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Blod i urin - Läkartidningen

Kidney CT urography uses X-rays to generate multiple images of a slice of the area in your body that is being studied, including bones, soft tissues, and blood vessels. These images are then sent to a computer and quickly reconstructed into very detailed, 2-D images. supplanted by cross-sectional imaging techniques, particularly computed tomography CT urography in adults and MR urography in children. Occasionally, EU is still performed for imaging of the urinary tract. Typically, an EU includes one or more images of the abdomen before an IV contrast medium is administered (referred to as scout “ Intravenous urography (IVU), also referred to as intravenous pyelography (IVP) or excretory urography (EU), is a radiographic study of the renal parenchyma, pelvicalyceal system, ureters and the urinary bladder.

• Because of the multiphasic and functional nature of CTU, the radiation dose can reach high levels, so suggestions for optimized use of CTU with reduced dose have been published by scientific societies. 17. Se hela listan på mayoclinic.org To develop technical guidelines for computed tomography urography. The French Society of Genitourinary Imaging organised a Delphi consensus conference with a two-round Delphi survey followed by a face-to-face meeting. Consensus was strictly defined using a priori criteria. Forty-two expert uro-radiologists completed both survey rounds with no attrition between the rounds. Ninety-six (70%) of Any deviation from protocol MUST be radiologist approved.

Spatial resolution and radiation dose of a 64-MDCT scanner compared with published CT urography protocols.

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1A, 1B ). The optimal combination of unenhanced, corticomedullary phase and nephrographic phase imaging depends on the context; suggestions of protocols are provided for eight different clinical situations.

Uti Research Paper

2016-06-20 · CT Urogram - Thin sagittal and coronal (3mm x 3mm) of the entire data set, and thick slab (3cm x 3mm) coronal MPR reconstruction should be performed of the opacified renal pelvis, ureters, and bladder. 3D of the collecting system can be performed, as needed or requested. However, in the common sense, to exploit all the potential of this technique, CT urography is understood as a combination of renal CT plus CT of the contrast-enhanced upper urinary tract. Therefore, in most centers, a three-phase CT urographic protocol, consisting of unenhanced, nephrographic, and excretory phases, is performed [ 1 , 3 , 7 ]. Radiologists have used the imaging techniques of excretory urography to develop CT urographic protocols. A typical CT urographic protocol has three phases that allow complete evaluation for the most common urologic causes of hematuria, that is, calculi, renal masses, and urothelial tumors (Fig.

Various scanning techniques for CT urography have been described, but there is no universally accepted imaging protocol (3,4). In the most general sense, complete CT urography includes a nonenhanced phase, a contrast-enhanced phase, and an excretory phase .
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Precontrast images consist of plain abdominal radiographs and unenhanced CT scans (LightSpeed QX/i; GE Healthcare). CT UROGRAM / HEMATURIA PROTOCOL: NOTES: • Use at least 22g needle • Follow GFR and Metformin protocols for contrast studies • LMP on pts of child-bearing age Radiologists have used the imaging techniques of excretory urography to develop CT urographic protocols. A typical CT urographic protocol has three phases that allow complete evaluation for the most common urologic causes of hematuria, that is, calculi, renal masses, and urothelial tumors (Fig. 1A, 1B ). The optimal combination of unenhanced, corticomedullary phase and nephrographic phase imaging depends on the context; suggestions of protocols are provided for eight different clinical situations.

The three phases most commonly include a non-contrast phase, a nephrographic phase scanned at 80 to 120 s delay, and an excretory phase scanned at 10–15 min delay.” studies that CT Urography (CT abdomen and pelvis without and with intravenous contrast) may not be warranted in specific patient cohorts, particularly young individuals without risk factors for urinary tract malignancy, who may be evaluated with a CT exam without contrast only (CT renal stone protocol). CT urography is defined as CT examination of the kidneys, ureters and bladder with at least one series of images acquired during the excretory phase after intravenous contrast administration. The reasoning for using CT urography to investigate hematuria is based on its high diagnostic accuracy for urothelial cell carcinoma (UCC) and favorable comparison with other imaging techniques. CT urography (CT-U) is an established method, which allows assessment of urological malignancies.
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It gives both anatomical and functional information, albeit with a relatively higher dose of radiation. A Computed tomography urography (CT urography or CT urogram) is a computed tomography scan that examines the urinary tract after contrast dye is injected into a vein. [1] In a CT urogram, the contrast agent is through a cannula into a vein , allowed to be cleared by the kidneys and excreted through the urinary tract as part of the urine . CT examination of the pancreas should always be done with maximum amount of contrast at a maximum flow rate, because both small pancreatic carcinomas aswell as pancreatic necrosis in pancreatitis are difficult to detect. It is a matter of personal flavor to do the whole abdomen at 35 sec p.i.