Interfractional and intrafractional setup errors in radiotherapy for
... http://www.landesbioscience.com/journals/cjc/article/7981 ...
... http://www.landesbioscience.com/journals/cjc/article/7981 ...
A novel EPID design for enhanced contrast and detective quantum
... linear accelerator (LINAC) platform for image acquisition. This allows for direct comparison of the MLI to the LINAC-mounted (and clinically used) AS-1200 EPID (further on referred to as reference detector). The MLI features internal parallel readout and digitization of all layers (within the imager ...
... linear accelerator (LINAC) platform for image acquisition. This allows for direct comparison of the MLI to the LINAC-mounted (and clinically used) AS-1200 EPID (further on referred to as reference detector). The MLI features internal parallel readout and digitization of all layers (within the imager ...
Welcome to Radiology
... • Store individually in mini envelopes • Teeth must be identified correctly! • Well-processed film is of good archival quality ...
... • Store individually in mini envelopes • Teeth must be identified correctly! • Well-processed film is of good archival quality ...
Trends in radiation protection of positron emission tomography
... applications. Separately, both PET and CT are considered as high-dose imaging modalities. With the increased use of PET/CT, one could expect an increase in radiation doses to staff and patients. As such, major efforts have been made to reduce radiation dose in PET/CT facilities. Variations in workin ...
... applications. Separately, both PET and CT are considered as high-dose imaging modalities. With the increased use of PET/CT, one could expect an increase in radiation doses to staff and patients. As such, major efforts have been made to reduce radiation dose in PET/CT facilities. Variations in workin ...
Radiographic examination of the temporomandibular joint using
... diagnostic quality. The examination time is shorter and the patient dose is lower than that with conventional CT. It may therefore be considered as the imaging technique of choice when investigation of bony changes of the TMJ is the task at hand. Dentomaxillofacial Radiology (2004) 33, 196–201. doi: ...
... diagnostic quality. The examination time is shorter and the patient dose is lower than that with conventional CT. It may therefore be considered as the imaging technique of choice when investigation of bony changes of the TMJ is the task at hand. Dentomaxillofacial Radiology (2004) 33, 196–201. doi: ...
ACR–SPR Practice Parameter for the Performance of Renal
... patients. Practice Parameters and Technical Standards are not inflexible rules or requirements of practice and are not intended, nor should they be used, to establish a legal standard of care 1. For these reasons and those set forth below, the American College of Radiol ogy and our collaborating med ...
... patients. Practice Parameters and Technical Standards are not inflexible rules or requirements of practice and are not intended, nor should they be used, to establish a legal standard of care 1. For these reasons and those set forth below, the American College of Radiol ogy and our collaborating med ...
Image Acquisition Site - QIBA Wiki
... The following issues have been considered closed by the technical committee. They are provided here to forestall discussion of issues that have already been raised and resolved, and to provide a record of the rationale behind the resolution. Q. Should we specify all three levels (Acceptable, Target, ...
... The following issues have been considered closed by the technical committee. They are provided here to forestall discussion of issues that have already been raised and resolved, and to provide a record of the rationale behind the resolution. Q. Should we specify all three levels (Acceptable, Target, ...
Přednášky z lékařské biofyziky Masarykova univerzita v
... Passage of X-rays through Patient's Body X-rays emitted from a small focal area of the anode propagate in all directions. In the tube envelope, some low energy photons are absorbed. Further absorption of these photons occurs in the primary filter, made of aluminium sheet. It absorbs low energy pho ...
... Passage of X-rays through Patient's Body X-rays emitted from a small focal area of the anode propagate in all directions. In the tube envelope, some low energy photons are absorbed. Further absorption of these photons occurs in the primary filter, made of aluminium sheet. It absorbs low energy pho ...
Parham C, et al. Design and implementation of a compact low
... increases as energy is lowered. To obtain adequate transmission through the body and produce an image with an acceptable signal-to-noise ratio, more incident radiation must ...
... increases as energy is lowered. To obtain adequate transmission through the body and produce an image with an acceptable signal-to-noise ratio, more incident radiation must ...
ICRP PUBLICATION 121: Radiological Protection in Paediatric
... Ionising radiation has been used in medical applications for more than a century. There is no doubt that this has resulted in significant improvements in patient care due to enormous benefits in both diagnosis and therapy. In recent years, the advances in this field have been staggering, with the intro ...
... Ionising radiation has been used in medical applications for more than a century. There is no doubt that this has resulted in significant improvements in patient care due to enormous benefits in both diagnosis and therapy. In recent years, the advances in this field have been staggering, with the intro ...
medical x-ray imaging, current status and some future
... introduction of Coolidge’s rotating x-ray anode tube [7] allowed for great increase in x-ray flux so that the duration of the exposure was diminished to milliseconds which eliminated motionblurring, and also increased the number of patients who could be imaged in a day. Similarly, the use of anti-sc ...
... introduction of Coolidge’s rotating x-ray anode tube [7] allowed for great increase in x-ray flux so that the duration of the exposure was diminished to milliseconds which eliminated motionblurring, and also increased the number of patients who could be imaged in a day. Similarly, the use of anti-sc ...
The Role of the Radiographer in Computed Tomography Imaging
... Radiographers require additional training to operate peripheral devices such as Electrocardiogram (ECG) machines and contrast agent delivery systems safely. This may be undertaken by a combination of in-house training and courses accessed via the SCoR website: https://www.sor.org/learning/post-regis ...
... Radiographers require additional training to operate peripheral devices such as Electrocardiogram (ECG) machines and contrast agent delivery systems safely. This may be undertaken by a combination of in-house training and courses accessed via the SCoR website: https://www.sor.org/learning/post-regis ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... MRI is the preferred modality for identifying the local extent as well as for staging of these tumors. Radiographs provide information regarding lesion location and adjacent periosteal reaction. However, the excellent contrast resolution and multiplanar imaging of MRI enables us to evaluate both int ...
... MRI is the preferred modality for identifying the local extent as well as for staging of these tumors. Radiographs provide information regarding lesion location and adjacent periosteal reaction. However, the excellent contrast resolution and multiplanar imaging of MRI enables us to evaluate both int ...
Pediatric Headaches: When should we image?
... Goal of initial care is to identify cases that require urgent diagnostic evaluation and treatment. These include: – Subarachnoid hemorrhage (SAH) from ruptured aneurysm – Intracranial bleeding from an arteriovenous malformation – Neoplastic lesions – Encephalitis – Meningitis – Intracranial venous ...
... Goal of initial care is to identify cases that require urgent diagnostic evaluation and treatment. These include: – Subarachnoid hemorrhage (SAH) from ruptured aneurysm – Intracranial bleeding from an arteriovenous malformation – Neoplastic lesions – Encephalitis – Meningitis – Intracranial venous ...
SOMATOM Definition AS
... your scan and recon settings based on the characteristics of the chosen organ. This not only reduces the efforts needed to set up an examination, but makes them highly reproducible and less error-prone. Especially the highly time-consuming preparation of a spine recon, is simplified to ideally just ...
... your scan and recon settings based on the characteristics of the chosen organ. This not only reduces the efforts needed to set up an examination, but makes them highly reproducible and less error-prone. Especially the highly time-consuming preparation of a spine recon, is simplified to ideally just ...
CARDIAC CATHETERIZATION EQUIPMENT PERFORMANCE AAPM REPORT NO. 70 Report of Task Group #17
... PREFACE The Cardiac Catheterization Equipment Performance Task Group was formed to provide a reference document that discusses equipment features, physics Quality Control test procedures, and radiation dose issues associated with this equipment. Because Cardiac Catheterization Laboratories are very ...
... PREFACE The Cardiac Catheterization Equipment Performance Task Group was formed to provide a reference document that discusses equipment features, physics Quality Control test procedures, and radiation dose issues associated with this equipment. Because Cardiac Catheterization Laboratories are very ...
radiation protection in diagnostic radiology - RPOP
... VANO, E., et al., Radiation dose and image quality for paediatric interventional cardiology, Paediatric entrance doses from exposure index in computed radiography, Phys Med Biol 53 (2008):3365-3380 INTERNATIONAL COMISSION ON RADIOLOGICAL PROTECTION, Radiation protection in digital radiology, Annals ...
... VANO, E., et al., Radiation dose and image quality for paediatric interventional cardiology, Paediatric entrance doses from exposure index in computed radiography, Phys Med Biol 53 (2008):3365-3380 INTERNATIONAL COMISSION ON RADIOLOGICAL PROTECTION, Radiation protection in digital radiology, Annals ...
Clinical Aspects of General Nuclear Medicine
... In the simplest terms, reducing administered activity will lower the count rate. If the examination’s other acquisition parameters are unchanged, this may result in reduced visibility of the organ(s) of interest, increased image noise and limited detection of disease. If imaging times are increased ...
... In the simplest terms, reducing administered activity will lower the count rate. If the examination’s other acquisition parameters are unchanged, this may result in reduced visibility of the organ(s) of interest, increased image noise and limited detection of disease. If imaging times are increased ...
CT Dose Summit 2011
... • Is there an opportunity for applicants to submit images at their ‘normal’ protocols at which they interpret even if noisier images than ACR criteria? • The ‘standard’ pediatric noise level is higher than adults but a moving target ...
... • Is there an opportunity for applicants to submit images at their ‘normal’ protocols at which they interpret even if noisier images than ACR criteria? • The ‘standard’ pediatric noise level is higher than adults but a moving target ...
Profile: DCEMRI Quantification - QIBA Wiki
... This technique offers a robust, reproducible measure of microvascular parameters associated with human cancers based on kinetic modeling of dynamic MRI data sets. The rigor and details surrounding these data are described throughout the text of this document in various sub-sections. B. Management of ...
... This technique offers a robust, reproducible measure of microvascular parameters associated with human cancers based on kinetic modeling of dynamic MRI data sets. The rigor and details surrounding these data are described throughout the text of this document in various sub-sections. B. Management of ...
Educational Objectives TG113: Improving Treatment Consistency and Data Quality for Clinical Trials
... Skin Marks Skin Marks + Motion ...
... Skin Marks Skin Marks + Motion ...
Flash Speed. Lowest Dose.
... of the SOMATOM Definition Flash and its renowned Flash Spiral, Siemens has established the gold standard for CT – well-known and highly valued for scan speed and low-dose capabilities. In addition, the world’s fastest CT scanner even got better: The SOMATOM Definition Flash is equipped with two Stel ...
... of the SOMATOM Definition Flash and its renowned Flash Spiral, Siemens has established the gold standard for CT – well-known and highly valued for scan speed and low-dose capabilities. In addition, the world’s fastest CT scanner even got better: The SOMATOM Definition Flash is equipped with two Stel ...
j48-2009-jns-neurosurgery
... To quantify the clinical accuracy of the SBR, we computed 2 error measurements: 1) the actual SRE, and 2) the estimated TRE. The actual SRE is the root-mean-square distance between facial surface points on the intraoperative facial surface scan and their closest corresponding points on the MR image/ ...
... To quantify the clinical accuracy of the SBR, we computed 2 error measurements: 1) the actual SRE, and 2) the estimated TRE. The actual SRE is the root-mean-square distance between facial surface points on the intraoperative facial surface scan and their closest corresponding points on the MR image/ ...
Pediatric CT: More than Just “Right-sizing” the Dose
... – Informal Poll of Image Gently Steering Committee ...
... – Informal Poll of Image Gently Steering Committee ...
The Benefits of Dual-Energy Subtraction Radiography of the Chest
... On 4/17/2013 the Radiologic Technology Certification Committee (RTCC) held its biannual meeting in Los Angeles. ACVP, their various speakers some who hold the RCIS credential, a JD credentialed attorney and a MD credentialed Cardiologist presented their case to gain committee support. The goal of th ...
... On 4/17/2013 the Radiologic Technology Certification Committee (RTCC) held its biannual meeting in Los Angeles. ACVP, their various speakers some who hold the RCIS credential, a JD credentialed attorney and a MD credentialed Cardiologist presented their case to gain committee support. The goal of th ...