相关实验视频
Updated: Jan 16, 2026

A Novel Method: Super-selective Adrenal Venous Sampling
Published on: September 15, 2017
上腺成像特征和相关的病理诊断:当代的纵向分析
Kelly A Stahl1, Alaa Sada1, Yusuf Baytar2
1Division of Endocrine Surgery, Department of Surgery, University of Pittsburgh, Pittsburgh, PA.
在未经增强的计算机断层扫描上,≤20 Hounsfield 单位的密度值可靠地排除了恶性上腺病理. 这种成像功能可以帮助避免不必要的上腺切除术在近一半的上腺结节患者.
科学领域:
- 放射学 放射学是一门学科.
- 在瘤学瘤学.
- 内分泌学 在内分泌学.
背景情况:
- 上腺结节的术前风险评估依赖于成像特征,但证据质量往往很低.
- 目前关于上腺结节特征的建议需要评估.
研究的目的:
- 评估横截图成像特征在预测上腺病理方面的性能.
- 确定特定成像特征的准确性,以区分良性与恶性上腺病变.
主要方法:
- 对成年上腺切除病例 (2015-2023) 进行术前横截面成像的回顾性审查.
- 排除染细胞瘤和偶然的上腺切除术.
- 对成像特征的分析,包括大小,未增强CT上的Hounsfield单位,对比增强CT上的对比冲洗以及MRI信号特征.
主要成果:
- 恶性病变显著更大 (6.8厘米与4.4厘米相比),比良性病变更密集.
- 在没有增强的CT上,≤20Hounsfield单位的密度值可靠地排除了恶性瘤.
- 小恶性病变 (<4.0厘米) 在13.6%的上腺皮层癌和63.3%的其他恶性病变中被发现.
- 密度值 ≤20 霍恩斯菲尔德单位在识别上腺病理方面达到65%的准确性,正确分类48%的良性病变.
结论:
- 单独的上腺损伤大小>4.0厘米对恶性瘤的特异性较低.
- 在CT上绝对对比较的冲洗可能会错过转移性病变.
- 在没有增强的CT上,≤20Hounsfield单位的密度值是排除上腺恶性瘤的可靠方法,可能会防止不必要的手术.
更多相关视频
07:43Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
Published on: January 17, 2018
10:02Quantification of Atherosclerotic Plaque Activity and Vascular Inflammation using [18-F] Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography FDG-PET/CT
Published on: May 2, 2012
相关概念视频
Radiological Investigation III: Pulmonary Angiogram and PET Scan
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Anatomy of the Adrenal Glands
These glands possess a distinctive yellow tinge due to the stored cholesterol and fatty acids required for hormone synthesis. They are encased in a fibrous capsule and cushioned by fat.
The adrenal gland comprises two distinct...
Imaging Studies for Cardiovascular System III: X-Ray
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
Adrenal Gland Disorders
Adrenal insufficiency, characterized by insufficient cortisol and aldosterone production, leads to conditions like Addison's disease. This disorder, affecting the adrenal cortex, exhibits symptoms such as skin bronzing, dehydration, low blood pressure, fatigue, and weight loss. Congenital adrenal hyperplasia, a genetic ailment causing...
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
Imaging Studies for Cardiovascular System V: CT