相关实验视频
Updated: Jan 21, 2026

09:11
Use of MRI-ultrasound Fusion to Achieve Targeted Prostate Biopsy
Published on: April 9, 2019
22.3K
磁力共振成像前列腺瘤体积预测在接受磁力共振成像向活检的患者中需要系统活检
Hanna Zurl1,2,3, Stefan Embacher4, Helmut Schöllnast5
1Department of Urology, Medical University of Graz, Graz, Austria.
Minerva urology and nephrology
|January 19, 2026
概括
在前列腺癌诊断中可能会省略系统活检. 多参数MRI瘤体积 (MTV) 预测了单独针对性活检是否足够,从而减少了不必要的程序.
科学领域:
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
- 在瘤学瘤学.
- 放射学 放射学是一门学科.
背景情况:
- 结合的跨直肠多参数MRI-TRUS向活检 (TB) 和系统活检 (SB) 是前列腺癌 (PCa) 诊断的标准.
- 系统活检 (SB) 可能会被省略在选择的患者,以尽量减少失踪的临床显著PCa (csPCa) 的风险单独与TB.
- 在接受结核病的男性中确定SB必要性的预测因素至关重要.
研究的目的:
- 确定预测有系统活检 (SB) 的必要性的临床特征,在接受跨直肠多参数MRI-TRUS向活检 (TB) 的男性中.
主要方法:
- 对879名接受结核病和SB结合治疗的患者进行了回顾性队列研究.
- 后勤回归分析确定了SB必要性的预测因素.
- 评估的关键预测因素包括PSA密度,PI-RADS得分和多参数MRI瘤体积 (MTV).
主要成果:
- 在9.1%的病例中,单单结核病就错过了临床显著的PCa (csPCa).
- 多参数MRI瘤体积 (MTV) 是单独结核病错过的csPCa的唯一显著预测因素 (OR=0.52,P<0.001).
- 较高的MTV (>1.36cm3) 与单独结核病缺失cspca的风险降低 (≤5%) 相相关.
结论:
- 多参数MRI瘤体积 (MTV) 在确定在向活检 (TB) 期间可能不需要同时进行系统活检 (SB) 的患者方面表现有希望.
- 在临床实施之前,需要在外部队列中进一步验证.
相关概念视频
Imaging Studies I: CT and MRI
819
Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
819
Radiological Investigation II: MRI and Ventilation Perfusion Scan
546
Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
546
Predicting Molecular Geometry
45.4K
VSEPR Theory for Determination of Electron Pair Geometries
45.4K
Random and Systematic Errors
14.4K
Scientists always try their best to record measurements with the utmost accuracy and precision. However, sometimes errors do occur. These errors can be random or systematic. Random errors are observed due to the inconsistency or fluctuation in the measurement process, or variations in the quantity itself that is being measured. Such errors fluctuate from being greater than or less than the true value in repeated measurements. Consider a scientist measuring the length of an earthworm using a...
14.4K
Systematic Sampling Method
12.6K
Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the population. Data are the result of sampling from a population. The sampling method ensures that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest.
Systematic sampling is one of the simplest methods...
Systematic sampling is one of the simplest methods...
12.6K
Propagation of Uncertainty from Systematic Error
1.4K
The atomic mass of an element varies due to the relative ratio of its isotopes. A sample's relative proportion of oxygen isotopes influences its average atomic mass. For instance, if we were to measure the atomic mass of oxygen from a sample, the mass would be a weighted average of the isotopic masses of oxygen in that sample. Since a single sample is not likely to perfectly reflect the true atomic mass of oxygen for all the molecules of oxygen on Earth, the mass we obtain from this...
1.4K

