The anomalous left renal vein: CT appearance and clinical implications.

Persistence of portions or all of the fetal venous drainage of the left kidney may lead to a preaortic, circumaortic, or retroaortic type of left renal vein. The preaortic left renal vein, found in 85% of all cases, is almost always seen on abdominal CT scans. Its absence should alert the radiologist to look for a possible anomalous course.

Multiple window rectilinear scanner modification.

Although the gamma camera and multi-crystal scanner have largely replaced the old dual probe rectlinear scanners in the larger hospitals, a large number of such scanners are still in use today. Modifications to these units can greatly enhance their usefulness. This paper describes the addition of dual SCA windows to each probe of a rectlinear scanner to increase sensitivity to multiple gamma-ray isotopes such as 67Ga.