SNM Practice Guideline for Hepatobiliary Scintigraphy 4.0*
... The administered activity for infants and children is 1.8 MBq/kg (0.05 mCi/kg), with a minimum administered activity of 18.5 MBq (0.5 mCi) (79). Mebrofenin is always preferred in neonates with hyperbilirubinemia, with a minimum administered activity of 37 MBq (1.0 mCi), as up to 24-h delayed images ...
... The administered activity for infants and children is 1.8 MBq/kg (0.05 mCi/kg), with a minimum administered activity of 18.5 MBq (0.5 mCi) (79). Mebrofenin is always preferred in neonates with hyperbilirubinemia, with a minimum administered activity of 37 MBq (1.0 mCi), as up to 24-h delayed images ...
Development of Spect and Ct Tomographic Image Reconstruction
... no more than two divisions per detector bin width are needed for satisfactory reconstruction. Also, using more than two divisions per detector bin does not significantly improve reconstructed images. A chapter on iterative micro-CT reconstruction is also included. Our contribution to micro-CT recons ...
... no more than two divisions per detector bin width are needed for satisfactory reconstruction. Also, using more than two divisions per detector bin does not significantly improve reconstructed images. A chapter on iterative micro-CT reconstruction is also included. Our contribution to micro-CT recons ...
Patient Dose in common CT examinations-2003
... Since the discovery of X rays and radioactivity more than 100 years ago, different ways of producing radiation and radioactive materials artificially have been found. The first use of X rays was in medical diagnosis, within six months of their discovery in 1895. Diagnostic radiology is concerned wit ...
... Since the discovery of X rays and radioactivity more than 100 years ago, different ways of producing radiation and radioactive materials artificially have been found. The first use of X rays was in medical diagnosis, within six months of their discovery in 1895. Diagnostic radiology is concerned wit ...
4D Target definition for SBRT
... o additional information from MRI/PET should guide delineation, but contouring on CT o MRI , PET to guide delineation- careful when used to guide contouring on a respiratory correlated CT scan 3rd Annual SRS/SBRT Symposium ...
... o additional information from MRI/PET should guide delineation, but contouring on CT o MRI , PET to guide delineation- careful when used to guide contouring on a respiratory correlated CT scan 3rd Annual SRS/SBRT Symposium ...
Claim 2: Longitudinal Stability of Lung - QIBA Wiki
... X-ray CT uses ionizing radiation. Exposure to ionizing radiation increases known health risks to the subject. It is recognized that there are tradeoffs between radiation dose and image quality. As the radiation dose is reduced, image quality can be degraded. Because of these tradeoffs, the use of th ...
... X-ray CT uses ionizing radiation. Exposure to ionizing radiation increases known health risks to the subject. It is recognized that there are tradeoffs between radiation dose and image quality. As the radiation dose is reduced, image quality can be degraded. Because of these tradeoffs, the use of th ...
Magnetic resonance elastography: a rewiev
... [9] and in patients with HCV infection relapse after liver transplantation [10]. It is also used for identifying non-alcoholic steatohepatitis (NASH) among patients with non-alcoholic fatty liver disease (NAFLD). Research concerning the use of elastography in the determination of hepatic tumours has ...
... [9] and in patients with HCV infection relapse after liver transplantation [10]. It is also used for identifying non-alcoholic steatohepatitis (NASH) among patients with non-alcoholic fatty liver disease (NAFLD). Research concerning the use of elastography in the determination of hepatic tumours has ...
magnetic resonance elastography - Collegium Medicum
... [9] and in patients with HCV infection relapse after liver transplantation [10]. It is also used for identifying non-alcoholic steatohepatitis (NASH) among patients with non-alcoholic fatty liver disease (NAFLD). Research concerning the use of elastography in the determination of hepatic tumours has ...
... [9] and in patients with HCV infection relapse after liver transplantation [10]. It is also used for identifying non-alcoholic steatohepatitis (NASH) among patients with non-alcoholic fatty liver disease (NAFLD). Research concerning the use of elastography in the determination of hepatic tumours has ...
Patient dose from kilovoltage cone beam computed tomography
... Kilovoltage cone-beam computerized tomography 共kV-CBCT兲 systems integrated into the gantry of linear accelerators can be used to acquire high-resolution volumetric images of the patient in the treatment position. Using on-line software and hardware, patient position can be determined accurately with ...
... Kilovoltage cone-beam computerized tomography 共kV-CBCT兲 systems integrated into the gantry of linear accelerators can be used to acquire high-resolution volumetric images of the patient in the treatment position. Using on-line software and hardware, patient position can be determined accurately with ...
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 ...
Innova X-ray Dose Efficiency: Objective Evidence
... procedure sites that provided them; the ones using the GE Innova 2100, the Philips Allura XPER FD20 and Philips Allura XPER FD10. As in the 2009 study, the results are blinded by manufacturer. However, by comparing the phantom data in Table 1 of this study to the identical data in Table 1 of the 200 ...
... procedure sites that provided them; the ones using the GE Innova 2100, the Philips Allura XPER FD20 and Philips Allura XPER FD10. As in the 2009 study, the results are blinded by manufacturer. However, by comparing the phantom data in Table 1 of this study to the identical data in Table 1 of the 200 ...
TITLE tracheobronchomalacia in pediatric patients P.CIET , P.WIELOPOLSKI
... scheduled for a spirometer controlled cine-MRI. Half an hour before the MRI all children did a routine upright spirometry coached by a lung function technician. Next, the required breathing maneuvers were repeated in supine position on a stretcher using a MRI-compatible spirometer (custom made Maste ...
... scheduled for a spirometer controlled cine-MRI. Half an hour before the MRI all children did a routine upright spirometry coached by a lung function technician. Next, the required breathing maneuvers were repeated in supine position on a stretcher using a MRI-compatible spirometer (custom made Maste ...
Quality assurance for computed-tomography simulators and the
... • Shall or must are used when the activity is required by various regulatory agencies, • Recommend is used when the task group expects that the procedure should normally be followed as described. However, there may be instances where other issues, techniques or priorities could force the modificatio ...
... • Shall or must are used when the activity is required by various regulatory agencies, • Recommend is used when the task group expects that the procedure should normally be followed as described. However, there may be instances where other issues, techniques or priorities could force the modificatio ...
temel tirkes, md - Temel Tirkes
... conferences, answering questions about the services provided by the Radiology Department. ...
... conferences, answering questions about the services provided by the Radiology Department. ...
Does Iterative Reconstruction Improve Image Quality and Reduce
... an inverse correlation exists between radiation dose and image noise.12 These limitations in image quality can be primarily attributed to the underlying assumptions about scanner geometry that the FBP algorithm is based on, which are mostly deviant from reality.11 These assumptions include a pencil ...
... an inverse correlation exists between radiation dose and image noise.12 These limitations in image quality can be primarily attributed to the underlying assumptions about scanner geometry that the FBP algorithm is based on, which are mostly deviant from reality.11 These assumptions include a pencil ...
Enhancement of Focal Liver Lesions at Gadoxetic Acid–enhanced
... PURPOSE: To detect hepatocyte-selective enhancement of focal lesions with gadoxetic acid at magnetic resonance (MR) imaging and to correlate enhancement in hepatocyte-selective phases with histopathologic findings and in arterial and portal venous phases with biphasic computed tomographic (CT) findi ...
... PURPOSE: To detect hepatocyte-selective enhancement of focal lesions with gadoxetic acid at magnetic resonance (MR) imaging and to correlate enhancement in hepatocyte-selective phases with histopathologic findings and in arterial and portal venous phases with biphasic computed tomographic (CT) findi ...
Compensators for dose and scatter management in cone
... more precise treatment delivery, with numerous techniques developed to accomplish visualization of soft-tissue structures of interest with the patient in treatment position.1 A recently developed technology for soft-tissue visualization and image-guided radiation therapy is kV cone-beam CT 共CBCT兲.2 ...
... more precise treatment delivery, with numerous techniques developed to accomplish visualization of soft-tissue structures of interest with the patient in treatment position.1 A recently developed technology for soft-tissue visualization and image-guided radiation therapy is kV cone-beam CT 共CBCT兲.2 ...
Breast Mri
... magnetic resonance imaging mri of the breast webmd - test overview magnetic resonance imaging mri uses a magnetic field and pulses of radio waves to make pictures of the breast it does not use x rays, breast magnetic resonance imaging mri johns hopkins - what is a breast magnetic resonance imaging m ...
... magnetic resonance imaging mri of the breast webmd - test overview magnetic resonance imaging mri uses a magnetic field and pulses of radio waves to make pictures of the breast it does not use x rays, breast magnetic resonance imaging mri johns hopkins - what is a breast magnetic resonance imaging m ...
Value-added Conversion of Waste Cooking Oil, Post
... biodegradable, nontoxic and has lower greenhouse gas emission profiles compared to petroleum diesel. Polyurethane (PU) products such as PU foams and PU coatings are widely used in many aspects of our life. Traditionally, the PU industry is heavily petroleum dependent because both the feedstocks - is ...
... biodegradable, nontoxic and has lower greenhouse gas emission profiles compared to petroleum diesel. Polyurethane (PU) products such as PU foams and PU coatings are widely used in many aspects of our life. Traditionally, the PU industry is heavily petroleum dependent because both the feedstocks - is ...
Essentials and Guidelines for Clinical Medical Physics Residency Training Programs
... There is a clear need for established standards for medical physics residency training. The complexity of techniques in imaging, nuclear medicine, and radiation oncology continues to increase with each passing year. It is therefore imperative that training requirements and competencies are routinely ...
... There is a clear need for established standards for medical physics residency training. The complexity of techniques in imaging, nuclear medicine, and radiation oncology continues to increase with each passing year. It is therefore imperative that training requirements and competencies are routinely ...
AAPM Report No 249
... There is a clear need for established standards for medical physics residency training. The complexity of techniques in imaging, nuclear medicine, and radiation oncology continues to increase with each passing year. It is therefore imperative that training requirements and competencies are routinely ...
... There is a clear need for established standards for medical physics residency training. The complexity of techniques in imaging, nuclear medicine, and radiation oncology continues to increase with each passing year. It is therefore imperative that training requirements and competencies are routinely ...
Getting Started: A Guide to Year One of Radiology Residency
... will still be asked questions for which you do not know the answer. Your best strategy is to prepare methods of accessing the answers to the most common questions quickly by creating cheat sheets, quick links or institutional references for guidance. Below are suggested ways to best prepare for your ...
... will still be asked questions for which you do not know the answer. Your best strategy is to prepare methods of accessing the answers to the most common questions quickly by creating cheat sheets, quick links or institutional references for guidance. Below are suggested ways to best prepare for your ...
Relationship between Noise, Dose, and Pitch in Cardiac Multi
... In spiral computed tomography (CT), dose is always inversely proportional to pitch. However, the relationship between noise and pitch (and hence noise and dose) depends on the scanner type (single vs multi– detector row) and reconstruction mode (cardiac vs noncardiac). In single detector row spiral ...
... In spiral computed tomography (CT), dose is always inversely proportional to pitch. However, the relationship between noise and pitch (and hence noise and dose) depends on the scanner type (single vs multi– detector row) and reconstruction mode (cardiac vs noncardiac). In single detector row spiral ...
Magnetic resonance spectroscopic imaging: current status in the
... most early prostate cancers. This challenge in diagnosis, localization and staging of potentially curable early disease has prompted further research into radiological imaging which could be more specific and sensitive, and that provides good positive/ negative predictive value (PPV/NPV). MRI is wel ...
... most early prostate cancers. This challenge in diagnosis, localization and staging of potentially curable early disease has prompted further research into radiological imaging which could be more specific and sensitive, and that provides good positive/ negative predictive value (PPV/NPV). MRI is wel ...
3017 Head to Toe 2003 Spreads
... principles. It will also upgrade the participants’ knowledge of the specialty, reinforce information already available, and discuss practice patterns so that radiologists can improve the quality of patient care. The name of the course, “CT/MRI: Head to Toe”, is an accurate description of the intent ...
... principles. It will also upgrade the participants’ knowledge of the specialty, reinforce information already available, and discuss practice patterns so that radiologists can improve the quality of patient care. The name of the course, “CT/MRI: Head to Toe”, is an accurate description of the intent ...
Diagnosis of osteoarthritis: Imaging
... Current US technology offers many advantages, including multiplanar image acquisition, the ability to image dynamic structures in real-time, lack of ionizing radiation [15], and utility in interventional procedures [16,17]. Furthermore, US is cost-effective and can be used without contrast enhanceme ...
... Current US technology offers many advantages, including multiplanar image acquisition, the ability to image dynamic structures in real-time, lack of ionizing radiation [15], and utility in interventional procedures [16,17]. Furthermore, US is cost-effective and can be used without contrast enhanceme ...
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.