Clinical image quality perception and its relation to NECR measurements in PET [0.03%]
临床图像质量感知及其与PET中NECR测量的关系
Marcelo A Queiroz,Scott D Wollenweber,Gustav von Schulthess et al.
Marcelo A Queiroz et al.
Background: The purpose of this study is to describe a clinical relation of noise equivalent count rate (NECR) - an objective measurement of positron emission tomography (PET) systems - measured in a large number of patie...
Metal artifact reduction in patients with dental implants using multispectral three-dimensional data acquisition for hybrid PET/MRI [0.03%]
基于多光谱三维数据获取的种植牙患者正电子发射断层和磁共振成像的金属伪影减少方法研究
Jeanne M Gunzinger,Gaspar Delso,Andreas Boss et al.
Jeanne M Gunzinger et al.
Background: Hybrid positron emission tomography/magnetic resonance imaging (PET/MRI) shows high potential for patients with oropharyngeal cancer. Dental implants can cause substantial artifacts in the oral cavity impairin...
Impact of incorrect tissue classification in Dixon-based MR-AC: fat-water tissue inversion [0.03%]
基于Dixon的MR-AC中错误组织分类的影响：脂肪水组织反转
Claes Nøhr Ladefoged,Adam Espe Hansen,Sune Høgild Keller et al.
Claes Nøhr Ladefoged et al.
Background: The current MR-based attenuation correction (AC) used in combined PET/MR systems computes a Dixon attenuation map (MR-ACDixon) based on fat and water images derived from in- and opposed-phase MRI. We observed ...
Chewing-gum stimulation did not reduce the absorbed dose to salivary glands during radioiodine treatment of thyroid cancer as inferred from pre-therapy (124)I PET/CT imaging [0.03%]
嚼口香糖无法降低放射性碘治疗甲状腺癌时唾液腺的吸收剂量（基于治疗前124I-PET/CT成像推断）
Walter Jentzen,Marion Richter,James Nagarajah et al.
Walter Jentzen et al.
Background: The goal of this prospective study was to estimate the absorbed (radiation) doses to salivary glands in radioiodine therapy of thyroid cancer under chewing-gum stimulation using (124)I positron emission tomogr...
Impact of point spread function modelling and time of flight on FDG uptake measurements in lung lesions using alternative filtering strategies [0.03%]
点扩散函数建模和飞行时间对使用替代滤波策略的肺病变FDG摄取测量的影响
Ian S Armstrong,Matthew D Kelly,Heather A Williams et al.
Ian S Armstrong et al.
Background: The use of maximum standardised uptake value (SUVmax) is commonplace in oncology positron emission tomography (PET). Point spread function (PSF) modelling and time-of-flight (TOF) reconstructions have a signif...
Unconstrained image reconstruction with resolution modelling does not have a unique solution [0.03%]
含分辨率模型的无约束图像重建问题不存在唯一解
Johan Nuyts
Johan Nuyts
Positron emission tomography systems have a finite spatial resolution. When the system point spread function (PSF) is taken into account, the unconstrained reconstruction problem does not have a unique solution. As a result, the solution ob...
The effect of object size on the sensitivity of single photon emission computed tomography: comparison of two CZT cardiac cameras and an Anger scintillation camera [0.03%]
对象大小对单光子发射计算机断层扫描灵敏度的影响：两种CZT心脏相机与Anger闪烁照相仪的比较
Elazar A Bienenstock,Marguerite Ennis
Elazar A Bienenstock
Background: Heart sizes vary greatly across the spectrum of patients referred for myocardial perfusion imaging. We therefore performed a phantom study to explore under controlled circumstances how count rates change when ...
The influence of different signal-to-background ratios on spatial resolution and F18-FDG-PET quantification using point spread function and time-of-flight reconstruction [0.03%]
不同的信噪比对点扩散函数和飞行时间重建的PET空间分辨率及18F-FDG定量的影响研究
Julian Mm Rogasch,Frank Hofheinz,Alexandr Lougovski et al.
Julian Mm Rogasch et al.
Background: F18-fluorodeoxyglucose positron-emission tomography (FDG-PET) reconstruction algorithms can have substantial influence on quantitative image data used, e.g., for therapy planning or monitoring in oncology. We ...
New prospects for PET in prostate cancer imaging: a physicist's viewpoint [0.03%]
前列腺癌影像中PET的新前景——一位物理学家的观点
Maurizio Conti
Maurizio Conti
Prostate cancer is one of the most common forms of cancer among men. Early diagnosis, correct staging, accurate detection of metastasis, and monitoring of the therapy are the key tasks that could greatly benefit from medical imaging. After ...
Robin de Nijs,Björn Neumann Jensen,Jann Mortensen
Robin de Nijs
Due to low counts in an (111)In single photon emission computed tomography (SPECT) scan, a large part of the head was missing in the reconstructed images on Philips Extended Brilliance Workspace (EBW) and IntelliSpace Portal (ISP) workstati...