Abstract：
:Managing and optimizing radiation dose has become a core problem for the CT community. As a fundamental step for dose optimization, accurate and computationally efficient dose estimates are crucial. The purpose of this study was to devise a computationally efficient projection-based dose metric. The absorbed energy and object mass were individually modeled using the projection data. The absorbed energy was estimated using the difference between intensity of the primary photon and the exit photon. The mass was estimated using the volume under the attenuation profile. The feasibility of the approach was evaluated across phantoms with a broad size range, various kVp settings, and two bowtie filters, using a simulation tool, the Computer Assisted Tomography SIMulator (CATSIM) software. The accuracy of projection-based dose estimation was validated against Monte Carlo (MC) simulations. The relationship between projection-based dose metric and MC dose estimate was evaluated using regression models. The projection-based dose metric showed a strong correlation with Monte Carlo dose estimates (R (2) > 0.94). The prediction errors for the projection-based dose metric were all below 15 %. This study demonstrated the feasibility of computationally efficient dose estimation requiring only the projection data.
journal_name
J Digit Imagingjournal_title
Journal of digital imagingauthors
Tian X,Yin Z,De Man B,Samei Edoi
10.1007/s10278-016-9869-xsubject
Has Abstractpub_date
2016-10-01 00:00:00pages
615-21issue
5eissn
0897-1889issn
1618-727Xpii
10.1007/s10278-016-9869-xjournal_volume
29pub_type
杂志文章abstract：:Communicating radiological reports to peers has pedagogical value. Students may be uneasy with the process due to a lack of communication and peer review skills or to their failure to see value in the process. We describe a communication exercise with peer review in an undergraduate veterinary radiology course. The co...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-016-9905-x
更新日期：2017-02-01 00:00:00
abstract：:This paper presents our solution for supporting radiologists' interpretation of digital images by automating image presentation during sequential interpretation steps. We extended current hanging protocols with support for "stages" which reflect the presentation of digital information required to complete a single ste...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-004-1906-5
更新日期：2005-06-01 00:00:00
abstract：:Recent technological innovations have created new opportunities for the increased adoption of virtual reality (VR) and augmented reality (AR) applications in medicine. While medical applications of VR have historically seen greater adoption from patient-as-user applications, the new era of VR/AR technology has created...
journal_title：Journal of digital imaging
pub_type： 杂志文章,评审
doi：10.1007/s10278-018-0122-7
更新日期：2019-02-01 00:00:00
abstract：:In the UK, physicists and radiographers perform routine quality control (QC) of digital mammography equipment at daily, weekly and monthly intervals. The tests performed and tolerances are specified by standard protocols. The manual nature of many of the tests introduces variability due to the positioning of regions o...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-014-9759-z
更新日期：2015-10-01 00:00:00
abstract：:Recent healthcare policies have influenced the manner in which patient data is handled in research projects, and the regulations concerning protected health information have become significantly tighter. Thus, new procedures are needed to facilitate research while protecting the confidentiality of patient data and ens...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-010-9350-1
更新日期：2011-10-01 00:00:00
abstract：:Mammographic breast density has been established as an independent risk marker for developing breast cancer. Breast density assessment is a routine clinical need in breast cancer screening and current standard is using the Breast Imaging and Reporting Data System (BI-RADS) criteria including four qualitative categorie...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-017-0022-2
更新日期：2018-08-01 00:00:00
abstract：:Morphometric analysis of nuclei is crucial in cytological examinations. Unfortunately, nuclei segmentation presents many challenges because they usually create complex clusters in cytological samples. To deal with this problem, we are proposing an approach, which combines convolutional neural network and watershed tra...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-019-00200-8
更新日期：2020-02-01 00:00:00
abstract：:To improve radiology access to full uncompressed Digital Imaging and Communications in Medicine (DICOM) data sets, we evaluated satellite access to a DICOM server. Radiologists' home computers were connected by satellite to a Medweb DICOM server (Medweb, San Francisco, CA). A 10.2-kb data set containing a 19-image hea...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/BF03168799
更新日期：1999-05-01 00:00:00
abstract：:An ontology offers a human-readable and machine-computable representation of the concepts in a domain and the relationships among them. Mappings between ontologies enable the reuse and interoperability of biomedical knowledge. We sought to map concepts of the Radiology Gamuts Ontology (RGO), an ontology that links dis...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-019-00186-3
更新日期：2019-04-01 00:00:00
abstract：:The purpose of this study is to assess the accuracy, precision, and rapidity of liver volumes calculated by using a freehand electromagnetic pen tablet contourtracing method as compared with the volumes calculated by using the standard optical mouse contourtracing method. The imaging data used as input for accuracy an...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-010-9291-8
更新日期：2011-04-01 00:00:00
abstract：:The purpose of this communication is to report on the testing of the disaster recovery capability of our hierarchical storage management (HSM) system. Disaster recovery implementation is a requirement of every mission-critical information technology project. Picture archiving and communications systems (PACS) certainl...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/BF03167652
更新日期：2000-05-01 00:00:00
abstract：:An enterprise imaging (EI) strategy is an organized plan to optimize the electronic health record (EHR) so that healthcare providers have intuitive and immediate access to all patient clinical images and their associated documentation, regardless of source. We describe ten steps recommended to achieve the goal of impl...
journal_title：Journal of digital imaging
pub_type： 杂志文章,评审
doi：10.1007/s10278-019-00236-w
更新日期：2019-08-01 00:00:00
abstract：:A long-standing challenge of content-based image retrieval (CBIR) systems is the definition of a suitable distance function to measure the similarity between images in an application context which complies with the human perception of similarity. In this paper, we present a new family of distance functions, called att...
journal_title：Journal of digital imaging
pub_type： 杂志文章,评审
doi：10.1007/s10278-007-9084-x
更新日期：2009-04-01 00:00:00
abstract：:Functional near-infrared spectroscopy (fNIRS) is a relatively new imaging modality in the functional neuroimaging research arena. The fNIRS modality non-invasively investigates the change of blood oxygenation level in the human brain utilizing the transillumination technique. In the last two decades, the interest in t...
journal_title：Journal of digital imaging
pub_type： 杂志文章,评审
doi：10.1007/s10278-020-00387-1
更新日期：2020-10-01 00:00:00
abstract：:In this work, two different approaches are proposed for region of interest (ROI) segmentation using transrectal ultrasound (TRUS) images. The two methods aim to extract informative features that are able to characterize suspicious regions in the TRUS images. Both proposed methods are based on multi-resolution analysis...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-008-9124-1
更新日期：2009-10-01 00:00:00
abstract：:Stereotactic surgery requires knowledge of cerebral structures derived from more than one image source. We have developed a PC-AT-based workstation that accepts patient images, made with the stereotactic frame in place, from CT, MRI, and DSA modalities. Reference markers on the frame are identified in the images to es...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/BF03168023
更新日期：1989-05-01 00:00:00
abstract：:Fusion of CT and MR images allows simultaneous visualization of details of bony anatomy provided by CT image and details of soft tissue anatomy provided by MR image. This helps the radiologist for the precise diagnosis of disease and for more effective interventional treatment procedures. This paper aims at designing ...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-013-9664-x
更新日期：2014-06-01 00:00:00
abstract：:Feedback is an essential part of medical training, where trainees are provided with information regarding their performance and further directions for improvement. In diagnostic radiology, feedback entails a detailed review of the differences between the residents' preliminary interpretation and the attendings' final ...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-017-0015-1
更新日期：2018-02-01 00:00:00
abstract：BACKGROUND:Orthopedic trauma care relies on two-dimensional radiograms both before and during the operation. Understanding the three-dimensional nature of complex fractures on plain radiograms is challenging. Modern fluoroscopes can acquire three-dimensional volume datasets even during an operation, but the device limi...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-007-9078-8
更新日期：2009-10-01 00:00:00
abstract：:Rather than perpetuating the struggle, "who controls the PACS, Radiology or Information Technology (IT)," Community Hospital of the Monterey Peninsula (CHOMP) took the approach of incorporating IT support within the Radiology Department. CHOMP faced the challenge of staffing Radiology computer systems and networks by ...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-002-5048-3
更新日期：2002-01-01 00:00:00
abstract：:With the introduction of digital imaging in radiology, CD-Rs are increasingly used to distribute patient materials. This study investigates the application of a new software package and work protocol to integrate out-hospital data into the local PACS (picture archive and communication system) archive, which is hampere...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-005-5158-9
更新日期：2005-09-01 00:00:00
abstract：:The purpose of this study was to investigate the possible effects of section thickness on volume estimations obtained by cone beam computed tomography. Intraosseal cavities representing bone defects on vestibular sides of the two dry sheep mandibles were scanned by a cone beam computed tomography system. Consecutive s...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-012-9480-8
更新日期：2013-02-01 00:00:00
abstract：:This paper describes a prototype viewing station for the Intensive Care Unit (ICU) that combines a low cost with a fast response for the primary viewing tasks. A single monitor is used together with the possibility to switch to another image on the same screen instantaneously. To reduce the time for image retrieval an...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/BF03168429
更新日期：1994-05-01 00:00:00
abstract：:In this paper, a heuristic approach to automated nipple detection in digital mammograms is presented. A multithresholding algorithm is first applied to segment the mammogram and separate the breast region from the background region. Next, the problem is considered separately for craniocaudal (CC) and mediolateral-obli...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-013-9575-x
更新日期：2013-10-01 00:00:00
abstract：:The objective of this study was to determine the clinical value of computed tomography (CT) image-based texture analysis in predicting microvascular invasion of primary hepatocellular carcinoma (HCC). CT images of patients with HCC from May 2017 to May 2019 confirmed by surgery and histopathology were retrospectively ...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-020-00386-2
更新日期：2020-12-01 00:00:00
abstract：:This article presents a review of image quality assessment methods for monochrome CRTs in the field as opposed to the laboratory. The review includes image quality programs at the University of Washington, the University of Texas at Houston, the University of Michigan, and the University of Arizona. CRT manufacturers ...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/BF03168851
更新日期：1999-11-01 00:00:00
abstract：:A novel medical image quality index using grey relational coefficient calculation is proposed in this study. Three medical modalities, DR, CT and MRI, using 30 or 60 images with a total of 120 images used for experimentation. These images were first compressed at ten different compression ratios (10 ∼ 100) using a med...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-010-9353-y
更新日期：2011-10-01 00:00:00
abstract：:There is increasing prevalence of digital diagnostic imaging in veterinary medicine with a progressive need to use medical imaging software. As Digital Imaging and Communications in Medicine (DICOM)-viewers for veterinary use do not require medical device approval in many countries, freeware viewers might be a practic...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-019-00194-3
更新日期：2020-02-01 00:00:00
abstract：INTRODUCTION:To validate a preliminary version of a radiological lexicon (RadLex) against terms found in thoracic CT reports and to index report content in RadLex term categories. MATERIAL AND METHODS:Terms from a random sample of 200 thoracic CT reports were extracted using a text processor and matched against RadLex...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/s10278-007-9051-6
更新日期：2008-12-01 00:00:00
abstract：:Medical image segmentation is the crucial process for three-dimensional (3D) modeling. Many studies have claimed to suggest more accurate ways of segmentation. However, such research seems to have the drawback that it works against the parsimony principle. These methods have to resegment the regions of interest (ROIs)...
journal_title：Journal of digital imaging
pub_type： 杂志文章
doi：10.1007/BF03190342
更新日期：2001-06-01 00:00:00
