2024年8月4日 · The ureter is a paired fibromuscular tube that conveys urine from the kidneys in the abdomen to the bladder in the pelvis. The ureter is 25-30 cm long and has three parts: The ureter begins its descent to the bladder by running along the medial aspect of the psoas muscle.

2015年3月27日 · This review provides an overview of pathologic ureteral conditions and a systematic approach to interpreting ureteral abnormalities seen at CT urography. Over the past decade, computed tomographic (CT) urography has emerged as the primary imaging modality for evaluating the urinary tract in various clinical settings, including the initial ...

2016年3月6日 · Today, blind-ending ureters are more likely to be discovered with CT, although detection requires a methodical approach. Similar to identification of the ureter and gonadal vein on every examination, it is important to follow any dilated tubular structure in the retroperitoneum to confirm its beginning and end to avoid confusing a diverticulum ...

Ureter segmentation is a critical component for computer-aided diagnosis of ureter cancer. COMPASS consists of three stages: (1) rule-based adaptive thresholding and region growing, (2) path-finding and propagation, and (3) edge profile extraction and feature analysis.

2023年3月23日 · Computed tomography of kidneys, ureters and bladder (CT KUB) is a quick non-invasive technique for diagnosis of urolithiasis. It is usually considered the initial imaging modality for suspected urolithiasis in an emergency setting 1 .

2016年8月7日 · Some authors suggest that a significant improvement in the opacification of the middle and distal ureters on the post-release excretory phase scan is achieved, whereas other authors report that no significant difference in ureteral distension exists …

2024年11月26日 · This study suggests using T10 and the pubic symphysis as reliable landmarks to accurately determine the scan length. Starting CT KUB scans from the T10 vertebral body to the pubic symphysis allows for imaging of the entire urinary tract, minimizing unnecessary overscanning and reducing patient irradiation.

A ureteral injury may be first diagnosed on CT in a patient evaluated after surgery. A high index of suspicion is essential and a CT study should then include a delayed scan in order to establish the diagnosis of ureteral injury resulting in a urinoma.

A contrast-enhanced CT scan is indicated for the diagnosis of hydronephrosis, hematuria, diagnosis and staging of urogenital tumors, abdominal trauma with suspected renal injury, adrenal tumors, and diseases of the renal vessels.

2021年1月15日 · Stones that are passing in the ureter will almost always be visible on CT scan. CT done without contrast placed into your vein are more commonly done when stones are suspected. Stones are white against a black and gray background of …