What is striated Nephrogram?
Striated nephrogram is a descriptive term indicating an appearance of alternating linear bands of high and low attenuation in a radial pattern extending through the corticomedullary layers of the kidney on iodine-based intravenous contrast enhanced imaging.
What is the Nephrogram phase?
The nephrographic phase begins at 80–120 seconds after the start of contrast medium injection. Tubular filtration of contrast material produces homogeneous enhancement of the renal parenchyma. This is the best phase for detection of subtle parenchymal lesions.
What is a CT Nephrogram?
With expansions in use of cross-sectional imaging, the computed tomographic (CT) nephrogram (ie, contrast material enhancement within the renal parenchyma) has assumed a greater role in the evaluation of urinary tract disorders.
What is renal parenchyma?
The renal parenchyma is the functional part of the kidney that includes the renal cortex (the outermost part of the kidney) and the renal medulla.
What is the meaning of Pyelogram?
noun. the science or technique of making photographs of the kidneys, renal pelves, and ureters by means of x-rays, after the injection of an opaque solution or of a radiopaque dye.
What is Pyelographic phase?
The pyelographic or excretory phase is present 3 minutes after in- jection of IV contrast material (Fig. 1). In normal kidneys, the three phases of contrast media excretion are always symmet- ric in time of appearance, time of disappear- ance, and density [2].
What is CT urogram used for?
A computerized tomography (CT) urogram is an imaging exam used to evaluate the urinary tract. The urinary tract includes the kidneys, bladder and the tubes (ureters) that carry urine from the kidneys to the bladder.
How is renal parenchymal disease diagnosed?
Renal parenchymal diseases can be asymptomatic early on and hence, diagnosis is the only way to detect these diseases in cases where symptoms are now shown. Diagnosis can be made through: Clinical exams: Renal parenchymal diseases are typically identified through lab and urine tests.
What is the function of renal parenchyma?
The solid part of the kidney, where the process of waste excretion takes place. The outer layer of the parenchyma consisting of connective tissue.
How is a renogram done?
A radioactive substance (or tracer) is injected into a vein in your arm. You will not feel any effects from the injection. The radioactive substance travels through the blood to your kidneys. The radiation you are exposed to with the injected radioactive substance is about the same as a regular X-ray.
How is a pyelogram performed?
X-rays are taken of your urinary tract before any dye is injected. X-ray dye is injected through your IV line. X-ray images are taken at timed intervals as the dye flows through your kidneys to the ureters and into your bladder. Toward the end of the exam, you may be asked to urinate again.
How is CT urogram performed?
A CT urogram is performed by injecting a contrast dye (iodine contrast solution) into the vein in the hand or arm. The dye flows into the kidneys, ureters, and bladder outlining each of these structures.