import * as THREE from "three";
import { raw4DVolumeOptsType, Raw4DVolumeController } from "../types/types";
/**
 * Load a 4D volume sequence (one .mhd/.raw pair per cardiac phase) and add it to `scene`
 * as a raycast volume.
 *
 * The returned controller runs NO clock of its own — drive it with setFrame()/setPhase()
 * so it can share a cardiac-phase clock with other modalities.
 */
export declare function loadRaw4DVolume(mhdUrls: Array<string>, scene: THREE.Scene, opts?: raw4DVolumeOptsType, callback?: (ctrl: Raw4DVolumeController) => void): void;