PROBLEM TO BE SOLVED: To provide a handheld device and a corresponding method that ensure acquisition of high-quality optoacoustic images in a simplified manner.SOLUTION: A handheld device (10) according to the present invention comprises: an irradiation unit (2b) for irradiating an object with electromagnetic radiation (5), particularly light and a detection unit (1a, 1b) for detecting ultrasonic waves which are generated in the object upon irradiation with light, wherein the detection unit includes an array of detection elements. In order to acquire high-quality tomographic optoacoustic images from different depths within the object, the handheld device is provided with a recess (6), in which the irradiation unit and the array of detection elements are provided. The detection elements are arranged in the recess such that the surface normals of at least a part of the detection elements are directed to a region of interest on or within the object.COPYRIGHT: (C)2014,JPO&INPIT【課題】高品質光音響画像を簡単かつ確実に取得できる手持ち式装置及び対応する方法を提供すること。【解決手段】本発明による手持ち式装置(10)は,電磁放射(5),特に光で対象体を照射する照射ユニット(2b)と,光照射によって対象体から発せられる超音波を検出する検出ユニット(1a,1b)とを備え,検出器ユニットは検出器素子の配列を有する。対象体内の種々の深度から高品質断層光音響画像を得るために,手持ち式装置は陥凹部(6)を備え,陥凹部には照射ユニット及び検出器素子の配列が設けられる。検出器素子は,検出器素子の少なくとも一部の面法線が対象体の上又は内部の関心領域に向けられるように陥凹部に配置される。【選択図】図14
