• 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
ScImage`s PICOM365 Enterprise PACS validated by Veterans
ScImage`s PICOM365 Enterprise PACS validated by Veterans

... ScImage, announced that it has completed another significant milestone within the framework of the Veterans Administration (VA) Health System, receiving validation for its PICOM365 Enterprise PACS as “Supported for HL7 Communication” with VistA Imaging. Having already achieved DIACAP accreditation ( ...
Materials covered in lecture - School of Medicine Department of
Materials covered in lecture - School of Medicine Department of

... The estimated lifetime cancer mortality risks from a single fullbody CT examination at age 45. ...
Breast image registration for PET-CT and MR based on 3D
Breast image registration for PET-CT and MR based on 3D

... Registration of images obtained with different breast imaging modalities is the preliminary and mandatory step to combining anatomical and functional breast information. In this paper, we have presented an algorithm for non-rigid registration of 3D breast MRI and PET-CT images based on surface match ...
Internal Auditory Canal CT
Internal Auditory Canal CT

... Diagnostic examinations of the head (head scans) and of other parts of the body (body scans) performed by computerized tomography (CT) scanners are covered if medical and scientific literature and opinion support the effective use of a scan for the condition, and the scan is: (1) reasonable and nece ...
FDA-approved radiopharmaceuticals
FDA-approved radiopharmaceuticals

... based upon elevated blood prostate specific antigen (PSA) levels following initial therapy and non-informative bone scintigraphy, computerized tomography (CT) or magnetic resonance imaging (MRI) to help identify potential sites of prostate cancer recurrence for subsequent histologic confirmation ...
Physician Simulation Orders: Body Stereo - Lung
Physician Simulation Orders: Body Stereo - Lung

... Simulations will not be scheduled unless filled out Stage: ECOG status: CHOOSE Treatment method: Standard SBRT Total Gy: ...
How to Utilize an Open Source DICOM Viewer
How to Utilize an Open Source DICOM Viewer

... patient. With the increased utilization and improved access to advanced imaging in equine veterinary medicine, this collaboration becomes even more important. Advanced imaging modalities such as computed tomography and magnetic resonance imaging are growing rapidly due to high ...
RAD 216 ADVANCED IMAGING MODALITIES DIGITAL IMAGING
RAD 216 ADVANCED IMAGING MODALITIES DIGITAL IMAGING

... monitor. This is accomplished by arraying the screen into a series of rows and columns consisting of discrete squares or rectangles. These tiny boxes are called “pixels,” or picture elements. The entire array is called a “matrix.” ...
acquisition and Radon Transform. ppt
acquisition and Radon Transform. ppt

... [The principle] Several x-ray images of a real-world volume are acquired [The Data] X-ray images (projections) of known orientation, given by data samples. [The Goal] Reconstruct a numeric representation of the volume from these samples. [The Mean] Obtain each voxel value from its pooled trace on th ...
The American College of Radiology Accreditation Overview
The American College of Radiology Accreditation Overview

...  Comprehensive assessment of the medical imaging facility, including structure and outcomes  Participation in ACR registries at no cost  Ongoing process for self-assessment  Recognition that distinguishes your facility to providers, payers, patients and administrators ...
Iterative reconstruction algorithms in nuclear medicine
Iterative reconstruction algorithms in nuclear medicine

... algorithm in both SPECT and PET. In ML-EM every iteration requires a forward projection of the previous estimation into all projections (equal to the number of measured projections). In OS-EM the projection data are divided into ordered subsets. Each subset contains an equal number of projections. A ...
CT of face and jaw (maxillofacial area) - e
CT of face and jaw (maxillofacial area) - e

... CT of Face and Jaw (Maxillofacial area) Providers can expedite a request by submitting a prior authorization request through e-referral and completing the appropriate questionnaire. If all questions are answered, e-referral will determine the status of the case based on the provider’s response. If t ...
67Ga scintigraphy: procedure guidelines for tumour imaging
67Ga scintigraphy: procedure guidelines for tumour imaging

... considered only in cases presenting with high-risk HD and NHL, to identify those patients in whom more aggressive approaches are required? 3. Recently 18F-FDG PET has been shown to be highly accurate in the detection of both HD and NHL. Many investigators use PET for staging of lymphoma patients, de ...
Introduction to Radiology
Introduction to Radiology

... At first I did not like having to watch so many prerecords beforehand for Dr. Benseler's activities, but the method has definitely grown on me because it makes the in class activity so much more useful/beneficial. I think it would be a good idea to stress how important watching them beforehand AND a ...
Course in Medical Imaging
Course in Medical Imaging

... • Knowledge of data analysis, image processing and post processing techniques for the different modalities • Knowledge of technological similarities and differences between the different modalities and choice of equipment for different clinical applications • Knowledge of ionizing radiation related ...
new Frontiers in Musculoskeletal MRI
new Frontiers in Musculoskeletal MRI

... to a close, orthopedic injuries are a common reason for patients to seek medical attention. Magnetic resonance imaging (MRI) is a valuable tool in the diagnosis and management of these injuries. Whether the patient has a suspected meniscal tear in the setting of an acute anterior cruciate ligament ( ...
Imaging of the Musculoskeletal System
Imaging of the Musculoskeletal System

... The radiation dose of x-rays varies based on the body part imaged, the technique used and the views required. The “effective dose” of radiation, used for quantification and comparisons of risk, is the dose averaged over the entire body. This can range from a chest x-ray (0.1 mSv – which corresponds ...
Diagnosis of acute pancreatitis by diffusion
Diagnosis of acute pancreatitis by diffusion

... is not very helpful (8). In pregnant patients, a diagnostic challenge also occurs, since the ionizing radiation acquired during the CT examination is potentially harmful for the fetus (9). At this point, magnetic resonance imaging can be an option in the diagnosis of AP, but it still needs to be fur ...
Introduction to Radiology
Introduction to Radiology

... Does not work well in large or obese patients Resolution less than CT and MRI Air or bowel gas prevents visualization of structures ...
Phase-Contrast X-ray imaging
Phase-Contrast X-ray imaging

... contrast. However for thin tissues with very similar atomic number and only small density variation (such as is often the case in soft tissue imaging) the differences in absorption rates are very small hence the resultant image contrast is generally very poor. However X-rays also exhibit wave-like b ...
Molecular imaging of gliomas with PET
Molecular imaging of gliomas with PET

... reconstruct 3D images by means of standard tomographic techniques that also include scatter correction, random correction, and the effects of attenuation in order to obtain an accurate quantification. The physics of coincidence detection enable high spatial resolution and high sensitivity, which are ...
New Agents and Techniques for Imaging Prostate Cancer
New Agents and Techniques for Imaging Prostate Cancer

... to lymph nodes and the presence of more distant metastases. Patients with organ-confined disease tend to do better than those with extraglandular disease. The approach of combining dynamic contrast-enhanced MRI with T2-weighted MRI at 1.5T and high-spatial-resolution has a specificity of 95% for the ...
Working Instruction for gathering approvals for imaging using
Working Instruction for gathering approvals for imaging using

... by the Head of Radiotherapy Physics, but is not covered in this WI. Exposure will be significantly greater than for diagnostic purposes. Local Medical Physics Experts will review the study protocol and the above forms, and will communicate with each other to ensure that the cumulative dose has been ...
Nuclear Medicine - LSUHSC Shreveport
Nuclear Medicine - LSUHSC Shreveport

... imaging and functional studies 3. Understand the advantanges and disadvantages of various types of blood pool imaging radiopharmaceuticals 4. For the studies learned to date on previous rotations be able to discuss all aspects of nuclear studies, including indications, pathologies, protocols, correl ...
BIOMEDICAL IMAGING MODALITIES: A TUTORIAL Raj Acharya
BIOMEDICAL IMAGING MODALITIES: A TUTORIAL Raj Acharya

... are labelled with gamma ray emitting radionuclides. The emitted gamma rays are measured at sites external to a patient. Such measured data may be utilized to reconstruct a 3D mapping of internal emission density. A 3D image is generated by reconstructing a measured set of 2D projection images acquir ...
< 1 ... 62 63 64 65 66 67 68 69 70 ... 99 >

Positron emission tomography



Positron emission tomography (PET) is a nuclear medicine, functional imaging technique that produces a three-dimensional image of functional processes in the body. The system detects pairs of gamma rays emitted indirectly by a positron-emitting radionuclide (tracer), which is introduced into the body on a biologically active molecule. Three-dimensional images of tracer concentration within the body are then constructed by computer analysis. In modern PET-CT scanners, three dimensional imaging is often accomplished with the aid of a CT X-ray scan performed on the patient during the same session, in the same machine.If the biologically active molecule chosen for PET is fluorodeoxyglucose (FDG), an analogue of glucose, the concentrations of tracer imaged will indicate tissue metabolic activity as it corresponds to the regional glucose uptake. Use of this tracer to explore the possibility of cancer metastasis (i.e., spreading to other sites) is the most common type of PET scan in standard medical care (90% of current scans). However, on a minority basis, many other radioactive tracers are used in PET to image the tissue concentration of other types of molecules of interest. One of the disadvantages of PET scanners is their operating cost.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report