Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 | 34x 34x 77x 5x 72x 72x 72x 72x 38x 34x 1x 33x 28x 5x | import { CONSTANTS, utilities } from '@cornerstonejs/core';
const { MPR_CAMERA_VALUES } = CONSTANTS;
/**
* Determines the viewport orientation (axial, sagittal, or coronal) based on the image orientation patient values.
* This is done by comparing the view vectors with predefined MPR camera values.
*
* @param imageOrientationPatient - Array of 6 numbers representing the image orientation patient values.
* The first 3 numbers represent the direction cosines of the first row and the second 3 numbers
* represent the direction cosines of the first column.
*
* @returns The viewport orientation as a string ('axial', 'sagittal', 'coronal') or undefined if
* the orientation cannot be determined or if the input is invalid.
*
* @example
* ```typescript
* const orientation = getViewportOrientationFromImageOrientationPatient([1,0,0,0,1,0]);
* console.debug(orientation); // 'axial'
* ```
*/
export const getViewportOrientationFromImageOrientationPatient = (
imageOrientationPatient: number[]
): string | undefined => {
if (!imageOrientationPatient || imageOrientationPatient.length !== 6) {
return undefined;
}
const viewRight = imageOrientationPatient.slice(0, 3);
const viewDown = imageOrientationPatient.slice(3, 6);
const viewUp = [-viewDown[0], -viewDown[1], -viewDown[2]];
// Compare vectors with MPR camera values using utilities.isEqual
if (
utilities.isEqual(viewRight, MPR_CAMERA_VALUES.axial.viewRight) &&
utilities.isEqual(viewUp, MPR_CAMERA_VALUES.axial.viewUp)
) {
return 'axial';
}
if (
utilities.isEqual(viewRight, MPR_CAMERA_VALUES.sagittal.viewRight) &&
utilities.isEqual(viewUp, MPR_CAMERA_VALUES.sagittal.viewUp)
) {
return 'sagittal';
}
if (
utilities.isEqual(viewRight, MPR_CAMERA_VALUES.coronal.viewRight) &&
utilities.isEqual(viewUp, MPR_CAMERA_VALUES.coronal.viewUp)
) {
return 'coronal';
}
return undefined;
};
|