how to select an image using free handtool and get the pixel counts

[lokesh andhavarapu]

very good morning to all the  members

i am doing a miniproject in medical image processing area where i need to read a dicom image  which is grayscale image and  select a  region in a image using free handtool . can anyone help me in doing that . I don,t know coding 

[lokesh andhavarapu]