IMAGE PROCESSING PROGRAM, IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD

• Main Authors: NISHIKAWA KAZUHIRO, HAMADA KAZUO
• Format: Patent
• Language: English; Japanese
• Published: 04.04.2019
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEASUREMENT OF NUCLEAR OR X-RADIATION; MEASURING; MEDICAL OR VETERINARY SCIENCE; PHYSICS; SURGERY; TESTING

To provide an index which accurately indicates a level of invasion of cancer into a bone region.SOLUTION: An image processing device executes a program to obtain an index with respect to a bony metastasis on the basis of a three-dimensional nuclear medicine image such as a SPECT image. The image processing device comprises: an image data acquisition section 10 where data on the SPECT image and a CT image of a subject is input; a bone region extraction section 20 which extracts a bone regions in the CT image; a bone region identification section 21 which identifies the bone region in the SPECT image corresponding to the bone region in the CT image; a normalizing section 22 which normalizes a pixel value of the bone region in the SPECT image; a bony metastasis region extraction section 23 which obtains a bony metastasis region having the pixel value equal to or larger than a predetermined threshold value in the bone region in the normalized SPECT image; and an index calculation section 24 which calculates the index with respect to a bony metastasis on the basis of volumes of the bone region and bone metastasis region.SELECTED DRAWING: Figure 1 【課題】癌の骨領域への浸潤の程度を表す精度の高い指標を提供する。【解決手段】ＳＰＥＣＴ画像等の三次元核医学画像に基づいて骨転移に関する指標を求めるためのプログラムである。プログラムを実行することにより実現される画像処理装置は、被験者のＳＰＥＣＴ画像とＣＴ画像のデータを入力する画像データ取得部１０と、ＣＴ画像における骨領域を抽出する骨領域抽出部２０と、ＣＴ画像における骨領域に対応するＳＰＥＣＴ画像の骨領域を特定する骨領域特定部２１と、ＳＰＥＣＴ画像における骨領域の画素値を正規化する正規化部２２と、正規化後のＳＰＥＣＴ画像における骨領域において所定の閾値以上の画素値を有する骨転移領域を求める骨転移領域抽出部２３と、骨領域の体積と骨転移領域の体積とに基づいて骨転移に関する指標を求める指標計算部２４とを備える。【選択図】図１