Authors: Izabella L. Barreto, Aroon Pressram
Affiliation: University of Florida College of Medicine, University of Florida
Abstract Preview: Purpose: Our clinical dual energy CT (DECT) head protocol reconstructs iodine-suppressed virtual non-contrast (VNC) images using the vendor-recommended slope for material discrimination. However, this...
Authors: Austen N. Curcuru, Arash Darafsheh, Winter Green, Yao Hao, Baozhou Sun, Tiezhi Zhang, Tianyu Zhao, Xiandong Zhao
Affiliation: WashU Medicine, Washington University School of Medicine, Department of Radiation Oncology, Washington University School of Medicine, Washington University in St. Louis, University of South Florida, Baylor College of Medicine
Abstract Preview: Purpose: Intensity modulated proton therapy (IMPT) requires precise setup imaging due to the sharp dose gradients and rapid distal fall-off seen in proton therapy dose distributions. Additionally, onl...
Authors: Kainoa Calistro-Allen, Brendon J. Villegas
Affiliation: University of Alabama Birmingham
Abstract Preview: Purpose:
To compare differences in radiation output and image quality in clinical esophagrams across fluoroscope vendors in use at University of Alabama Birmingham, prompted by reports that a newly...
Authors: Afrouz Ataei, Andrew R. Godley, Mi-Ae Park, Mahbubur Rahman, Liqiang Ren, Chenyang Shen, Gary Xu
Affiliation: Department of Radiology, UT Southwestern Medical Center, UT Southwestern Medical Center, Rush University, Imaging Services, UT Southwestern Medical Center
Abstract Preview: Purpose: Even though many patients undergo diagnostic CT scans prior to treatment, simulation CT scans are commonly required for treatment planning. This study evaluates whether prior diagnostic CT sc...
Authors: Tanxia Qu, Hesheng Wang
Affiliation: NYU Langone Health
Abstract Preview: Purpose:
This study, the second in a two-part series, evaluates the isocenter position (the point in 3D space minimizing the sum of Euclidean distances to the MLC's central axis) and isocenter size...
Authors: Matthew Stephen Andriotty, Chi Ma, Xiao Wang, Keying (Karen) Xu, Suhong Yu, Ning J. Yue, Yin Zhang
Affiliation: Brigham and Women's Hospital, Rutgers Cancer Institute of New Jersey
Abstract Preview: Purpose: To evaluate the effects of overlapping CT reconstruction on dosimetry calculation for LINAC-based SRS patients simulated on CT simulators from three different vendors.
Methods: CT simulati...
Authors: Martin Auerbach, Jeremie Calais, Johannes Czernin, Magnus Dahlbom, Zachary Ells, Adrien Holzgreve, Koichiro Kimura, Karam Masri, Catherine (Caffi) Meyer, David Sennung
Affiliation: Department of Nuclear Medicine, UCLA, UCLA, University of California, Los Angeles
Abstract Preview: Purpose: Lutetium-177 PSMA SPECT/CT imaging offers the possibility of qualitative image analysis for tumor response assessment and quantitative image analysis for individualized dosimetry. However, th...
Authors: Li Tong, Chuyan Wang, Zhengkui Wang, Yingli Yang, Jie Zhang
Affiliation: Shanghai United imaging Healthcare Advanced Technology Research Institute, Shanghai United Imaging Healthcare Co., LTD, Department of Radiology, Ruijin Hospital, Institute for Medical Imaging Technology, Ruijin Hospital
Abstract Preview: Purpose:
Pelvic radiotherapy (RT)-induced bone marrow (BM) damage affects patient prognosis by causing hematologic toxicity. However, consensus on BM-sparing (BMS) RT is still lacking, owing to the...
Authors: Emily Y. Hirata, Xiaoyu Sherry Liu, Evan Porter, Manju Sharma
Affiliation: University of California San Francisco, University of California, San Francisco, University of California
Abstract Preview: Purpose:
The Varian Halcyon Linear Accelerator has become increasingly popular in both community hospitals and academic institutions due to its user-friendly design and operational efficiency. This...
Authors: Nicholas Carlson, Joel J. St-Aubin
Affiliation: University of Iowa Hospitals and Clinics, University of Iowa
Abstract Preview: Purpose: To establish baselines metrics and determine longitudinal accuracy and reproducibility of Diffusion-Weighted Imaging (DWI) and Apparent Diffusion Coefficient (ADC) values for a 1.5T Elekta Un...
Authors: Zhihua Qi
Affiliation: Henry Ford Health
Abstract Preview: Purpose: State of the art cardiac CT has built-in automated, patient specific optimization, taking into account a number of factors including patient size, heart rate and others. It is crucial to deve...
Authors: Renxin Chu, Jelena Mihailovic, Kai Yang, Lifeng Yu, Da Zhang
Affiliation: Massachusetts General Hospital, Mayo Clinic, Boston Children's Hospital, UVA Health University Hospital, University of Missouri Health Care
Abstract Preview: Purpose:
A frequently used method to estimate effective dose (ED) in CT is by multiplying the dose length product (DLP) by a conversion factor, known as k-factor. The k-factor in this method is sus...