Hi Gunter,
I tried both dcm4chee-arc-light versions 5.18.0 and 5.21.0. In 5.18.0, I was able to send images without making any configuration changes. But in 5.21.0, I was getting error when trying to send an MR image. ERROR - No Presentation Context negotiated to store 1.2.840.10008.5.1.4.1.1.4/MR Image Storage - ./Images/1_1_1_1_1.dcm
So added MR Image Storage SCP details in 5.21.0 under the Transfer Capabilities by comparing with the details in the version 5.18.0. Then I could send MR images to 5.21.0. Now tried sending a CT image to 5.21.0 and I am getting error, No Presentation Context negotiated to store 1.2.840.10008.5.1.4.1.1.2/CT Image Storage.
Attaching the screenshot where I added MR Image Storage SCP details.