# Load one patient onto screen
**URL:** https://discourse.slicer.org/t/load-one-patient-onto-screen/19319
**Category:** Support
**Created:** [August 23, 2021, 2:58pm UTC](https://discourse.slicer.org/t/load-one-patient-onto-screen/19319 "2021-08-23T14:58:51Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@alyssan](https://discourse.slicer.org/u/alyssan)
#### Post date: [August 23, 2021, 2:58pm UTC](https://discourse.slicer.org/t/load-one-patient-onto-screen/19319/1 "2021-08-23T14:58:51Z")
Hello, I have a folder of dicom files but would like to automatically load on patient onto the screen every time.
I have loaded my dicom files into the DICOM database using this code:
```python
dicomDataDir = "c:/my/folder/with/dicom-files" # input folder with DICOM files
loadedNodeIDs = [] # this list will contain the list of all loaded node IDs
from DICOMLib import DICOMUtils
with DICOMUtils.TemporaryDICOMDatabase() as db:
DICOMUtils.importDicom(dicomDataDir, db)
patientUIDs = db.patients()
for patientUID in patientUIDs:
loadedNodeIDs.extend(DICOMUtils.loadPatientByUID(patientUID))
```
How do I automatically access one patient and load it, do I have to use the patient uid and how do i find this?
---
### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [August 23, 2021, 4:09pm UTC](https://discourse.slicer.org/t/load-one-patient-onto-screen/19319/2 "2021-08-23T16:09:24Z")
If you just want to load the first patient then replace the last two lines by
```python
loadedNodeIDs.extend(DICOMUtils.loadPatientByUID(patientUIDs[0]))
```
---
### Author:  [@alyssan](https://discourse.slicer.org/u/alyssan)
#### Post date: [August 24, 2021, 1:36pm UTC](https://discourse.slicer.org/t/load-one-patient-onto-screen/19319/3 "2021-08-24T13:36:56Z")
Thank you this seems to be working I appreciate your help.
I have a script set up but it was using sample data.
#Load Data
import SampleData
sampleDataLogic = SampleData.SampleDataLogic()
masterVolumeNode = sampleDataLogic.downloadMRBrainTumor1()
n = getNode(‘MRBrainTumor1’)
The masterVolumeNode variable is important and called in future code, how would I set this using my new data from dicom folder?
Thank you
---
### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [August 24, 2021, 1:59pm UTC](https://discourse.slicer.org/t/load-one-patient-onto-screen/19319/4 "2021-08-24T13:59:41Z")
In the example above, `loadedNodeIDs` contain the IDs of the loaded nodes. For example, you can get the first node object (for example, it can be a volume node) by calling:
```python
n = slicer.mrmlScene.GetNodeByID(loadedNodeIDs[0])
```
---
### Author:  [@alyssan](https://discourse.slicer.org/u/alyssan)
#### Post date: [August 24, 2021, 3:44pm UTC](https://discourse.slicer.org/t/load-one-patient-onto-screen/19319/5 "2021-08-24T15:44:56Z")
Okay, I have tried it out.
masterVolumeNode = slicer.mrmlScene.GetNodeByID(loadedNodeIDs[0])
I am using this for segmentation and get the error “Master Volume Node is not set as either background or foreground”
Any ideas on how to fix this?
---
### Author:  [@rbumm](https://discourse.slicer.org/u/rbumm)
#### Post date: [August 24, 2021, 4:27pm UTC](https://discourse.slicer.org/t/load-one-patient-onto-screen/19319/6 "2021-08-24T16:27:35Z")
> [@alyssan](#):
>
> I am using this for segmentation
What exactly is it you want to do? Please give more details …
---
### Author:  [@alyssan](https://discourse.slicer.org/u/alyssan)
#### Post date: [August 25, 2021, 4:41pm UTC](https://discourse.slicer.org/t/load-one-patient-onto-screen/19319/7 "2021-08-25T16:41:32Z")
I am following an example like this one:
>
I was asking how to define masterVolumeNode from loaded data from folder on my computer.
When I implemented:
masterVolumeNode = slicer.mrmlScene.GetNodeByID(loadedNodeIDs[0])
It said that masterVolume Node is not set as either the background or foreground