The ABCs of measuring intracerebral hemorrhage volumes

Rashmi U. Kothari; Thomas Brott; Joseph P. Broderick; William G. Barsan; Laura R. Sauerbeck; Mario Zuccarello; Jane Khoury

doi:10.1161/01.STR.27.8.1304

The ABCs of measuring intracerebral hemorrhage volumes

Rashmi U. Kothari, Thomas Brott, Joseph P. Broderick, William G. Barsan, Laura R. Sauerbeck, Mario Zuccarello, Jane Khoury

Neurology

Research output: Contribution to journal › Article › peer-review

1265 Scopus citations

Abstract

Background and Purpose: Hemorrhage volume is a powerful predictor of 30- day mortality after spontaneous intracerebral hemorrhage (ICH). We compared a bedside method of measuring CT ICH volume with measurements made by computer- assisted planimetric image analysis. Methods: The formula ABC/2 was used, where A is the greatest hemorrhage diameter by CT, B is the diameter 90° to A, and C is the approximate number of CT slices with hemorrhage multiplied by the slice thickness. Results: The ICH volumes for 118 patients were evaluated in a mean of 38 seconds and correlated with planimetric measurements (R²= .96). Interrater and intrarater reliability were excel lent, with an intraclass correlation of .99 for both. Conclusions: We conclude that ICH volume can be accurately estimated in less than 1 minute with the simple formula ABC/2.

Original language	English (US)
Pages (from-to)	1304-1305
Number of pages	2
Journal	Stroke
Volume	27
Issue number	8
DOIs	https://doi.org/10.1161/01.STR.27.8.1304
State	Published - Aug 1996

Keywords

blood volume
computed tomography
intracerebral hemorrhage

ASJC Scopus subject areas

Clinical Neurology
Cardiology and Cardiovascular Medicine
Advanced and Specialized Nursing

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title = "The ABCs of measuring intracerebral hemorrhage volumes",

abstract = "Background and Purpose: Hemorrhage volume is a powerful predictor of 30- day mortality after spontaneous intracerebral hemorrhage (ICH). We compared a bedside method of measuring CT ICH volume with measurements made by computer- assisted planimetric image analysis. Methods: The formula ABC/2 was used, where A is the greatest hemorrhage diameter by CT, B is the diameter 90° to A, and C is the approximate number of CT slices with hemorrhage multiplied by the slice thickness. Results: The ICH volumes for 118 patients were evaluated in a mean of 38 seconds and correlated with planimetric measurements (R2= .96). Interrater and intrarater reliability were excel lent, with an intraclass correlation of .99 for both. Conclusions: We conclude that ICH volume can be accurately estimated in less than 1 minute with the simple formula ABC/2.",

keywords = "blood volume, computed tomography, intracerebral hemorrhage",

author = "Kothari, {Rashmi U.} and Thomas Brott and Broderick, {Joseph P.} and Barsan, {William G.} and Sauerbeck, {Laura R.} and Mario Zuccarello and Jane Khoury",

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AU - Kothari, Rashmi U.

AU - Brott, Thomas

AU - Broderick, Joseph P.

AU - Barsan, William G.

AU - Sauerbeck, Laura R.

AU - Zuccarello, Mario

AU - Khoury, Jane

PY - 1996/8

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N2 - Background and Purpose: Hemorrhage volume is a powerful predictor of 30- day mortality after spontaneous intracerebral hemorrhage (ICH). We compared a bedside method of measuring CT ICH volume with measurements made by computer- assisted planimetric image analysis. Methods: The formula ABC/2 was used, where A is the greatest hemorrhage diameter by CT, B is the diameter 90° to A, and C is the approximate number of CT slices with hemorrhage multiplied by the slice thickness. Results: The ICH volumes for 118 patients were evaluated in a mean of 38 seconds and correlated with planimetric measurements (R2= .96). Interrater and intrarater reliability were excel lent, with an intraclass correlation of .99 for both. Conclusions: We conclude that ICH volume can be accurately estimated in less than 1 minute with the simple formula ABC/2.

AB - Background and Purpose: Hemorrhage volume is a powerful predictor of 30- day mortality after spontaneous intracerebral hemorrhage (ICH). We compared a bedside method of measuring CT ICH volume with measurements made by computer- assisted planimetric image analysis. Methods: The formula ABC/2 was used, where A is the greatest hemorrhage diameter by CT, B is the diameter 90° to A, and C is the approximate number of CT slices with hemorrhage multiplied by the slice thickness. Results: The ICH volumes for 118 patients were evaluated in a mean of 38 seconds and correlated with planimetric measurements (R2= .96). Interrater and intrarater reliability were excel lent, with an intraclass correlation of .99 for both. Conclusions: We conclude that ICH volume can be accurately estimated in less than 1 minute with the simple formula ABC/2.

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