<unk>  (or<unk> hy or urography) is a form of imaging of the renal pelvis and ureter. Types include: * Intravenous<unk>  – In which a contrast solution is introduced through a vein into the circulatory system. * Retrograde<unk>  – Any<unk>  in which contrast medium is introduced from the lower urinary tract and flows toward the kidney (i.e. in a "retrograde" direction, against the normal flow of urine). * Anterograde<unk>  (also antegrade<unk>  – A<unk>  where a contrast medium passes from the kidneys toward the bladder, mimicking the normal flow of urine. * Gas<unk>  – A<unk>  that uses a gaseous rather than liquid contrast medium. It may also form without the injection of a gas, when gas producing micro-organisms infect the most upper parts of urinary system.
Pyelogram
Microperimetry
Pelvimetry
Electroretinography
Photoacoustic imaging
Optomyography
Ocular tonometry
Electrooculography