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pydicom-tools's Introduction

pydicom tools

pydicomを用いてDICOM RTを解析するときのツール群です。

3次元CTデータの構築

以下の方法で変数ctに3次元Volumeを読み込みます。

from pydicom_tools import CTImage
ct = CTImage()
ct.load(path_to_ct)

DRRの生成

以下の方法でDRRを生成します。 DRRの作成にはITKが必要です。事前にpipなどでインストールしてください。

pip install itk
from pydicom_tools import DRR
drr = DRR(ct, beam, size)

ctCTImageクラスのインスタンス、beamはBeamSequenceのオブジェクト、 sizeはDRRのmm単位のサイズです。

RT Structure Setの読み込み

以下の方法でRT Structure Setを読み込みます。

from pydicom_toos import RTSS
ss = RTSS('path/to/rtss')

# 輪郭名一覧を表示
print(ss.structures)

# z座標をkeyとする輪郭点座標の辞書へアクセス
points = ss.points['Structure Name']

# z座標をkeyとするmatplotlib.path.Pathクラスのオブジェクトへアクセス
paths = ss.paths['Structure Name']

# 輪郭の体積を計算
volume = ss.calc_volume('Structure Name')

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