X-ray : basic interpretation X rays are one of the most frequently requested investigations and their interpretation is one of the fundamental skills of every doctor. In this blog series, we look into the basic interpretation of chest x-ray. If you have no or little knowledge regarding the interpretation of x rays   then it will give you a solid foundation upon which you can build your further knowledge. figure. x-ray source, detector, patient in between less dense like air=black,  more dense like bones=white,  moderate dense like water=grey   parts of the film -                 where x ray struck: black     where x rays are blocked/ no x ray struck: white     where some amount of x ray struck: shade of grey spectrum: radiolucent to radiopaque ( air, fluid, and soft tissue, bone, metal) there are 3 types of views for x ray:  ·         anteroposterior or AP view is used in bed-ridden patients who are unable to stand. AP view magnifies the size of the heart and medias