• 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
Radiologic Technology (W170210) - Florida Department Of Education
Radiologic Technology (W170210) - Florida Department Of Education

... 06.06 Apply the process for evaluating images for adequate density/brightness, contrast, recorded detail/spatial resolution and acceptable limits of distortion. 06.07 Explain how the radiographer determines that an adequate level of penetration has been applied to produce an acceptable image. 06.08 ...
Activity 3.3
Activity 3.3

... Technetium-99m is a radioactive material which is frequently used in every hospital equipped for nuclear medical examination. Technetium is called the workhorse of nuclear medicine. In 1995 in Europe 6 million diagnoses were made by means of technetium and a further growth in technetium demand is to ...
Optimizing radiation dose by varying age at pediatric temporal bone
Optimizing radiation dose by varying age at pediatric temporal bone

... CT in adults, Niu et al.(10) achieved a radiation dose reduction of 50% compared to routine protocols with FBP; diagnostic image quality was maintained. As at level 3, iDose decreases the image noise to 0.78 of the original level; at a 20% radiation reduction, it increased the image noise to 1.12 of ...
Medical Radiography - Loma Linda University
Medical Radiography - Loma Linda University

... determines proper exposure factors, manipulates medical imaging equipment, evaluates the radiograph image for quality, and utilizes film or digital technologies to archive and transmit the patient's examination images for physician evaluation. The technologist may also assist the radiologist physici ...
imaging in hawaii - Diagnostic Imaging Update
imaging in hawaii - Diagnostic Imaging Update

... You can get around Maui by shuttle, tour bus, taxi, or public transpor tation. But to really experience all that Maui offers you should consider reser ving a rental car in advance from the Kahului or Kapalua Airpor t. Special meeting discounts on airfare and car rentals have been arranged for our at ...
Full Text  - RSNA Publications Online
Full Text - RSNA Publications Online

... In radiation protection, the guiding philosophy is ALARA (as low as reasonably achievable), and states have regulatory authority. Dose limits are in part based on effective dose equivalent and differences in tissue sensitivities. In diagnostic radiology, the main source of occupational dose is scatt ...
Technological Sciences for the Operating Room
Technological Sciences for the Operating Room

... – O.R. images superimposed on head of patient • Laser scans patient’s head • Obtains 3-dimensional coordinates • MRI combined with laser scan • Patient’s virtual head superimposed on ...
Imaging Medication White Paper spet 2008
Imaging Medication White Paper spet 2008

... Before outlining each of the safe practice recommendations, it is necessary to address some of the unique considerations and challenges associated with imaging and nuclear medicine areas: (1) the ongoing challenges that limit the ability of a prospective pharmacist review, (2) the important role of ...
Nuclear Medicine in Neuro-Oncology - Society for Neuro
Nuclear Medicine in Neuro-Oncology - Society for Neuro

... lution at the submillimeter level. The current resolution for PET and single-photon emission computed tomography (SPECT) is in the 5 to 10 mm range. PET and SPECT are important tools for evaluating physiologic functions and pathologies in neuro-oncology because of their ability to detect molecular c ...
Investigative Intravenous urography Confirm indication Exclude
Investigative Intravenous urography Confirm indication Exclude

... Doppler effect – denotes frequency shift in wave intereacting with a moving object. Degree of change in frequency proportional to velocity Doppler effect can be enhanced by injection of stable microbubbles – not commonly performed however Computed tomography Fixed X-ray tube with arc of detectors ar ...
CHAPTER 1 The Nature of DICOM
CHAPTER 1 The Nature of DICOM

... sphere of the beam is a fixed ring of detectors that measures how many of the x-rays are being absorbed by the body. Rather than spin around the body, CT scanners now spiral around the body allowing dense and continuous datasets to be acquired. In recent years there has been a rapid development in C ...
Handbook of Nuclear Medicine and Molecular Imaging: Principles
Handbook of Nuclear Medicine and Molecular Imaging: Principles

... The radioisotopes used in PET have a fewer number of neutrons than stable isotopes (e.g., 11 C has only five neutrons, although the stable isotope, 12 C, has six neutrons) and undergo positron decay. As previously described, one of the protons in this unstable isotope is changed into a neutron by em ...
FAQs Radiography Program
FAQs Radiography Program

... Study of the components involved in imaging systems with tests and procedures to evaluate them. State and Federal regulations/guidelines will be discussed. Basic pharmacology will be instructed during this course. SP, SU HHMC Fee: 20.00 RTE2563 Selected Radiographic Special Procedures I, 3.0 sem hrs ...
Dose reduction in maxillofacial imaging using low dose
Dose reduction in maxillofacial imaging using low dose

... beam. The findings resulting from the study are in agreement with other investigations, which have identified the highest absorbed radiation doses in these areas [10,15,22,24]. Contrary, the thyroid gland and the eyes received the lowest radiation dose during tomography, probably because these areas ...
Patient-Centered Radiology
Patient-Centered Radiology

... Thank you for choosing Newport Harbor Radiology Associates. We are the physicians who perform and interpret the procedure you had today. You can be assured that a board certified radiologist, one of our group’s expert sub-specialist physicians, supervised and interpreted your procedure today. The re ...
ct for techs_1 system components
ct for techs_1 system components

... 3. System tools. These tools are the computer languages the system requires to execute the applications. They are also used by service technicians for system maintenance, upgrades, and problem solving. Cathode Ray Tube and the Liquid Crystal Display A cathode ray tube (CRT) is the monitor on which ...
Article (Published version)
Article (Published version)

... of a studied object is nonconstant, and this has a huge impact on emission CST to such an extent that it is impossible to reconstruct a coherent activity map. Fortunately, the reconstruction of the electron density map is provided by the transmission CST; therefore, we use it as prior information fo ...
PET/SPECT imaging agents for neurodegenerative diseases
PET/SPECT imaging agents for neurodegenerative diseases

... The pathology of PD is characterized by a selective loss of dopamine neurons in the basal ganglia and substantia nigra, which damage the nigrostriatal neural transmission system. Treatment of PD with L-DOPA and dopamine agonists has significantly improved the mobility of PD patients. Subthalamic nuc ...
Physics of Medical Imaging – An Introduction
Physics of Medical Imaging – An Introduction

... Modalities are sometimes categorized based on the amount of energy applied to the body. For example, the X-ray modality produces energy that is sufficient to ionize atoms (i.e., eject an electron from an orbit of an atom, thereby creating a positively charged ion that damages human tissue). The moda ...
diffusion weighted magnetic resonance imaging with
diffusion weighted magnetic resonance imaging with

... 6.2 REVIEW OF LITERATURE:Diffusion weighted imaging (DWI) is one of the most recent products of this modern diagnostic era. Diffusion-weighted magnetic resonance (DW-MR) imaging provides potentially unique information on the viability of brain tissue7. It provides image contrast that is dependent on ...
MRI and CT in Neurology
MRI and CT in Neurology

... significant advantages over survey radiographs and myelography. The overall diagnostic sensitivity of MRI is superior to CT for both brain and spinal cord disorders, and as such MRI can be used to image the vast majority of neurologic disorders with few exceptions (e.g. spinal trauma caused by gun s ...
Computed Tomography Angiography as a Non
Computed Tomography Angiography as a Non

... rates and misregistration artifacts secondary to heart rate variability and arrythmia [81-97]. For single source x-ray systems, beta-blockers should be used to decrease the heart rate, dependent on patients tolerance. Motion compensation algorithms allow for more consistent image quality [98] (Figur ...
http://dx.doi.org/10.1016/j.clinimag.2011.09.006 http://espace.library
http://dx.doi.org/10.1016/j.clinimag.2011.09.006 http://espace.library

... Despite increasing mAs to a higher range, most of the CR and DR images are diagnostic with demonstration of these anatomical structures and the incorporated objects and line-pair phantoms, except in the Konica CR1 and Siemens DR systems. Images acquired with two these digital systems were uninterpr ...
RT 124 SPRING WEEK 1 – Part 1 CHEST & ABD A Self Study
RT 124 SPRING WEEK 1 – Part 1 CHEST & ABD A Self Study

... AP SUPINE, UPRIGHT, LLD ...
Radiological Evaluation of Knee Pain
Radiological Evaluation of Knee Pain

... • Medial patellofemoral ligament reconstruction was recommended. ...
< 1 ... 96 97 98 99 100 101 102 103 104 ... 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 © 2025
  • DMCA
  • Privacy
  • Terms
  • Report