在代性CBCT和宫癌患者合成CT图像上的图书馆计划选择中观察者间的变异性
Yvonne J M de Hond1, Paul M A van Haaren1, An-Sofie E Verrijssen1
1Department of Radiation Oncology, Catharina Hospital Eindhoven, Eindhoven, The Netherlands.
Journal of applied clinical medical physics
|October 3, 2023
概括
用合成CTs (sCTs) 提高形束计算断层扫描 (CBCT) 图像质量,可显著提高宫癌患者的放射治疗计划选择准确性和一致性. 清晰的指导方针进一步减少了观察者之间的变化,从而导致更好的治疗结果.
科学领域:
- 辐射疗法 辐射疗法
- 医疗成像医学成像
- 在瘤学瘤学.
背景情况:
- 精确的放射治疗计划选择对于有效的癌症治疗至关重要.
- 图像质量不佳的圆束计算机断层扫描 (CBCT) 可以导致计划选择的变化.
- 这项研究探讨了宫癌放射治疗计划中的图像质量和观察者间的变异性.
研究的目的:
- 评估CBCT图像质量改善对放射治疗计划选择准确性的影响.
- 评估新技术对计划选择中观察者间变异性的影响.
- 在宫癌患者中使用不同的CBCT图像类型调查计划选择的准确性.
主要方法:
- 六名观察员评估了12名宫癌患者的CBCT图像.
- 在X射线体积成像CBCT,代重建CBCT (iCBCT) 和合成CT (sCT) 上进行了计划选择.
- 在制定指南的共识会议之前和之后,使用Fleiss' kappa评估了观察者间的变化.
主要成果:
- 与CBCT相比,sCT的观察者一致性明显高于CBCT.
- 一次共识会议和建立的指导方针改善了计划选择的持续时间,并减少了观察者之间的变化.
- 在达成共识后,黄金标准计划在90%的sCTs案例中被选中,相比之下是83% (XVI CBCT) 和81% (iCBCT).
结论:
- 合成CTs (sCTs) 在放射治疗计划选择中增强一致性.
- 实施明确的指导方针对于提高图像质量和减少变化至关重要.
- 这项研究表明,增强的成像和明确的协议可以提高放射治疗计划选择的准确性.
相关概念视频
Imaging Studies III: Computed Tomography
13
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...
13
Imaging Studies I: CT and MRI
267
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...
267
Computed Tomography
4.6K
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...
4.6K


