Role of Imaging in the Management of Trauma Victims
... medium-risk factors to be 98.4% sensitive for predicting important brain injury The Canadian CT Head Rule is believed to be effective regardless of possible drug or alcohol intoxication, since no association was demonstrated, in the multicenter survey, between these criteria and the presence of an i ...
... medium-risk factors to be 98.4% sensitive for predicting important brain injury The Canadian CT Head Rule is believed to be effective regardless of possible drug or alcohol intoxication, since no association was demonstrated, in the multicenter survey, between these criteria and the presence of an i ...
draft template - American College of Radiology
... The American College of Radiology, with more than 30,000 members, is the principal organization of radiologists, radiation oncologists, and clinical medical physicists in the United States. The College is a nonprofit professional society whose primary purposes are to advance the science of radiology ...
... The American College of Radiology, with more than 30,000 members, is the principal organization of radiologists, radiation oncologists, and clinical medical physicists in the United States. The College is a nonprofit professional society whose primary purposes are to advance the science of radiology ...
Soft-Tissue Tumors and Tumorlike Lesions
... for imaging to evaluate a softtissue mass in the trunk or extremities. These lesions range from nonneoplastic conditions to benign and malignant tumors. Presently, imaging provides a limited ability to reliably distinguish between benign and malignant soft-tissue lesions. Thus, the primary goal for ...
... for imaging to evaluate a softtissue mass in the trunk or extremities. These lesions range from nonneoplastic conditions to benign and malignant tumors. Presently, imaging provides a limited ability to reliably distinguish between benign and malignant soft-tissue lesions. Thus, the primary goal for ...
Roles of Nuclear Cardiology, Cardiac Computed Tomography, and
... Daniel S. Berman, MD1,2; Rory Hachamovitch, MD3; Leslee J. Shaw, PhD1; John D. Friedman, MD1; Sean W. Hayes, MD1; Louise E.J. Thomson, MBChB1; David S. Fieno, PhD, MD1; Guido Germano, PhD1,2; Piotr Slomka, PhD1,2; Nathan D. Wong, PhD1,4; Xingping Kang, MD1; and Alan Rozanski, MD5 ...
... Daniel S. Berman, MD1,2; Rory Hachamovitch, MD3; Leslee J. Shaw, PhD1; John D. Friedman, MD1; Sean W. Hayes, MD1; Louise E.J. Thomson, MBChB1; David S. Fieno, PhD, MD1; Guido Germano, PhD1,2; Piotr Slomka, PhD1,2; Nathan D. Wong, PhD1,4; Xingping Kang, MD1; and Alan Rozanski, MD5 ...
American Society of Echocardiography Recommendations for Use
... with frequent and repeat testing. Its real-time nature, portability, and relatively low cost make echocardiography adaptable to most clinical or research situations. Hence, echocardiography has been used successfully to provide mechanistic insights on therapeutic outcomes, and in some cases to measu ...
... with frequent and repeat testing. Its real-time nature, portability, and relatively low cost make echocardiography adaptable to most clinical or research situations. Hence, echocardiography has been used successfully to provide mechanistic insights on therapeutic outcomes, and in some cases to measu ...
Chapter 4732 X-ray Definitions: Proposed Revisions to 4732.0110
... Defining only those terms necessary and pertinent to MDH enforcement of ionizing radiation producing equipment Removing regulatory requirements from definitions Eliminating definitions that are obsolete or those that are not used in the rule chapter Referencing Minnesota Rules, Chapter 4731 for stan ...
... Defining only those terms necessary and pertinent to MDH enforcement of ionizing radiation producing equipment Removing regulatory requirements from definitions Eliminating definitions that are obsolete or those that are not used in the rule chapter Referencing Minnesota Rules, Chapter 4731 for stan ...
MR-guided liver biopsy within a short, wide
... Using CT guidance, lesion visualisation in the nonenhanced phase is principally limited, but contrast material improves lesion visualisation for only a brief period of time [6, 7]. During the biopsy, lesion visibility is additionally impaired by needle artefacts. It was reported that up to 45% of sm ...
... Using CT guidance, lesion visualisation in the nonenhanced phase is principally limited, but contrast material improves lesion visualisation for only a brief period of time [6, 7]. During the biopsy, lesion visibility is additionally impaired by needle artefacts. It was reported that up to 45% of sm ...
Clinical Applications of ASL methods
... qualitative interpretation of these images in standard clinical practice. Another area which moved forward in the last year is the of arterial spin labeling CBF measurements in children, which may be an important application because it may be advantageous to avoid gadolinium injection in children or ...
... qualitative interpretation of these images in standard clinical practice. Another area which moved forward in the last year is the of arterial spin labeling CBF measurements in children, which may be an important application because it may be advantageous to avoid gadolinium injection in children or ...
Brain perfusion imaging: How does it work and what should I use?
... question of practicality, in particular when considering the incorporation of routine functional imaging such as perfusion magnetic resonance imaging (MRI). In this article we review the most widely utilized MRI brain perfusion techniques, how the techniques are performed, when each should or should ...
... question of practicality, in particular when considering the incorporation of routine functional imaging such as perfusion magnetic resonance imaging (MRI). In this article we review the most widely utilized MRI brain perfusion techniques, how the techniques are performed, when each should or should ...
Multiparametric magnetic resonance imaging: Current role in
... cancer. For this reason, there is increasing emphasis on a diagnostic strategy towards detecting only “clinically significant” tumors; such tumors are often defined as those with a pathological volume ≥0.5 mL, although other definitions, including the presence of any cancer with a GS ≥ 4 + 3, have also ...
... cancer. For this reason, there is increasing emphasis on a diagnostic strategy towards detecting only “clinically significant” tumors; such tumors are often defined as those with a pathological volume ≥0.5 mL, although other definitions, including the presence of any cancer with a GS ≥ 4 + 3, have also ...
12 Physics and Clinical Aspects of Brachytherapy
... on the biological effect of brachytherapy delivery at higher dose rates, such that a dose biologically equivalent to previous LDR treatments can be delivered. Remote afterloading HDR units, equipped with a high-activity 192Ir source, can deliver an entire treatment fraction in minutes. At such high ...
... on the biological effect of brachytherapy delivery at higher dose rates, such that a dose biologically equivalent to previous LDR treatments can be delivered. Remote afterloading HDR units, equipped with a high-activity 192Ir source, can deliver an entire treatment fraction in minutes. At such high ...
Intracranial Demyelinating Pseudotumor: A Case Report and
... clinical presentation and computed tomography (CT) and magnetic resonance imaging (MRI) imaging findings as brain tumors or abscesses. Unlike brain tumors, demyelinating pseudotumors respond well to steroid hormones. There are only a few reported cases of intracranial demyelinating pseudotumors in t ...
... clinical presentation and computed tomography (CT) and magnetic resonance imaging (MRI) imaging findings as brain tumors or abscesses. Unlike brain tumors, demyelinating pseudotumors respond well to steroid hormones. There are only a few reported cases of intracranial demyelinating pseudotumors in t ...
A Study on Evaluation of kV-CBCT-image-based Treatment
... inhomogeneous media of the phantom was analyzed to quantify the differences in the image quality of CT and CBCT. To assess the effect of radial scatter, three homogeneous phantoms with radial diameters of 10, 20, and 27 cm, respectively, were scanned using CBCT. 2.3 CBCT-image-based planning 2.3.1 I ...
... inhomogeneous media of the phantom was analyzed to quantify the differences in the image quality of CT and CBCT. To assess the effect of radial scatter, three homogeneous phantoms with radial diameters of 10, 20, and 27 cm, respectively, were scanned using CBCT. 2.3 CBCT-image-based planning 2.3.1 I ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... helical-CT units were not originally developed for this purpose. The problems in adapting helical-CT scans for dental use include: high cost, large space requirement, long scanning time, high radiation exposure, and low resolution in the longitudinal direction compared with it‟s relatively high reso ...
... helical-CT units were not originally developed for this purpose. The problems in adapting helical-CT scans for dental use include: high cost, large space requirement, long scanning time, high radiation exposure, and low resolution in the longitudinal direction compared with it‟s relatively high reso ...
Principles and Practice of PET/CT
... dionuclide production equipment work and also they explain what quality checks might be conducted to ensure optimal performance. Given that PET-CT radiation protection requirements are complex, we have included a substantial chapter on this. This comprises three elements – ‘staff’, ‘patient’ and ‘de ...
... dionuclide production equipment work and also they explain what quality checks might be conducted to ensure optimal performance. Given that PET-CT radiation protection requirements are complex, we have included a substantial chapter on this. This comprises three elements – ‘staff’, ‘patient’ and ‘de ...
Principles and Practice of PET/CT
... When considering the value and limitations of PET-CT in routine clinical practice it is important to set the context as there can be marked variations both between and within countries. The first part of this chapter sets out some national UK PET-CT service issues and then gives background informati ...
... When considering the value and limitations of PET-CT in routine clinical practice it is important to set the context as there can be marked variations both between and within countries. The first part of this chapter sets out some national UK PET-CT service issues and then gives background informati ...
EANM guidelines for ventilation / perfusion scintigraphy – Part 1
... role in centres with highly qualified angiographers. Methods based upon magnetic resonance are not yet established and are not discussed further. V/PSCAN for the diagnosis of PE is universally available but imaging protocols and interpretative strategies show large variation. It is important to anal ...
... role in centres with highly qualified angiographers. Methods based upon magnetic resonance are not yet established and are not discussed further. V/PSCAN for the diagnosis of PE is universally available but imaging protocols and interpretative strategies show large variation. It is important to anal ...
Estimativa de dose nos pulmões para procedimentos
... view shows individual detector elements coupled to photodiodes that are layered on substrate electronics, which provide power to the detector system and receive the electronic signal from the photodetector. Opaque filters are pressed into spaces between detector elements to reduce detector cross tal ...
... view shows individual detector elements coupled to photodiodes that are layered on substrate electronics, which provide power to the detector system and receive the electronic signal from the photodetector. Opaque filters are pressed into spaces between detector elements to reduce detector cross tal ...
Pearson`s Comprehensive Medical Assisting
... • Utilized when ultrasound has not provided a definitive diagnosis • Fat-free meal the night before with contrast medium pills • NPO after midnight • Patient undresses and X-ray is taken Pearson's Comprehensive Medical Assisting: Administrative and Clinical Competencies, 2/e Beaman • Fleming-McPhill ...
... • Utilized when ultrasound has not provided a definitive diagnosis • Fat-free meal the night before with contrast medium pills • NPO after midnight • Patient undresses and X-ray is taken Pearson's Comprehensive Medical Assisting: Administrative and Clinical Competencies, 2/e Beaman • Fleming-McPhill ...
A Guide to CT Radiation Dose Management
... Introduced in the early 1970s, computed tomography (CT) has become an invaluable diagnostic tool. Today, approximately 81 million CT scans are performed annually in the United States alone.1 ...
... Introduced in the early 1970s, computed tomography (CT) has become an invaluable diagnostic tool. Today, approximately 81 million CT scans are performed annually in the United States alone.1 ...
Impact of single photon emission tomography combined with
... to 23–31% of patients that may need imaging test [1, 2]. They are related to radiation exposure (high breast exposure unacceptable in premenopausal women: 20–50 mGy v/s 1.3 for V/P scan [3]), or to contrast contraindications (renal failure, severe contrast allergy, diabetics on metformin). V/P SPECT ...
... to 23–31% of patients that may need imaging test [1, 2]. They are related to radiation exposure (high breast exposure unacceptable in premenopausal women: 20–50 mGy v/s 1.3 for V/P scan [3]), or to contrast contraindications (renal failure, severe contrast allergy, diabetics on metformin). V/P SPECT ...
Development and Implementation of an Anthropomorphic Pediatric
... Proton therapy is gaining acceptance as a cancer treatment modality, as it allows for dose deposition to the target volume while sparing the surrounding healthy tissue. This technique is advantageous for craniospinal pediatric patients, as it reduces the radiation side effects that can occur. The pu ...
... Proton therapy is gaining acceptance as a cancer treatment modality, as it allows for dose deposition to the target volume while sparing the surrounding healthy tissue. This technique is advantageous for craniospinal pediatric patients, as it reduces the radiation side effects that can occur. The pu ...
Dental CBCT performance testing for physicists and technologists
... as old panoramic X-ray systems are replaced. CBCT radiation doses are at least an order of magnitude higher than those of the conventional dental radiography techniques that it is intended to supplement or replace. Radiation dose is of concern because much dental X-ray imaging is carried out in chil ...
... as old panoramic X-ray systems are replaced. CBCT radiation doses are at least an order of magnitude higher than those of the conventional dental radiography techniques that it is intended to supplement or replace. Radiation dose is of concern because much dental X-ray imaging is carried out in chil ...
Imaging of the mediastinum: applications for thoracic - lacart-pa
... displacement, or stenosis of vessels by mediastinal masses [6,12,30,31]. Conventional angiography and venography, previously performed routinely in the preoperative assessment of invasive primary mediastinal tumors, are now only occasionally used [7]. Additional indications for MRI include the diagn ...
... displacement, or stenosis of vessels by mediastinal masses [6,12,30,31]. Conventional angiography and venography, previously performed routinely in the preoperative assessment of invasive primary mediastinal tumors, are now only occasionally used [7]. Additional indications for MRI include the diagn ...
Dual Energy CT Attenuation Correction Methods for Quantitative
... Segmentation: Methods can be used to separate the CT image into regions corresponding to different tissue types, which are then replaced with appropriate attenuation coefficients at 511 keV. However, some tissue and bone regions have continuously-varying densities that cannot be accurately represent ...
... Segmentation: Methods can be used to separate the CT image into regions corresponding to different tissue types, which are then replaced with appropriate attenuation coefficients at 511 keV. However, some tissue and bone regions have continuously-varying densities that cannot be accurately represent ...
Neutron capture therapy of cancer
Neutron capture therapy (NCT) is a noninvasive therapeutic modality for treating locally invasive malignant tumors such as primary brain tumors and recurrent head and neck cancer. It is a two step procedure: first, the patient is injected with a tumor localizing drug containing a non-radioactive isotope that has a high propensity or cross section (σ) to capture slow neutrons. The cross section of the capture agent is many times greater than that of the other elements present in tissues such as hydrogen, oxygen, and nitrogen. In the second step, the patient is radiated with epithermal neutrons, which after losing energy as they penetrate tissue, are absorbed by the capture agent which subsequently emits high-energy charged particles, thereby resulting in a biologically destructive nuclear reaction (Fig.1).All of the clinical experience to date with NCT is with the non-radioactive isotope boron-10, and this is known as boron neutron capture therapy (BNCT). At this time, the use of other non-radioactive isotopes, such as gadolinium, has been limited, and to date, it has not been used clinically. BNCT has been evaluated clinically as an alternative to conventional radiation therapy for the treatment of malignant brain tumors (gliomas), and more recently, recurrent, locally advanced head and neck cancer.