• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
6,7,8,9,10
6,7,8,9,10

... anal sphincter and puborectalis muscles in normal children. The muscle thickness was graded by keeping age adjusted range of thickness for external anal sphincter and puborectalis muscles and thereby MRI scoring was categorized as good, moderate/ fair and poor/ severe hypoplasia. The Kelly’s score i ...
Test Equipment for Radiology and CT Quality Control
Test Equipment for Radiology and CT Quality Control

... The phantom can be used in many different ways, but it has mostly been used with an acrylic phantom in order to represent the clinical situation. As image quality is affected by dose, some indicator of surface dose or detector dose needs to be recorded for repeat measurements. In the following examp ...
Vessel Imaging by Interferometric Phase-Contrast X
Vessel Imaging by Interferometric Phase-Contrast X

... Background—Phase-contrast x-ray imaging using an x-ray interferometer has great potential to reveal the structures inside soft tissues, because the sensitivity of this method to hydrogen, carbon, nitrogen, and oxygen is ⬇1000 times higher than that of the absorption-contrast x-ray method. Imaging of ...
Visual Interpretation with Three-Dimensional Annotations (VITA
Visual Interpretation with Three-Dimensional Annotations (VITA

... exams were then downloaded and checked in another workstation to ascertain that all the information was properly rendered and saved. Figure 4 shows a snapshot of VITA. A ClearCanvas measurement tool was used to mark an elliptical region of interest in an MR image of the brain. ClearCanvas workstatio ...
Society of Skeletal Radiology 38 Annual Meeting
Society of Skeletal Radiology 38 Annual Meeting

... FocusSession/SelfAssessmentModuleII:Socioeconomic 1.5credits ...
MDH Veterinary X-ray Regulatory Guide
MDH Veterinary X-ray Regulatory Guide

... emergency procedures, quality control procedures, and proper protective shielding. Additional training must be conducted when there is a change to the radiation safety/quality assurance program, when existing x-ray equipment is upgraded, or when new x-ray equipment is added. Additional training is r ...
Non-contrast enhanced MR angiography: physical principles
Non-contrast enhanced MR angiography: physical principles

... MAGNETIC RESONANCE ANGIOGRAPHY (MRA) applications have been a general application of MRI practice since the inception of clinical MRI. The first applications of MRA were performed without exogenous contrast enhancement. These techniques leveraged the MRrelated differences between flowing and stationar ...
maloca
maloca

... Dr. Peter Maloca and Cyrill Gyger are owner of intellectual property on speckle noise analysis discussed in this publication. Dr. Peter Maloca and Dr Hasler are consultant of Mediconsult/ Topcon but the organisation had no role in the design or conduct of the presented manuscript. Figure 2: Speckle ...
accepted manuscript
accepted manuscript

... radiation source. These techniques are beyond the scope of this paper, and are therefore not ...
Understanding Digital Breast Tomosynthesis
Understanding Digital Breast Tomosynthesis

... “The charge for the 3-D mammography will be set up so you will bill the regular mammography charge plus the add-on charge (they are still looking into the CAD component). The charge for the add-on will be about $X. Generally, insurance companies follow Medicare in their billing and payment methodolo ...
Quantitative 4D Transcatheter Intraarterial Perfusion MRI for
Quantitative 4D Transcatheter Intraarterial Perfusion MRI for

... catheter-directed intraarterial (IA) contrast injections, offers an objective method to monitor intra-procedural tumor perfusion changes during TACE. Prior semi-quantitative TRIP-MRI approaches were developed and validated in animal models and translated clinically for intra-procedural perfusion mon ...
The Musculoskeletal Radiology Milestone Project
The Musculoskeletal Radiology Milestone Project

... Level 4 is designed as the graduation target and does not represent a graduation requirement. Making decisions about readiness for graduation is the purview of the fellowship program director. Study of Milestone performance data will be required before the ACGME and its partners will be able to dete ...
Full Text
Full Text

... applying computed tomography-guided cryoablation in renal tumors, focusing on the technique, safety, and treatment response. Methods: We retrospectively reviewed the medical records of patients who received cryoablation from October 2009 to August 2013 for renal tumor diagnosed by imaging studies pe ...
Usage experience in the otolaryngological field
Usage experience in the otolaryngological field

... Hearing disorders (sound conduction disorders) due to problems with the eardrum or auditory ossicles can sometimes be improved through surgery or the use of hearing aids. For hearing disorders due to problems with the cochlea (sensorineural disorders), improvements in hearing can sometimes be obtain ...
Introduction to BI-RADS® – MRI - American College of Radiology
Introduction to BI-RADS® – MRI - American College of Radiology

... ontrast-enhanced breast magnetic resonance imaging (MRI) has been shown to have very high sensitivity in the detection of breast cancer, particularly invasive breast cancers. Initial studies were disappointing because the high sensitivity was tempered by modest specificity, rendering this technique ...
Original Research
Original Research

... The technique of X-ray CT was invented by Godfrey Hounsfield in 1972. The basic principle behind CT is that the two-dimensional internal structure of an object can be reconstructed from a series of one-dimensional “projections” of the object acquired at different angles. In the conventional CT syste ...
Communication Issues in Radiology
Communication Issues in Radiology

... Is calling enough ? ...
The identification of myocardial viability in the setting of left
The identification of myocardial viability in the setting of left

... Comparison of DE-MRI with other modalities has been favorable. DE-MRI defined viability correlates closely with that defined by FDG-PET (11-12). The advantage of the excellent spatial resolution of DE-MRI is in its ability to detect subendocardial infarction that might otherwise be missed using SPEC ...
Single Photon Emission Computed Tomography
Single Photon Emission Computed Tomography

... used with little loss of primary gamma rays, with some improvement in image contrast. The lower energy and greater width of the Tl-201 photopeak require a wider energy window. An energy window setting of 30% is appropriate for the 70 keV peak of Tl-201, and a 15% energy window is appropriate for the ...
Better detection. Clinically superior. Low dose.1-13
Better detection. Clinically superior. Low dose.1-13

... then add interventional, the 3D MAMMOGRAPHY™ exam and more advanced workflow features with simple upgrades in the future. No matter which Selenia Dimensions package you choose, you’ll be making an investment that pays – both now and in the future. It’s the foundation for a continuing stream of world ...
Standards of Care and Practice Guidelines.
Standards of Care and Practice Guidelines.

... the misalignment factors of the vertebral subluxation. This includes all methods and systems that reduce to or toward normal the misalignment factors of the vertebral subluxation, and which are based upon specific and acceptable principles of misalignment reduction, therefore, pre-determined and pre ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)

... Characterizing Malignant Bone Tumors on Magnetic Resonance Imaging and Review of Literature Chondrosarcoma:Primary chondrosarcoma isthethird most frequent malignant bone tumor after myeloma and osteosarcoma[7]. It is most commonly seen between 30 to 70 yrs. of age, it has male predominance male: fe ...
positron emission tomography/computed tomography in locally
positron emission tomography/computed tomography in locally

... and then surgery. The tumour response following NACT has prognostic significance for disease-free survival and overall survival time [22]. Patients in whom full response is observed macroscopically following chemotherapy have a significantly better prognosis than patients with residual disease [23]. ...
mri visiting fellowship - NYU School of Medicine
mri visiting fellowship - NYU School of Medicine

... 1. Based on evolving technology found in magnetic resonance imaging, participants will interpret clinical indications and imaging findings for applications of MRI in the brain/spine, body, cardiovascular and musculoskeletal systems. 2. Due to the rapid evolution of new technologies in MRI, participa ...
Managing Patient Dose in Multi-Detector Computed Tomography
Managing Patient Dose in Multi-Detector Computed Tomography

... The selection of image quality parameters in AEC systems is not a straightforward process. There is lack of consensus on how image quality is to be specified; with the result that there are significant differences in the ways different companies achieve exposure control. It is important that users a ...
< 1 ... 33 34 35 36 37 38 39 40 41 ... 173 >

Image-guided radiation therapy

Image-guided radiation therapy (IGRT) is the process of frequent two and three-dimensional imaging, during a course of radiation treatment, used to direct radiation therapy utilizing the imaging coordinates of the actual radiation treatment plan. The patient is localized in the treatment room in the same position as planned from the reference imaging dataset. An example of IGRT would include localization of a cone beam computed tomography (CBCT) dataset with the planning computed tomography (CT) dataset from planning. IGRT would also include matching planar kilovoltage (kV) radiographs or megavoltage (MV) images with digital reconstructed radiographs (DRRs) from the planning CT. These two methods comprise the bulk of IGRT strategies currently employed circa 2013.This process is distinct from the use of imaging to delineate targets and organs in the planning process of radiation therapy. However, there is clearly a connection between the imaging processes as IGRT relies directly on the imaging modalities from planning as the reference coordinates for localizing the patient. The variety of medical imaging technologies used in planning includes x-ray computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET) among others. The precision of IGRT is significantly improved when N-localizer technology is used in conjunction with these medical imaging technologies. Through advancements in imaging technology, combined with a further understanding of human biology at the molecular level, the impact of IGRT on radiotherapy treatment continues to evolve.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report