Vertical tomography with the application of a new principle.
D000388:Air; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008722:Methods; D011011:Pneumoencephalography; D011187:Posture; D011829:Radiation Dosage; D014056:Tomography, X-Ray / Q000295:instrumentation