Method and device for determining a damage characteristic value of a kidney

A eigenvalue, kidney technology, applied in the field of damage eigenvalue devices, can solve problems such as increased blood pressure

Inactive Publication Date: 2015-06-24
SIEMENS HEALTHCARE GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But under certain circumstances, or under certain preconditions, "false" signals are also sent from the kidneys, which lead to a pathological increase in blood pressure, which is unnecessary for the body

Method used

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  • Method and device for determining a damage characteristic value of a kidney
  • Method and device for determining a damage characteristic value of a kidney
  • Method and device for determining a damage characteristic value of a kidney

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Experimental program
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Embodiment Construction

[0056] figure 1 A kidney 2 is schematically shown, in which a nephronectomy is performed. In addition to the kidney 2 the aorta 5 and the renal artery 3 connecting the aorta 5 to the kidney 2 are shown. surrounding renal vessels The elongated nerve fibers 8 in particular transmit to the brain signals of pathological stimuli which, as a cause, lead to resistant hypertension. During a nephrectomy, the ablation catheter 6 is typically introduced into the renal artery 3 via an inlet in the patient's groin. By outputting a high-frequency current at the tip 7 of the ablation catheter 6 , which is represented by a semicircle, the nerve fibers 8 running locally around the renal vessels are ablated, so that the corresponding nerve conduction is electrically interrupted. Kidney 2 is thus decoupled from the sympathetic nervous system.

[0057] figure 2 The kidney 2 is schematically shown before digital subtraction angiography is performed. In this method, at least one image, refer...

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Abstract

The invention relates to elements of a method (1) for determining a damage characteristic value of a kidney (2). Images comprising the kidney (2) and the kidney artery (3) are entered into the method (1), from a three-dimensional digital subtraction angiography which is carried out by administering a contrast medium at the proximal end of the kidney artery (3) and comprises a fill run and a mask run, said method (1) comprising the following method steps: S1) determining a parenchymal blood volume into which the subtractions from images of the fill run and the mask run of the three-dimensional digital subtraction angiography are entered, additionally determining an arterial input function and normalising the parenchymal blood volume with said arterial input function; S2) segmenting the kidney (2), determining an average normalised parenchymal blood volume value, and determining a total value of the parenchymal blood volume into which the normalised parenchymal blood volume values of the segmentation of the kidney (2) are entered; S3) receiving an average normalised parenchymal blood volume normal value and a total normal value for a parenchymal blood volume, and determining at least one damage characteristic value of the kidney (2) into which the average normalised parenchymal blood volume value and the average normalised parenchymal blood volume normal value and / or the total value of the parenchymal blood volume and the total normal value of a parenchymal blood volume are entered; S4) issuing the at least one damage characteristic value of the kidney (2).

Description

technical field [0001] The invention relates to a method for determining characteristic values ​​of kidney damage. Furthermore, the invention relates to a corresponding device for determining characteristic values ​​of kidney damage. Background technique [0002] For resistant hypertension ( Hyperthonie), even when partially administered concurrently with at least three antihypertensive drugs, including diuretics, does not adequately lower systolic blood pressure below 160 mmHg. As explained in W.C. Cushman et al., Journal of Clinical Hypertension, Vol.IV, No.VI, 2002, pp.393 to 404, the disease is involved even with an increasing trend in 8% of optimally treated hypertensive patients, by This represents a very large patient population. The result of years of high blood pressure can be, inter alia: hardening of the arteries (atherosclerosis), coronary heart disease (narrowing of the coronary arteries of the heart), myocardial infarction, heart insufficiency (heart failur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T7/0016G06T2207/30084G06T2207/30104G06T2207/10072G06T7/11A61B5/201A61B6/461A61B6/481A61B6/504A61B6/5217
Inventor S.劳滕施拉格A-N.本吉
Owner SIEMENS HEALTHCARE GMBH
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