Dedicated Cone-Beam Breast CT: Feasibility Study with Surgical Mastectomy Specimens
نویسندگان
چکیده
منابع مشابه
Peripheral Quantitative CT (pQCT) Using a Dedicated Extremity Cone-Beam CT Scanner.
PURPOSE We describe the initial assessment of the peripheral quantitative CT (pQCT) imaging capabilities of a cone-beam CT (CBCT) scanner dedicated to musculoskeletal extremity imaging. The aim is to accurately measure and quantify bone and joint morphology using information automatically acquired with each CBCT scan, thereby reducing the need for a separate pQCT exam. METHODS A prototype CBC...
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The pre-surgical assessment of proposed implant sites requires very specific and accurate data. Imaging has always been used to assist with the implant site assessment but until the recent introduction of cone beam CT scanners, the available imaging had a low value when considering the ratio between diagnostic potential, cost of study, and risk to the patient. CBCT scanners are nearing the end ...
متن کاملAn in vitro evaluation of cone-beam breast CT methods.
Tomosynthesis was developed for mammography, especially breast cancer detection. However, its limited-angular range scan and resultant data incompleteness causes strong image artifacts and distortions. To address this problem, a hybrid imaging method was proposed in our previous work, which combines tomosynthesis and low-resolution CT into a single system to produce fewer artifacts and distorti...
متن کاملFeasibility study on effect and stability of adaptive radiotherapy on kilovoltage cone beam CT
BACKGROUND We have analyzed the stability of CT to density curve of kilovoltage cone-beam computerized tomography (kV CBCT) imaging modality over the period of six months. We also, investigated the viability of using image value to density table (IVDT) generated at different time, for adaptive radiotherapy treatment planning. The consequences of target volume change and the efficacy of kV CBCT ...
متن کاملExact Interior Reconstruction with Cone-Beam CT
Using the backprojection filtration (BPF) and filtered backprojection (FBP) approaches, respectively, we prove that with cone-beam CT the interior problem can be exactly solved by analytic continuation. The prior knowledge we assume is that a volume of interest (VOI) in an object to be reconstructed is known in a subregion of the VOI. Our derivations are based on the so-called generalized PI-se...
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ژورنال
عنوان ژورنال: American Journal of Roentgenology
سال: 2007
ISSN: 0361-803X,1546-3141
DOI: 10.2214/ajr.07.2403