相关实验视频
Updated: Jun 14, 2025
07:54
Use of a Hanging-weight System for Isolated Renal Artery Occlusion
Published on: July 19, 2011
15.9K
在接受脏的患者中,使用皮和脑髓之间的多相比值验证功能
Chao Wang1, Yancheng Song1, Zhibin Pan1
1Department of Magnetic Resonance Imaging, Cangzhou Central Hospital, No. 16 Xinhua West Road, Cangzhou City 061001, Hebei Province, China.
Current medical imaging
|August 29, 2024
概括
皮和脑髓之间的计算机断层图像值比率 (D(RatioC/M)) 的差异有效地评估了移植受体的功能. 这种多相比提供了一种可靠的方法来评估脏接受者的功能.
科学领域:
- 放射学和成像学 放射学和成像学
- 腎臟病學 (nephrology) 是一種醫學.
- 移植手术 移植手术
背景情况:
- 对于接受脏移植的人来说,精确评估功能至关重要.
- 评估功能的传统方法可能是侵入性的或耗时的.
- 新的成像技术为非侵入性功能评估提供了潜力.
研究的目的:
- 为了评估计算机断层扫描 (CT) 值在皮和脑髓之间的多相比.
- 要确定这个比率能否作为接受脏的功能的一个简洁的测量.
- 为了将CT衍生的比率与已建立的估计淋巴膜过率 (eGFR) 公式相关联.
主要方法:
- 根据eGFR (CKD-EPI和MDRD公式) 分类的58名接受者的回顾性分析.
- 多相比率的测量:动脉相 (A) 和静脉相 (V).
- 计算差异比率D ((RatioC/M) 和统计分析,包括相关性,回归,t测试和ROC曲线.
主要成果:
- D ((RatioC/M) 与eGFR ((CKD-EPI) (r=0.61) 和eGFR ((MDRD) (r=0.62)) 显示出强烈的正相关性.
- 在正常和异常功能组 (P<0.05) 之间观察到D (RatioC/M) 的显著差异.
- 在评估功能时,ROC曲线分析显示D ((RatioC/M) 的高精度 (AUC:0.863和0.822).
结论:
- D ((RatioC/M) 是评估移植患者功能的一个可靠指标.
- 这种基于CT的多相比为功能评估提供了一种简洁且潜在的非侵入性方法.
- 进一步的研究可以探索将其整合到常规移植后监测中.
相关概念视频
01:17Factors Affecting Renal Clearance: Renal Impairment
62
Renal dysfunction significantly impairs the renal clearance of drugs, leading to potential complications in drug therapy. Renal failure, which can be caused by various factors, poses a significant challenge in the elimination of drugs from the body.
One condition associated with renal failure is uremia. Uremia is characterized by impaired glomerular filtration and fluid accumulation in the body. This condition hinders the renal clearance of drugs, resulting in drug accumulation and potential...
One condition associated with renal failure is uremia. Uremia is characterized by impaired glomerular filtration and fluid accumulation in the body. This condition hinders the renal clearance of drugs, resulting in drug accumulation and potential...
62
01:11Renal Failure: Dose Adjustments
69
In patients with renal impairment, drugs undergo significant changes in their pharmacokinetics, which require dosage adjustments to ensure safe and effective therapy.
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
69
01:06Renal Drug Clearance: Overview
146
Renal clearance is a crucial parameter in pharmacokinetics that quantifies the rate at which the kidneys excrete a drug. It represents a constant fraction of the central volume of distribution containing the drug that the kidney eliminates per unit of time.
Renal clearance can be calculated using different methods. One approach is to divide the urinary drug excretion rate by the plasma drug concentration. This method directly measures renal clearance, indicating the kidneys' efficiency in...
Renal clearance can be calculated using different methods. One approach is to divide the urinary drug excretion rate by the plasma drug concentration. This method directly measures renal clearance, indicating the kidneys' efficiency in...
146
01:08Renal Drug Clearance: Comparison Between Renal Excretion Methods
85
Renal clearance is a critical parameter encompassing kidney filtration, secretion, and reabsorption processes. It is calculated using a specific equation to determine the rate at which the kidneys clear a drug.
Renal clearance is often associated with the renal glomerular filtration rate (GFR), which represents the rate at which plasma is filtered through the glomeruli in the kidney. When drug reabsorption is minimal and there is no active secretion, renal clearance is closely related to the...
Renal clearance is often associated with the renal glomerular filtration rate (GFR), which represents the rate at which plasma is filtered through the glomeruli in the kidney. When drug reabsorption is minimal and there is no active secretion, renal clearance is closely related to the...
85
01:07Determination of Renal Drug Clearance: Graphical and Midpoint Methods
90
Renal clearance, a crucial parameter in pharmacokinetics, can be determined using two different methods: the graphical method and the midpoint method. These methods provide insights into the rate of drug excretion by the kidneys and aid in assessing renal function.
The graphical method involves plotting the rate of drug excretion in urine against the plasma drug concentration. By analyzing the graph, the clearance can be calculated and obtained. Drugs rapidly excreted by the kidneys exhibit a...
The graphical method involves plotting the rate of drug excretion in urine against the plasma drug concentration. By analyzing the graph, the clearance can be calculated and obtained. Drugs rapidly excreted by the kidneys exhibit a...
90
01:23Renal Clearance
794
The glomerular filtration rate (GFR) is a critical marker of kidney function, reflecting the efficiency of filtration by the glomeruli. Renal clearance of specific substances, such as inulin or creatinine, is commonly used to measure GFR.
Renal clearance refers to the volume of plasma cleared of a specific substance, such as creatinine, per unit of time. To measure clearance, urine samples are collected over a 24-hour period during each bladder voiding, followed by a single blood sample at the...
Renal clearance refers to the volume of plasma cleared of a specific substance, such as creatinine, per unit of time. To measure clearance, urine samples are collected over a 24-hour period during each bladder voiding, followed by a single blood sample at the...
794