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CT measurement method for detecting renal filtration function

A measurement method and kidney technology, applied in the fields of radiological diagnosis instruments, medical science, diagnosis, etc., can solve problems such as inability to apply clinically, and achieve the effect of high clinical application value

Pending Publication Date: 2017-05-17
袁小东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the Patlak mode CT measurement of glomerular filtration rate (kidney function) reported in the literature cannot be applied clinically due to various limitations.

Method used

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  • CT measurement method for detecting renal filtration function
  • CT measurement method for detecting renal filtration function
  • CT measurement method for detecting renal filtration function

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Embodiment approach

[0050] In the embodiment of the CT measurement method for detecting renal filtration function of the present invention, before the injection of the contrast agent, a CT plain scan is performed on the kidney of the subject, and then during the excretion period (2.5 minutes) after the injection of the contrast agent, the scan is performed again. CT scan, referred to in this application as t 1 Enhanced CT scan of the kidneys at all times. By comparing t 1 The glomerular filtration rate (GFR) was calculated by the increase of kidney CT value and the total injection volume of iodine contrast medium at each time.

[0051] The CT scan in this embodiment is a conventional CT scan, including plain scan and enhanced scan.

[0052] Refer below figure 1 , 2 , 3. The first embodiment of the present invention will be described in detail.

[0053] The specific implementation steps implemented on the subjects are carried out in the following order.

[0054] (flat scan)

[0055] Before ...

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Abstract

The invention provides a CT measurement method for detecting a unilateral renal filtration function. The measurement method comprises the steps that CT scanning is performed at a certain moment after injection of a contrast agent, the accumulation amount of the contrast agent in the kidney is measured, the total contrast agent injection amount is divided by the accumulation amount to obtain an accumulation fraction FRA of the kidney, the FRA can directly serve as a pointer for assessing the GFR of the renal filtration function, or the mathematic relation of the FRA and the GFR is determined through linear-regression analysis, and a formula is established to calculate glomerular filtration rate (GFR) based on the FRA.

Description

technical field [0001] The invention relates to a CT measurement method for detecting kidney filtering function. Background technique [0002] The blood is filtered by the glomerulus to generate primary urine, and then part of the water and electrolytes are absorbed through the renal tubules and collecting ducts and concentrated into urine for discharge. important. [0003] The so-called renal filtration function is the ability of the kidney to filter plasma per unit time. Because the filtration process occurs in the glomeruli, it is called the glomerular filtration rate (GFR). The GFR of a normal adult is 120ml / min That is to say, 120ml of plasma per minute will be filtered by the glomeruli to form primary urine (about 60ml per kidney), and most of the water in the primary urine will be reabsorbed through the renal tubules and collecting duct system (about 98 %, that is, concentration) finally forms urine, and the metabolic waste in the plasma is excreted with the urine. ...

Claims

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Application Information

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IPC IPC(8): A61B6/03
CPCA61B6/032A61B6/481
Inventor 袁小东张静时文伟
Owner 袁小东