A dataset of radiotherapy planning CT scans was generated after informed consent from patients undergoing radiotherapy treatment planning at Tata Medical Center. The planning CT scans include the structure sets drawn by Radiation Oncologists and used for radiotherapy treatment planning for the patients. Planning CT scans were acquired in a single CT scanner. In addition, for some patients, the radiation plan and dose data were also made available. The dataset also has clinical data on the patients which is linked to the images.