Talk about candid cameras.At Wake Forest University Baptist Medical Center, physicians carefully insert a flexible camera into a patient’s urethra, hunting for obstructions.The digital camera lets doctors identify such obstructions as blockages in the bladder, but it also allows patients to see crystal-clear images of their own bodies. The technology can help patients understand their own medical condition, said Dr. Gopal Badlani, the medical center’s vice chairman of clinical affairs.