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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 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | 16x 16x 24x 24x 16x 8x 16x 16x 16x | import { metaData } from '@cornerstonejs/core';
type pixelUnitsOptions = {
isPreScaled: boolean;
isSuvScaled: boolean;
};
function getPixelValueUnitsImageId(
imageId: string,
options: pixelUnitsOptions
): string {
const generalSeriesModule = metaData.get('generalSeriesModule', imageId);
return getPixelValueUnits(generalSeriesModule.modality, imageId, options);
}
/**
* Determines the appropriate pixel value units based on the image modality and options.
* @param modality - The modality of the image (e.g., 'CT', 'PT').
* @param imageId - The unique identifier for the image.
* @param options - Additional options for determining pixel units.
* @returns The appropriate pixel value units as a string.
*/
function getPixelValueUnits(
modality: string,
imageId: string,
options: pixelUnitsOptions
): string {
Iif (modality === 'CT') {
return 'HU';
} else if (modality === 'PT') {
return _handlePTModality(imageId, options);
} else {
return '';
}
}
/**
* Handles the determination of pixel value units for PT (Positron Emission Tomography) modality.
* @param imageId - The unique identifier for the image.
* @param options - Additional options for determining pixel units.
* @returns The appropriate pixel value units for PT modality as a string.
*/
function _handlePTModality(
imageId: string,
options: pixelUnitsOptions
): string {
Iif (!options.isPreScaled) {
return 'raw';
}
Eif (options.isSuvScaled) {
return 'SUV';
}
const generalSeriesModule = metaData.get('generalSeriesModule', imageId);
// It might be possible that the reference ImageId is not the one
// that is being displayed. So we need to get the modality from imageId again
if (generalSeriesModule?.modality === 'PT') {
const petSeriesModule = metaData.get('petSeriesModule', imageId);
return petSeriesModule?.units || 'unitless';
}
return 'unknown';
}
export type { pixelUnitsOptions };
export { getPixelValueUnits, getPixelValueUnitsImageId };
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