在计算机断层扫描上对偶然的结石进行纵向跟踪
Pritam Mukherjee1, Sungwon Lee1, Daniel C Elton1
1Imaging Biomarkers and Computer-Aided Diagnosis Laboratory, Department of Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Building 10, Room 1C224D, 10 Center Drive, Bethesda, MD, 20892-1182, USA.
Abdominal radiology (New York)
|October 31, 2023
概括
偶发性结石在无症状成年人中很常见,大约有一半会随着时间的推移而生长. 这项研究使用CT扫描分析了它们的生长率和预后,发现它们的平均生长率为3.3mm3/年.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 放射学 放射学是一门学科.
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
背景情况:
- 在CT扫描中测量小结石是具有挑战性和耗时的.
- 体积测量评估可以比线性尺寸更准确地测量石头的大小.
- 无症状患者的偶发结石需要了解其生长和预后.
研究的目的:
- 用CT分析无症状患者中偶发结石的生长速度和预后.
- 评估体积测定对于测量结石的有用性.
主要方法:
- 追溯研究从2030年4266扫描无症状患者接受结肠直肠查CT.
- 深度学习 (DL) 软件识别并测量了883个结石 (体积,位置,衰减).
- 手动评估扫描,排除没有随访的患者,并在随访时对石头进行分类 (新,生长,持久,消失).
主要成果:
- 从189名患者中407次扫描的队列显示,偶然结石的患病率为12.7%.
- 在第一次随访时,48.8%的石头生长,31.3%的石头消失,19.9%的石头持续存在.
- 生长石的平均生长速度为3.3mm3/年;石块的大小和衰减与生长速度相关.
结论:
- 偶然的结石在无症状的成年人中很普遍.
- 大约一半的这些石头在随访期间表现出生长.
- 石头的大小和衰减是增长速度的适度预测因素.
相关概念视频
Imaging Studies III: Computed Tomography
12
DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
12
Urinary Tract Calculi III: Medical Management
9
The diagnosis of renal calculi involves several imaging techniques, including non-contrast CT scans and ultrasound. These methods help visualize kidney stones, assess their size and location, and detect possible obstructions. Additionally, Measuring urine pH is useful for diagnosing specific stone types, such as struvite (alkaline pH) and uric acid stones (acidic pH). Cystine stones are primarily linked to cystinuria, a genetic condition. A urinalysis helps detect blood in the urine (hematuria)...
9
Urinary Tract Calculi I: Introduction
16
Renal calculi, or kidney stones, are solid deposits of minerals and salts formed inside the kidneys. In medical terminology, "calculus" refers to the stone itself, while "lithiasis" describes the process of stone formation. Depending on their location within the urinary system, these stones may be classified as either urolithiasis, when situated within the urinary tract, or nephrolithiasis, when located within the kidneys. Each term signifies the specific impact of the stone.Predisposition...
16
Imaging Studies V: Intravenous Urography and Retrograde Pyelography
37
IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...
37
Urinary Tract Calculi VI: Surgical Management
8
Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...
8
Imaging Studies II: Ultrasonography
14
IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
14


