0 | ||
007 | cr uuu---uuuuu | ||
008 | 231223s2009 xx |||||o 00| ||eng c | ||
024 | 7 | |a 10.1016/j.acra.2008.09.012 |2 doi | |
028 | 5 | 2 | |a pubmed24n0621.xml |
035 | |a (DE-627)NLM186284543 | ||
035 | |a (NLM)19201359 | ||
040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
041 | |a eng | ||
100 | 1 | |a Hirai, Toshinori |e verfasserin |4 aut | |
245 | 1 | 0 | |a Diffusion-weighted imaging in ischemic stroke |b effect of display method on observers' diagnostic performance |
264 | 1 | |c 2009 | |
336 | |a Text |b txt |2 rdacontent | ||
337 | |a ƒaComputermedien |b c |2 rdamedia | ||
338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
500 | |a Date Completed 15.04.2009 | ||
500 | |a Date Revised 31.03.2022 | ||
500 | |a published: Print | ||
500 | |a Citation Status MEDLINE | ||
520 | |a RATIONALE AND OBJECTIVES: When evaluating ischemic stroke on diffusion-weighted magnetic resonance imaging (DWI), the display method has not been investigated. The purpose of this study was to determine whether standardization of the display method for DWI affects observers' diagnostic performance in detecting ischemic stroke on DWI | ||
520 | |a MATERIALS AND METHODS: Twenty-six observers evaluated 40 DWI studies in 20 patients with acute (< 6 hours) middle cerebral arterial strokes and 20 controls for the presence of hyperintense lesions in 10 areas using the Alberta Stroke Programme Early CT Score (ASPECTS) system and one area in the corona radiata using a modified version of the ASPECTS system (ASPECTS-DWI). The images were reviewed using a standardized display method (SDM) and a conventional display method (CDM). The reading time was recorded for each session. The observers' performance was evaluated with receiver-operating characteristic analysis | ||
520 | |a RESULTS: In all observers with ASPECTS-DWI scores of < or = 8 points, the value of the mean average area under the receiver-operating characteristic curve was slightly higher for the SDM than the CDM, but the difference was not statistically significant. In the insular ribbon, diagnostic accuracy was significantly higher with the SDM than the CDM (P = .036). In the other locations, there were no significant differences. With the SDM, the mean reading time was reduced by 7.5 seconds (P = .024) | ||
520 | |a CONCLUSION: The SDM improved diagnostic accuracy for the insular ribbon and shortened the reading time, although it did not improve observers' performance with the ASPECTS-DWI system | ||
650 | 4 | |a Comparative Study | |
650 | 4 | |a Evaluation Study | |
650 | 4 | |a Journal Article | |
650 | 4 | |a Research Support, Non-U.S. Gov't | |
700 | 1 | |a Sasaki, Makoto |e verfasserin |4 aut | |
700 | 1 | |a Maeda, Masayuki |e verfasserin |4 aut | |
700 | 1 | |a Ida, Masahiro |e verfasserin |4 aut | |
700 | 1 | |a Katsuragawa, Shigehiko |e verfasserin |4 aut | |
700 | 1 | |a Sakoh, Masaharu |e verfasserin |4 aut | |
700 | 1 | |a Takano, Koichi |e verfasserin |4 aut | |
700 | 1 | |a Arai, Shoichi |e verfasserin |4 aut | |
700 | 1 | |a Hirano, Teruyuki |e verfasserin |4 aut | |
700 | 1 | |a Kai, Yutaka |e verfasserin |4 aut | |
700 | 1 | |a Kakeda, Shingo |e verfasserin |4 aut | |
700 | 1 | |a Murakami, Ryuji |e verfasserin |4 aut | |
700 | 1 | |a Ikeda, Ryuji |e verfasserin |4 aut | |
700 | 1 | |a Fukuoka, Hirofumi |e verfasserin |4 aut | |
700 | 1 | |a Sasao, Akira |e verfasserin |4 aut | |
700 | 1 | |a Yamashita, Yasuyuki |e verfasserin |4 aut | |
700 | 0 | |a Acute Stroke Imaging Standardization Group-Japan (ASIST-Japan) Investigators |e verfasserin |4 aut | |
773 | 0 | 8 | |i Enthalten in |t Academic radiology |d 1995 |g 16(2009), 3 vom: 01. März, Seite 305-12 |w (DE-627)NLM087676818 |x 1878-4046 |7 nnns |
773 | 1 | 8 | |g volume:16 |g year:2009 |g number:3 |g day:01 |g month:03 |g pages:305-12 |
856 | 4 | 0 | |u http://dx.doi.org/10.1016/j.acra.2008.09.012 |3 Volltext |
912 | |a GBV_USEFLAG_A | ||
912 | |a GBV_NLM | ||
951 | |a AR | ||
952 | |d 16 |j 2009 |e 3 |b 01 |c 03 |h 305-12 |