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Pyelogram (or pyelography or urography) is a form of imaging of the renal pelvis and ureter. Types include: * Intravenous pyelogram In which a contrast solution is introduced through a vein into the circulatory system. This is a form of anterograde pyelogram. * Retrograde pyelogram Any pyelogram 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 pyelogram (Also antegrade pyelogram) Any pyelogram where a contrast medium passes from the kidneys toward the bladder, mimicking the normal flow of urine. * Gas pyelogram A pyelogram that uses a gaseous rather than liquid contrast medium.〔Urology Secrets, 2nd Ed.,; Resnick, MD, Novick, MD; Hanley & Belfus, Inc., 1999, esp Chapt. 13, Evaluation of Hydronephrosis in Children by Kay, MD.〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「pyelogram」の詳細全文を読む スポンサード リンク
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