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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | 57x 57x 57x 3x 3x 3x | /**
* Given a low and high window level, return the window width and window center
* @param low - The low window level.
* @param high - The high window level.
* @returns a JavaScript object with two properties: windowWidth and windowCenter.
*/
function toWindowLevel(
low: number,
high: number
): {
windowWidth: number;
windowCenter: number;
} {
const windowWidth = Math.abs(low - high);
const windowCenter = low + windowWidth / 2;
return { windowWidth, windowCenter };
}
/**
* Given a window width and center, return the lower and upper bounds of the window
* @param windowWidth - the width of the window in HU
* @param windowCenter - The center of the window.
* @returns a JavaScript object with two properties: lower and upper.
*/
function toLowHighRange(
windowWidth: number,
windowCenter: number
): {
lower: number;
upper: number;
} {
const lower = windowCenter - windowWidth / 2.0;
const upper = windowCenter + windowWidth / 2.0;
return { lower, upper };
}
export { toWindowLevel, toLowHighRange };
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