MO-C-BRCD-03: The Role of Informatics in Medical Physics and Vice Versa.

Abstract:

:Like Medical Physics, Imaging Informatics encompasses concepts touching every aspect of the imaging chain from image creation, acquisition, management and archival, to image processing, analysis, display and interpretation. The two disciplines are in fact quite complementary, with similar goals to improve the quality of care provided to patients using an evidence-based approach, to assure safety in the clinical and research environments, to facilitate efficiency in the workplace, and to accelerate knowledge discovery. Use-cases describing several areas of informatics activity will be given to illustrate current limitations that would benefit from medical physicist participation, and conversely areas in which informaticists may contribute to the solution. Topics to be discussed include radiation dose monitoring, process management and quality control, display technologies, business analytics techniques, and quantitative imaging. Quantitative imaging is increasingly becoming an essential part of biomedicalresearch as well as being incorporated into clinical diagnostic activities. Referring clinicians are asking for more objective information to be gleaned from the imaging tests that they order so that they may make the best clinical management decisions for their patients. Medical Physicists may be called upon to identify existing issues as well as develop, validate and implement new approaches and technologies to help move the field further toward quantitative imaging methods for the future. Biomedical imaging informatics tools and techniques such as standards, integration, data mining, cloud computing and new systems architectures, ontologies and lexicons, data visualization and navigation tools, and business analytics applications can be used to overcome some of the existing limitations. LEARNING OBJECTIVES:1. Describe what is meant by Medical Imaging Informatics and understand why the medical physicist should care. 2. Identify existing limitations in information technologies with respect to Medical Physics, and conversely see how Informatics may assist the medical physicist in filling some of the current gaps in their activities. 3. Understand general informatics concepts and areas of investigation including imaging and workflow standards, systems integration, computing architectures, ontologies, data mining and business analytics, data visualization and human-computer interface tools, and the importance of quantitative imaging for the future of Medical Physics and Imaging Informatics. 4. Become familiar with on-going efforts to address current challenges facing future research into and clinical implementation of quantitative imaging applications.

journal_name

Med Phys

journal_title

Medical physics

authors

Andriole K

doi

10.1118/1.4735777

subject

Has Abstract

pub_date

2012-06-01 00:00:00

pages

3864

issue

6Part21

eissn

0094-2405

issn

2473-4209

journal_volume

39

pub_type

杂志文章
  • The generalized geometry of eye plaque therapy.

    abstract::A calculation is described that enables the rapid assessment of dose rate at various points of interest within the eye (lens, optic nerve, etc.) for the treatment of choroidal melanoma by plaque therapy. 125I seeds are used as the radiation source. The location of the plaque and its associated seeds relative to the ey...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.596234

    authors: Kepka AG,Johnson PM,Kline RW

    更新日期:1988-05-01 00:00:00

  • Ultrafast treatment plan optimization for volumetric modulated arc therapy (VMAT).

    abstract:PURPOSE:To develop a novel aperture-based algorithm for volumetric modulated are therapy (VMAT) treatment plan optimization with high quality and high efficiency. METHODS:The VMAT optimization problem is formulated as a large-scale convex programming problem solved by a column generation approach. The authors consider...

    journal_title:Medical physics

    pub_type: 信件

    doi:10.1118/1.3491675

    authors: Men C,Romeijn HE,Jia X,Jiang SB

    更新日期:2010-11-01 00:00:00

  • Voxel clustering for quantifying PET-based treatment response assessment.

    abstract:PURPOSE:Imaging biomarkers are crucial in managing treatment options for cancer patients. They are extremely powerful tools since they allow personalized treatment assessment early during therapy by using repeated imaging to detect and quantify tumor response. Currently, treatment response assessment from consecutive i...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.4764900

    authors: Schreibmann E,Waller AF,Crocker I,Curran W,Fox T

    更新日期:2013-01-01 00:00:00

  • Imaging of moving fiducial markers during radiotherapy using a fast, efficient active pixel sensor based EPID.

    abstract:PURPOSE:The purpose of this work was to investigate the use of an experimental complementary metal-oxide-semiconductor (CMOS) active pixel sensor (APS) for tracking of moving fiducial markers during radiotherapy. METHODS:The APS has an active area of 5.4 × 5.4 cm and maximum full frame read-out rate of 20 frame s(-1),...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.3651632

    authors: Osmond JP,Zin HM,Harris EJ,Lupica G,Allinson NM,Evans PM

    更新日期:2011-11-01 00:00:00

  • SU-D-218-05: Material Quantification in Spectral X-Ray Imaging: Optimization and Validation.

    abstract:PURPOSE:To develop and validate a multivariate statistical method to optimize scanning parameters for material quantification in spectral x-rayimaging. METHODS:An optimization metric was constructed by extensively sampling the thickness space for the expected number of counts for m (two or three) materials. This resul...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.4734708

    authors: Nik SJ,Thing RS,Watts R,Meyer J

    更新日期:2012-06-01 00:00:00

  • An automated procedure for the quality assurance of electron beam output and energy.

    abstract::In this article, we report on the development of a simple and accurate method for quality assurance of electron beam output and energy. Aluminum disks of thicknesses d(max) or d50 of the particular electron energy are positioned sequentially over a parallel-plate ion chamber and the ratio of the two signals is compare...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.1688040

    authors: Woo MK,Videla NG

    更新日期:2004-05-01 00:00:00

  • High-speed photography during ultrasound illustrates potential therapeutic applications of microbubbles.

    abstract::Ultrasound contrast agents consist of microscopically small encapsulated bubbles that oscillate upon insonification. To enhance diagnostic ultrasound imaging techniques and to explore therapeutic applications, these medical microbubbles have been studied with the aid of high-speed photography. We filmed medical microb...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.2133718

    authors: Postema M,van Wamel A,ten Cate FJ,de Jong N

    更新日期:2005-12-01 00:00:00

  • Multileaf collimator performance monitoring and improvement using semiautomated quality control testing and statistical process control.

    abstract:PURPOSE:High-quality radiation therapy using highly conformal dose distributions and image-guided techniques requires optimum machine delivery performance. In this work, a monitoring system for multileaf collimator (MLC) performance, integrating semiautomated MLC quality control (QC) tests and statistical process contr...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.4901520

    authors: Létourneau D,Wang A,Amin MN,Pearce J,McNiven A,Keller H,Norrlinger B,Jaffray DA

    更新日期:2014-12-01 00:00:00

  • SU-E-T-622: A Rapid Hybrid VMAT-IMRT Planning Method Using an Abbreviated Beam Angle Optimization Search.

    abstract:PURPOSE:To generate hybrid VMAT-IMRT treatment plans by utilizing an IMRT beam-angle-optimality (BAO) search under a commercially available TPS without the aid of custom optimization software or high performance computing. METHODS:The high dose modulation provided by IMRT beams can be exploited to improve the quality ...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.4735712

    authors: Schulze D,Ionascu D,Tyagi N

    更新日期:2012-06-01 00:00:00

  • Combined use of transverse and scout computed tomography scans to localize radioactive seeds in an interstitial brachytherapy implant.

    abstract::Various techniques have been developed to localize radioactive sources in brachytherapy implants. The most common methods include the orthogonal film method, the stereo-shift film method, and recently, direct localization from a series of contiguous CT transverse images. The major advantage of the CT method is that it...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.598548

    authors: Yue N,Chen Z,Bond JE,Son YH,Nath R

    更新日期:1999-04-01 00:00:00

  • Noise texture and signal detectability in propagation-based x-ray phase-contrast tomography.

    abstract:PURPOSE:X-ray phase-contrast tomography (PCT) is a rapidly emerging imaging modality for reconstructing estimates of an object's three-dimensional x-ray refractive index distribution. Unlike conventional x-ray computed tomography methods, the statistical properties of the reconstructed images in PCT remain unexplored. ...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.3267548

    authors: Chou CY,Anastasio MA

    更新日期:2010-01-01 00:00:00

  • A method to estimate transmission profiles of bow-tie filters using rotating tube measurements.

    abstract:PURPOSE:The purpose of this paper was to present a method of determining the dose profile of the beam bow-tie filter (BTF) without the need for fixing the x ray tube in a position or using special instruments or dosimeters other than the ordinary types of ion chambers used for CT dosimetry (e.g., Farmer chamber). METH...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1002/mp.13203

    authors: Al-Senan R

    更新日期:2018-11-01 00:00:00

  • Temporal subtraction in chest radiography: mutual information as a measure of image quality.

    abstract:PURPOSE:Temporal subtraction is used to detect the interval change in chest radiographs and aid radiologists in patient diagnosis. This method registers two temporally different images by geometrically warping the lung region, or "lung mask," of a previous radiographic image to align with the current image. The gray le...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.3259712

    authors: Armato SG 3rd,Sensakovic WF,Passen SJ,Engelmann R,MacMahon H

    更新日期:2009-12-01 00:00:00

  • A simple geometric algorithm to predict optimal starting gantry angles using equiangular-spaced beams for intensity modulated radiation therapy of prostate cancer.

    abstract::A fast, geometric beam angle optimization (BAO) algorithm for clinical intensity-modulated radiation therapy (IMRT) was implemented on ten localized prostate cancer patients on the Radiation Therapy Oncology Group (RTOG) 0126 protocol. The BAO algorithm computed the beam intersection volume (BIV) within the rectum and...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.2775685

    authors: Potrebko PS,McCurdy BM,Butler JB,El-Gubtan AS,Nugent Z

    更新日期:2007-10-01 00:00:00

  • Design of a focused collimator for proton therapy spot scanning using Monte Carlo methods.

    abstract:PURPOSE:When designing a collimation system for pencil beam spot scanning proton therapy, a decision must be made whether or not to rotate, or focus, the collimator to match beamlet deflection as a function of off-axis distance. If the collimator is not focused, the beamlet shape and fluence will vary as a function of ...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1002/mp.14139

    authors: Geoghegan TJ,Nelson NP,Flynn RT,Hill PM,Rana S,Hyer DE

    更新日期:2020-07-01 00:00:00

  • Automated matching and segmentation of lymphoma on serial CT examinations.

    abstract::In patients with lymphoma, identification and quantification of the tumor extent on serial CT examinations is critical for assessing tumor response to therapy. In this paper, we present a computer method to automatically match and segment lymphomas in follow-up CT images. The method requires that target lymph nodes in...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.2404617

    authors: Yan J,Zhao B,Curran S,Zelenetz A,Schwartz LH

    更新日期:2007-01-01 00:00:00

  • SU-E-J-139: Feasibility of Using EPID for Real-Time Target Localization during Treatment.

    abstract:PURPOSE:This study aims to investigate the feasibility of using the images of the treatment fields acquired by an electronic portal imaging device (EPID) for real-time target localization. METHODS:Forty one patients treated with IMRT and RapidArc were recruited in this study including 37 prostate patients and 4 lung p...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.4734975

    authors: Xu Q,Lin M,Chen X,Tong X,Fan J,Dong Z,Chen L,Ma C

    更新日期:2012-06-01 00:00:00

  • Experimental study of the relationship between the base impedance and its time derivative in impedance plethysmography.

    abstract::Transthoracic electrical impedance Z consists of a constant baseline component Z0 and the time variable component delta Z such that Z = Z0 + delta Z. The first time derivative of Z has a negative peak, the magnitude of which is (dZ/dt)min. Measurements of 170 volunteers show that (dZ/dt)min is a function of the consta...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.594910

    authors: Djordjevich L,Sadove MS

    更新日期:1981-01-01 00:00:00

  • Improvement of off-axis SABR plan verification results by using adapted dose reconstruction algorithms for the Octavius 4D system.

    abstract:PURPOSE:Stereotactic ablative body radiotherapy (SABR) for lung patients can be performed with volumetric-modulated arc therapy (VMAT) plans using off-axis target geometry to allow treatment in their CBCT verified position. For patient-specific quality assurance measurements using the PTW Octavius 4D phantom (PTW, Frei...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1002/mp.12805

    authors: Jeevanandam P,Agnew CE,Irvine DM,McGarry CK

    更新日期:2018-04-01 00:00:00

  • The use of a priori information in the detection of mammographic microcalcifications to improve their classification.

    abstract::In this work, we present a calcification-detection scheme that automatically localizes calcifications in a previously detected cluster in order to generate the input for a cluster-classification scheme developed in the past. The calcification-detection scheme makes use of three pieces of a priori information: the loca...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.1559884

    authors: Salfity MF,Nishikawa RM,Jiang Y,Papaioannou J

    更新日期:2003-05-01 00:00:00

  • Automatic exposure control in multichannel CT with tube current modulation to achieve a constant level of image noise: experimental assessment on pediatric phantoms.

    abstract::Automatic exposure control (AEC) systems have been developed by computed tomography (CT) manufacturers to improve the consistency of image quality among patients and to control the absorbed dose. Since a multichannel helical CT scan may easily increase individual radiation doses, this technical improvement is of speci...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.2746492

    authors: Brisse HJ,Madec L,Gaboriaud G,Lemoine T,Savignoni A,Neuenschwander S,Aubert B,Rosenwald JC

    更新日期:2007-07-01 00:00:00

  • A beam intensity monitor for the Loma Linda cancer therapy proton accelerator.

    abstract::A beam intensity monitor was tested in a 230-MeV proton beam at the Loma Linda Proton Therapy Accelerator during its commissioning at Fermi National Accelerator Laboratory. The intensity monitor was designed to regulate the beam intensity extracted from the proton synchrotron. The proton beam is tunable between 70 and...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.596636

    authors: Coutrakon G,Miller D,Kross BJ,Anderson DF,DeLuca P Jr,Siebers J

    更新日期:1991-07-01 00:00:00

  • Performance of a 41 x 41 cm2 amorphous silicon flat panel x-ray detector designed for angiographic and R&F imaging applications.

    abstract::We measured the physical imaging performance of a 41 x 41 cm2 amorphous silicon flat panel detector designed for angiographic and R&F imaging applications using methods from the emerging IEC standard for the measurement of detective quantum efficiency (DQE) in digital radiographic detectors. Measurements on 12 product...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.1609151

    authors: Granfors PR,Aufrichtig R,Possin GE,Giambattista BW,Huang ZS,Liu J,Ma B

    更新日期:2003-10-01 00:00:00

  • Vision 20/20: Molecular-guided surgical oncology based upon tumor metabolism or immunologic phenotype: Technological pathways for point of care imaging and intervention.

    abstract::Surgical guidance with fluorescence has been demonstrated in individual clinical trials for decades, but the scientific and commercial conditions exist today for a dramatic increase in clinical value. In the past decade, increased use of indocyanine green based visualization of vascular flow, biliary function, and tis...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.4951732

    authors: Pogue BW,Paulsen KD,Samkoe KS,Elliott JT,Hasan T,Strong TV,Draney DR,Feldwisch J

    更新日期:2016-06-01 00:00:00

  • Evaluating IMRT and VMAT dose accuracy: practical examples of failure to detect systematic errors when applying a commonly used metric and action levels.

    abstract:PURPOSE:This study (1) examines a variety of real-world cases where systematic errors were not detected by widely accepted methods for IMRT/VMAT dosimetric accuracy evaluation, and (2) drills-down to identify failure modes and their corresponding means for detection, diagnosis, and mitigation. The primary goal of detai...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.4826166

    authors: Nelms BE,Chan MF,Jarry G,Lemire M,Lowden J,Hampton C,Feygelman V

    更新日期:2013-11-01 00:00:00

  • Assessing radiation and light field congruence with a video based electronic portal imaging device.

    abstract::Projected light fields are used on treatment simulators and teletherapy treatment units to delineate the size and position of the radiation beam. Any discrepancy between these fields will lead to a systematic field placement error, with possibly serious implications with regard to the accuracy of the delivered dose di...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.597867

    authors: Luchka K,Chen D,Shalev S,Gluhchev G,Rajapakshe R

    更新日期:1996-07-01 00:00:00

  • Image-based 3D modeling study of the influence of vessel density and blood hemoglobin concentration on tumor oxygenation and response to irradiation.

    abstract:PURPOSE:Hypoxia is one of the most important factors influencing clinical outcome after radiotherapy. Improved knowledge of factors affecting the levels and distribution of oxygen within a tumor is needed. The authors constructed a theoretical 3D model based on histological images to analyze the influence of vessel den...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.4773886

    authors: Lagerlöf JH,Kindblom J,Cortez E,Pietras K,Bernhardt P

    更新日期:2013-02-01 00:00:00

  • Imaging of radiation dose by visible color development in ferrous-agarose-xylenol orange gels.

    abstract::Imaging of radiation dose distribution in gel phantoms by magnetic resonance techniques has previously been reported. In this paper a method of producing gels in which the distributions of radiation dose can also be visualized as a color change is reported. The color developed depends qualitatively and quantitatively ...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.596676

    authors: Appleby A,Leghrouz A

    更新日期:1991-03-01 00:00:00

  • Monte Carlo calculation of output factors for circular, rectangular, and square fields of electron accelerators (6-20 MeV).

    abstract::Monte Carlo (MC) techniques can be used to build a simulation model of an electron accelerator to calculate output factors for electron fields. This can be useful during commissioning of electron beams from a linac and in clinical practice where irregular fields are also encountered. The Monte Carlo code BEAM/EGS4 was...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.1373402

    authors: Verhaegen F,Mubata C,Pettingell J,Bidmead AM,Rosenberg I,Mockridge D,Nahum AE

    更新日期:2001-06-01 00:00:00

  • Conceptual design of beryllium targets for the generation of neutron beams for radiation therapy by the (p,n) reaction.

    abstract::A conceptual design is presented showing that, by judiciously choosing the beryllium target thickness and the backstop material, improvements can be achieved in dose-rate, skin sparing, and penetration of neutron beams generated by the same proton accelerator. ...

    journal_title:Medical physics

    pub_type: 杂志文章

    doi:10.1118/1.594748

    authors: Awschalom M,Rosenberg I

    更新日期:1980-09-01 00:00:00