Document
... Magnetic Resonance Imaging (MRI), or nuclear magnetic resonance imaging (NMRI), is primarily a medical imaging technique most commonly used in radiology to visualize detailed internal structure and limited function of the body. MRI provides much greater contrast between the different soft tissues of ...
... Magnetic Resonance Imaging (MRI), or nuclear magnetic resonance imaging (NMRI), is primarily a medical imaging technique most commonly used in radiology to visualize detailed internal structure and limited function of the body. MRI provides much greater contrast between the different soft tissues of ...
Proceedings 6e Lustrum - Netherlands Commission on Radiation
... errors occurring in brachytherapy. From the analysis and the discussions in these publications brachytherapy errors and accidents are shown to be mainly related to human errors. Additionally, some errors are caused by mechanical events. Mechanical HDR events can be related to control units, compute ...
... errors occurring in brachytherapy. From the analysis and the discussions in these publications brachytherapy errors and accidents are shown to be mainly related to human errors. Additionally, some errors are caused by mechanical events. Mechanical HDR events can be related to control units, compute ...
Dose Reduction Strategies for SPECT/CT and PET/CT
... Diagnostic Reference Levels “Diagnostic reference levels (DRLs), which are a form of investigation levels, represent an important tool to optimize image quality and the radiation dose delivered to patients.” DRL’s help promote (not dictate) good practice for a more specific medical imaging task; an ...
... Diagnostic Reference Levels “Diagnostic reference levels (DRLs), which are a form of investigation levels, represent an important tool to optimize image quality and the radiation dose delivered to patients.” DRL’s help promote (not dictate) good practice for a more specific medical imaging task; an ...
Weightbearing CBCT, MDCT, and 2D imaging dosimetry of the foot
... especially important when considering the adolescent and pediatric populations in whom cellular growth and organ development is associated with increased radiosensitivity of tissues. In conjunction with a longer life expectancy in which cancer can develop, children may be two times to five times mor ...
... especially important when considering the adolescent and pediatric populations in whom cellular growth and organ development is associated with increased radiosensitivity of tissues. In conjunction with a longer life expectancy in which cancer can develop, children may be two times to five times mor ...
Near infrared fluorescent imaging after intravenous injection of
... ICG to bind tumor tissues.10,11 ICG was first described in head and neck oncology after peritumoral injection for sentinel lymph node mapping.5,6 Anatomic constraints of head and neck cancer localization, particularly below the oropharynx, complicated the routine use of this procedure. In 2013, Yoko ...
... ICG to bind tumor tissues.10,11 ICG was first described in head and neck oncology after peritumoral injection for sentinel lymph node mapping.5,6 Anatomic constraints of head and neck cancer localization, particularly below the oropharynx, complicated the routine use of this procedure. In 2013, Yoko ...
Professional capabilities for medical radiation practice
... Before publication, the National Board may remove personally-identifying information from submissions, including contact details. The views expressed in the submissions are those of the individuals or organisations who submit them and their publication does not imply any acceptance of, or agreement ...
... Before publication, the National Board may remove personally-identifying information from submissions, including contact details. The views expressed in the submissions are those of the individuals or organisations who submit them and their publication does not imply any acceptance of, or agreement ...
Professional capabilities for medical radiation practice
... Before publication, the National Board may remove personally-identifying information from submissions, including contact details. The views expressed in the submissions are those of the individuals or organisations who submit them and their publication does not imply any acceptance of, or agreement ...
... Before publication, the National Board may remove personally-identifying information from submissions, including contact details. The views expressed in the submissions are those of the individuals or organisations who submit them and their publication does not imply any acceptance of, or agreement ...
Adult Brain Tumors - Neuroimaging Clinics of North America
... Short echo time allows for recognition of more metabolites than long echo time, which is important for differential diagnosis of brain masses and grading tumors. Higher choline (Cho) levels and lower myoinositol (Myo)/creatine (Cr) ratio are seen in more malignant tumors compared with lower-grad ...
... Short echo time allows for recognition of more metabolites than long echo time, which is important for differential diagnosis of brain masses and grading tumors. Higher choline (Cho) levels and lower myoinositol (Myo)/creatine (Cr) ratio are seen in more malignant tumors compared with lower-grad ...
A potential to reduce pulmonary toxicity: The use of perfusion
... FMLD using IMRT (Fig. 3a and Table 5). In contrast, 8 patients with locally advanced disease had non-uniform perfusion defects scattered within both lungs resulting in larger amount of FL close to PTV (Fig. 2b). Using IMRT in these patients resulted in relative reduction of mean fV20 (p = 0.02; 95% ...
... FMLD using IMRT (Fig. 3a and Table 5). In contrast, 8 patients with locally advanced disease had non-uniform perfusion defects scattered within both lungs resulting in larger amount of FL close to PTV (Fig. 2b). Using IMRT in these patients resulted in relative reduction of mean fV20 (p = 0.02; 95% ...
QUT Digital Repository: This is the author version published as:
... The use of delta troponin, the change in the troponin value over time, has improved the diagnostic accuracy for AMI (41-43). Newer ultra-sensitive troponin assays may be able to utilise very low levels of detection, and employ a ‘delta approach’ that measures change between initial and incremental l ...
... The use of delta troponin, the change in the troponin value over time, has improved the diagnostic accuracy for AMI (41-43). Newer ultra-sensitive troponin assays may be able to utilise very low levels of detection, and employ a ‘delta approach’ that measures change between initial and incremental l ...
bs radiology curriculum - Institute of Paramedical Sciences
... Demonstrate understanding of the basic concepts of professional behaviors and legal implementations of work environment. Demonstrate the knowledge of his/her role in health care delivery system. Establish and maintain continuing education as a faction of growth and maintenance of professional ...
... Demonstrate understanding of the basic concepts of professional behaviors and legal implementations of work environment. Demonstrate the knowledge of his/her role in health care delivery system. Establish and maintain continuing education as a faction of growth and maintenance of professional ...
A study on the magnetic resonance imaging (MRI)
... We propose an MRI-based treatment planning method for intracranial lesions that relies on (a) image distortion correction based on an adaptive thresholding and iterative method, (b) autosegmentation of organ structures relevant to dosimetric calculations (i.e. scalp, bone and brain) using an atlas-b ...
... We propose an MRI-based treatment planning method for intracranial lesions that relies on (a) image distortion correction based on an adaptive thresholding and iterative method, (b) autosegmentation of organ structures relevant to dosimetric calculations (i.e. scalp, bone and brain) using an atlas-b ...
ajnr.org - Reaching for the Stars
... Fiber tracking was performed by using DTIStudio, which uses the fiber-assignment continuous tracking approach.40 By combining information from FA and vector maps, this approach allows 3D reconstruction of fibers in a continuous vector field. The threshold chosen for FA was 0.15 and the angle thresho ...
... Fiber tracking was performed by using DTIStudio, which uses the fiber-assignment continuous tracking approach.40 By combining information from FA and vector maps, this approach allows 3D reconstruction of fibers in a continuous vector field. The threshold chosen for FA was 0.15 and the angle thresho ...
ACR–SPR Practice Parameter for the Performance of Chest
... of the patient, limitations of available resources, or advances in knowledge or technology subsequent to publication of this document. However, a practitioner who employs an approach substantially different from the guidance in this document is advised to document in the patient record information s ...
... of the patient, limitations of available resources, or advances in knowledge or technology subsequent to publication of this document. However, a practitioner who employs an approach substantially different from the guidance in this document is advised to document in the patient record information s ...
Why Quantitative I-131
... • Estimate dose to bladder, salivary glands, other organs with significant uptake ...
... • Estimate dose to bladder, salivary glands, other organs with significant uptake ...
Neuroradiology - LSUHSC Shreveport
... (Introductory Statement Adopted with Modification from the American Society of Neuroradiology) It is expected that residents will progressively develop their abilities to perform and interpret imaging studies of the central nervous system. Residents will be taught the practical clinical skills neces ...
... (Introductory Statement Adopted with Modification from the American Society of Neuroradiology) It is expected that residents will progressively develop their abilities to perform and interpret imaging studies of the central nervous system. Residents will be taught the practical clinical skills neces ...
Medical Imaging Primer with a Focus on X
... such as of inhaled radon gas. Not only are we exposed to natural sources of radiation, but manmade sources, including medical equipment, also contribute to our radiation dose. The radiation that we are exposed to can be ionizing or non-ionizing, depending on whether or not the radiation has enough e ...
... such as of inhaled radon gas. Not only are we exposed to natural sources of radiation, but manmade sources, including medical equipment, also contribute to our radiation dose. The radiation that we are exposed to can be ionizing or non-ionizing, depending on whether or not the radiation has enough e ...
Conceptual Amendment to SB 219 General 1
... Board of Radiology, the American Osteopathic Board of Radiology, the British Royal College of Radiologists, or the Royal College of Physicians and Surgeons of Canada, or their successor organizations, in radiology. “Supervision” means assuming responsibility for and control of the technical aspects ...
... Board of Radiology, the American Osteopathic Board of Radiology, the British Royal College of Radiologists, or the Royal College of Physicians and Surgeons of Canada, or their successor organizations, in radiology. “Supervision” means assuming responsibility for and control of the technical aspects ...
Diagnostic Imaging Services ORDER GUIDE
... hypothyroidism Diagnosis of Grave’s disease Evaluation of subacute and chronic thyroiditis Evaluation of patients who had irradiation of the head and neck in childhood ...
... hypothyroidism Diagnosis of Grave’s disease Evaluation of subacute and chronic thyroiditis Evaluation of patients who had irradiation of the head and neck in childhood ...
diffuse contrast enhancement on mr images in brain infarction
... whose MR images showed diffusely enhancing lesions of other etiologies such as meningioma and metastasis, for the purpose of comparison. ...
... whose MR images showed diffusely enhancing lesions of other etiologies such as meningioma and metastasis, for the purpose of comparison. ...
Routine Shoulder MRI for Evaluating Glenoid Labrum Pathology as
... lesions. Many factors can influence our results such as differences in the quality of each exam, radiologist experience and expertise, presence or absence of a joint effusion and clinical presentation. Although many of our patients had glenoid labrum repairs performed regardless of whether or not it ...
... lesions. Many factors can influence our results such as differences in the quality of each exam, radiologist experience and expertise, presence or absence of a joint effusion and clinical presentation. Although many of our patients had glenoid labrum repairs performed regardless of whether or not it ...
Chapter 15 SPECIAL PROCEDURES AND TECHNIQUES IN
... only a few specialized centres, stereotactic irradiation has during the past 15 years developed into a mainstream radiotherapeutic technique practised in most major radiotherapy centres around the world. Stereotactic irradiation is the term used to describe focal irradiation techniques that use mult ...
... only a few specialized centres, stereotactic irradiation has during the past 15 years developed into a mainstream radiotherapeutic technique practised in most major radiotherapy centres around the world. Stereotactic irradiation is the term used to describe focal irradiation techniques that use mult ...
Image Guided Radiation Therapy Guidelines: ATC QA
... Image guided radiation therapy (IGRT) is defined by this subcommittee as external beam radiation therapy with positional verification using imaging prior to each treatment fraction. Some imaging procedures can result in an additional significant dose to the patient, and are specifically excluded fro ...
... Image guided radiation therapy (IGRT) is defined by this subcommittee as external beam radiation therapy with positional verification using imaging prior to each treatment fraction. Some imaging procedures can result in an additional significant dose to the patient, and are specifically excluded fro ...
GRAPPA-based susceptibility-weighted imaging
... signal to reduce the signal intensity from venous vessels in the magnitude images. Phase masks were constructed from the full complex k-space data of each individual coil element (after the GRAPPA-based reconstruction of the missing k-space lines) through complex division by a lowpass filtered image ...
... signal to reduce the signal intensity from venous vessels in the magnitude images. Phase masks were constructed from the full complex k-space data of each individual coil element (after the GRAPPA-based reconstruction of the missing k-space lines) through complex division by a lowpass filtered image ...
Diagnostic reference levels as a quality assurance tool
... (Radiation Protection Series No.14) states that “the Responsible Person must establish a program to ensure that radiation doses administered to a patient for diagnostic purposes are: 1 Periodically compared with DRL for diagnostic procedures for which DRL have been established in Australia 2 If DR ...
... (Radiation Protection Series No.14) states that “the Responsible Person must establish a program to ensure that radiation doses administered to a patient for diagnostic purposes are: 1 Periodically compared with DRL for diagnostic procedures for which DRL have been established in Australia 2 If DR ...
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.