Accessing DVH data from RTDose file

[T. G.]

Hello,

I'm just getting started with Dicompyler , and want to retrieve DVH data from my files.
I followed the getting-started tutorial and it looks like this:

#Modules
import os
import numpy as np
import matplotlib.pyplot as plt
import urllib.request
import os.path
import dicompylercore
from dicompylercore import dicomparser, dvh, dvhcalc
dp = dicomparser.DicomParser(r"C:\Users\...\rtss.dcm")
dp1 = dicomparser.DicomParser(r"C:\Users\...\rtdose.dcm")


#Get a dictionary of structure information
structures = dp.GetStructures()
print (structures)
#DVH = dp1.GetDVHs()
#print(DVH)


# Access DVH data
rtdose = dicomparser.DicomParser(r"C:\Users\....\rtdose.dcm")
test = dvh.DVH.from_dicom_dvh(r"C:\Users\...\rtdose.dcm", 2)
test.describe()

Unfortunately, I keep getting the error:

AttributeError: 'str' object has no attribute 'DVHSequence'

I'm not 100% this is a dicompyler related question, but I would still be grateful if somebody could help me with this issue.

Greetings and thank you

[Aditya Panchal]

Hi Tanja,

Are you sure that the DICOM RT Dose file has a DVH Sequence in it? You can check via:

print("DVHSequence" in self.ds)

If not, then you will have to use the dvhcalc module in dicompyler-core to calculate the DVH yourself.

Hope that helps,

Adit

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