与Otsu和适应的Chan-Vese方法进行比较,以使用蒙特卡洛生成的SPECT图像来确定甲状腺活体体积
Jonas Högberg1, Christoffer Andersén2, Tobias Rydén3
1Department of Medical Radiation Physics, and Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden.
EJNMMI physics
|January 8, 2024
概括
陈维斯模型和奥图方法都有效地细分甲状腺体量. 尽管面临实施挑战,但Chan-Vese在细分精度方面表现出卓越的性能和稳定性.
科学领域:
- 医疗成像医学成像
- 图像细分 图像细分
- 核医学就是核医学.
背景情况:
- 奥苏方法和Chan-Vese模型是已知的图像细分技术.
- 准确细分活跃的甲状腺体体积对于临床评估至关重要.
- 本研究将这些方法在不同的模拟临床条件下进行比较.
研究的目的:
- 为了比较Otsu的方法和Chan-Vese模型对细分活跃甲状腺体体积的性能.
- 在各种条件下评估细分精度,包括腺体大小,活动度和异质性.
- 评估每个细分方法的稳定性和临床适用性.
主要方法:
- 模拟单光子发射计算断层扫描 (SPECT) 数据来自不同体积 (20-50毫升) 的甲状腺幻体.
- 纳入了各种腺活动度,背景水平 (5-20%),异质性 (热点).
- 应用了Otsu的值和Chan-Vese活跃轮细分,使用体积差异和Dice相似系数进行评估.
主要成果:
- 这两种方法都显示出良好的细分性能,与真实体积有相似的偏差.
- 这两种方法都倾向于高估小体积,低估大体积.
- -维斯模型表现出明显更好的子相似系数 (p < 0.05),表明更高的准确性.
结论:
- 与Otsu方法相比,Chan-Vese模型在甲状腺体量细分方面提供了更好的准确性和稳定性.
- 陈维斯模型的临床实施更加复杂,在性能和可用性之间进行了权衡.
- 进一步的开发可能会提高Chan-Vese模型对甲状腺成像的临床实用性.
相关概念视频
Computed Tomography
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
Imaging Studies II: Positron Emission Tomography and Scintigraphy
Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
Fundamental Principles of PET
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
Imaging Studies II: Ultrasonography
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...
Imaging Studies III: Computed Tomography
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...


