CT Radiation Dose Reduction by Modifying Primary Factors
... optimizing fixed tube current. Although body weight remains the most commonly used metric to adjust fixed tube current, other studies have also described the use of transverse diameter estimated ...
... optimizing fixed tube current. Although body weight remains the most commonly used metric to adjust fixed tube current, other studies have also described the use of transverse diameter estimated ...
Right Upper Quadrant Pain - American College of Radiology
... ACR Guidance Document for Safe MR Practices Relative Radiation Level Information Potential adverse health effects associated with radiation exposure are an important factor to consider when selecting the appropriate imaging procedure. Because there is a wide range of radiation exposures associated ...
... ACR Guidance Document for Safe MR Practices Relative Radiation Level Information Potential adverse health effects associated with radiation exposure are an important factor to consider when selecting the appropriate imaging procedure. Because there is a wide range of radiation exposures associated ...
Nuclear Magnetic Resonance Imaging*
... of topical magnetic resonance (TMR). Work to date has demonstrated that the NMR imaging method can distinguish detail in living tissue which is difficult or impossible to visualize by established imaging methods such as X-ray computed tomography (CT) or ultrasound. In addition it avoids the problems ...
... of topical magnetic resonance (TMR). Work to date has demonstrated that the NMR imaging method can distinguish detail in living tissue which is difficult or impossible to visualize by established imaging methods such as X-ray computed tomography (CT) or ultrasound. In addition it avoids the problems ...
01_Hampton Lectures 2011 Harris
... • MRI, CT, PET & multi-modality scans • Standardized linear, volumetric, SUV and density ...
... • MRI, CT, PET & multi-modality scans • Standardized linear, volumetric, SUV and density ...
Brilliance iCT - Philips InCenter
... bolus timing as explained previously. The average heart rate during the scan was 55 ± 4 BPM and images were acquired over just two cardiac cycles. No significant CAD was found. The effective radiation dose was 4.3 mSv, well in line with average annual background radiation levels, and much lower than ...
... bolus timing as explained previously. The average heart rate during the scan was 55 ± 4 BPM and images were acquired over just two cardiac cycles. No significant CAD was found. The effective radiation dose was 4.3 mSv, well in line with average annual background radiation levels, and much lower than ...
ACR–SPR Practice Parameter for General Radiography
... Radiography is a proven and useful modality that uses differences in X-ray attenuation to evaluate human anatomy and pathology. The goal is to establish the presence or absence and nature of disease by demonstrating normal anatomy or the effects of the disease process on anatomical structures. The s ...
... Radiography is a proven and useful modality that uses differences in X-ray attenuation to evaluate human anatomy and pathology. The goal is to establish the presence or absence and nature of disease by demonstrating normal anatomy or the effects of the disease process on anatomical structures. The s ...
A Swallow of The Right Maxillary Posterior Region: CBCT, CT and
... Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Baskent University, Ankara, Turkey Introduction and objectives: Radiographic imaging plays an important role in establishing the odontogenic etiology of the maxillary sinus pathologies. Cone Beam Computed Tomography (CBCT) is often us ...
... Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Baskent University, Ankara, Turkey Introduction and objectives: Radiographic imaging plays an important role in establishing the odontogenic etiology of the maxillary sinus pathologies. Cone Beam Computed Tomography (CBCT) is often us ...
Radiology
... Tumor localization Treatment volume determination Treatment time/dosage determination Choice of treatment modality Determination of number and size of treatment ports Selection of appropriate treatment devices Other procedures Radiology ...
... Tumor localization Treatment volume determination Treatment time/dosage determination Choice of treatment modality Determination of number and size of treatment ports Selection of appropriate treatment devices Other procedures Radiology ...
ICRP
... Computed tomography dose index (CTDI) and Computed tomography air kerma index See Appendix A. Computed tomography number See CT number. Contrast enhancement Administration of intravenous or intra-arterial contrast media (typically containing iodine) to increase the visibility of low-contrast structu ...
... Computed tomography dose index (CTDI) and Computed tomography air kerma index See Appendix A. Computed tomography number See CT number. Contrast enhancement Administration of intravenous or intra-arterial contrast media (typically containing iodine) to increase the visibility of low-contrast structu ...
Positron emission tomography
... information as regards the spatial location of the positron source. In case of true coincidences, the detector pair should ideally produce signals simultaneously but due to limitations of scintillation detector as well as associated electronics, coincidence events are accepted within a finite interv ...
... information as regards the spatial location of the positron source. In case of true coincidences, the detector pair should ideally produce signals simultaneously but due to limitations of scintillation detector as well as associated electronics, coincidence events are accepted within a finite interv ...
All - Electrical and Computer Engineering
... A gamma camera outputs a sequence of gamma ray locations. These are processed to produce a picture. ...
... A gamma camera outputs a sequence of gamma ray locations. These are processed to produce a picture. ...
SNM Practice Guideline for Hepatobiliary Scintigraphy
... care for patients. They are not inflexible rules or requirements of practice and are not intended, nor should they be used, to establish a legal standard of care. For these reasons and those set forth below, the SNM cautions against the use of these Practice Guidelines in litigation in which the cli ...
... care for patients. They are not inflexible rules or requirements of practice and are not intended, nor should they be used, to establish a legal standard of care. For these reasons and those set forth below, the SNM cautions against the use of these Practice Guidelines in litigation in which the cli ...
Low dose CT of the lumbar spine has better image quality than
... The results from the current study have shown that low dose CT improves visualization of most anatomical structures. The strengths of the current study are that five reviewers took part in this study providing a wide range of experience in evaluating image quality, and that the study included tests ...
... The results from the current study have shown that low dose CT improves visualization of most anatomical structures. The strengths of the current study are that five reviewers took part in this study providing a wide range of experience in evaluating image quality, and that the study included tests ...
SNM Practice Guideline for Hepatobiliary Scintigraphy 4.0*
... care for patients. They are not inflexible rules or requirements of practice and are not intended, nor should they be used, to establish a legal standard of care. For these reasons and those set forth below, the SNM cautions against the use of these Practice Guidelines in litigation in which the cli ...
... care for patients. They are not inflexible rules or requirements of practice and are not intended, nor should they be used, to establish a legal standard of care. For these reasons and those set forth below, the SNM cautions against the use of these Practice Guidelines in litigation in which the cli ...
Quantification of partial volume effects in planar imaging
... determination of values for localized radioactivity concentrations in targeted organs [1-3]. The quantitative numerical values from the nuclear medicine images are used to infer on the physiological functions of the organs for successful implementation of diagnostic and therapeutic decisions [1-4]. ...
... determination of values for localized radioactivity concentrations in targeted organs [1-3]. The quantitative numerical values from the nuclear medicine images are used to infer on the physiological functions of the organs for successful implementation of diagnostic and therapeutic decisions [1-4]. ...
Improving patient dose management using
... guided procedures in radiology and cardiology. Interventional fluoroscopes complying with the International Electrotechnical Commission IEC 60601-2-43 [1] provide means for monitoring the Dose Area Product (DAP) and the cumulative dose at a reference point (could be considered as the point on the sk ...
... guided procedures in radiology and cardiology. Interventional fluoroscopes complying with the International Electrotechnical Commission IEC 60601-2-43 [1] provide means for monitoring the Dose Area Product (DAP) and the cumulative dose at a reference point (could be considered as the point on the sk ...
Trends in radiation protection of positron emission tomography
... Over the last decade, there have been significant developments in medical imaging techniques. One of the main evolutions is the combination of positron emission tomography (PET) and computed tomography (CT) on a single gantry as a hybrid PET/CT scanner. This provides both anatomical and functional im ...
... Over the last decade, there have been significant developments in medical imaging techniques. One of the main evolutions is the combination of positron emission tomography (PET) and computed tomography (CT) on a single gantry as a hybrid PET/CT scanner. This provides both anatomical and functional im ...
View Presentation Document
... Bismuth shields are easy to use and have been shown to reduce dose to anterior organs in CT scanning . However, there are several disadvantages associated with the use of bismuth shields, especially when used with automatic exposure control or tube current modulation ...
... Bismuth shields are easy to use and have been shown to reduce dose to anterior organs in CT scanning . However, there are several disadvantages associated with the use of bismuth shields, especially when used with automatic exposure control or tube current modulation ...
Nuclear Physics in Medicine
... of choice for most preclinical scanners. In most solutions the MA-PMT are coupled to pixilated matrices of scintillator. In this case, the coordinates of the photon interaction are obtained via “light-sharing” technique, i.e., by calculating the centroid of the light produced by the crystal on the h ...
... of choice for most preclinical scanners. In most solutions the MA-PMT are coupled to pixilated matrices of scintillator. In this case, the coordinates of the photon interaction are obtained via “light-sharing” technique, i.e., by calculating the centroid of the light produced by the crystal on the h ...
CSCF medical imaging services
... Please note: This module must be read in conjunction with the Fundamentals of the Framework (including glossary and acronym list). Medical imaging is a generic term used to define the use of conventional and sophisticated diagnostic practices. Medical imaging encompasses general radiography, ultraso ...
... Please note: This module must be read in conjunction with the Fundamentals of the Framework (including glossary and acronym list). Medical imaging is a generic term used to define the use of conventional and sophisticated diagnostic practices. Medical imaging encompasses general radiography, ultraso ...
Radiation and MRI Safety
... Analysis reveals that you have been exposed to unacceptably high levels of occupational radiation. You might have: a. Gotten too close to a source of radiation b. Spent too much time around radioactive materials c. Not used appropriate shielding when working with or around radiation d. Any of these ...
... Analysis reveals that you have been exposed to unacceptably high levels of occupational radiation. You might have: a. Gotten too close to a source of radiation b. Spent too much time around radioactive materials c. Not used appropriate shielding when working with or around radiation d. Any of these ...
Daniel B. Kopans, MD, FACR - Society of Breast Imaging
... and cosmetic change to the patient. This helped to permit the expansion of screening mammography. Dr. Kopans is the inventor of the latest advance in Breast Imaging known as Digital Breast Tomosynthesis which is replacing conventional mammography with more three-dimensional information that reduces ...
... and cosmetic change to the patient. This helped to permit the expansion of screening mammography. Dr. Kopans is the inventor of the latest advance in Breast Imaging known as Digital Breast Tomosynthesis which is replacing conventional mammography with more three-dimensional information that reduces ...
Nuclear medicine
Nuclear medicine is a medical specialty involving the application of radioactive substances in the diagnosis and treatment of disease. Nuclear medicine scans are usually conducted by radiographers. Nuclear medicine, in a sense, is ""radiology done inside out"" or ""endoradiology"" because it records radiation emitting from within the body rather than radiation that is generated by external sources like X-rays.