(OPEIR) Performance Measure Set
... High Impact Topic Area This topic was chosen for measure development because imaging studies are a significant source of radiation exposure and because of the high costs associated with these procedures. ...
... High Impact Topic Area This topic was chosen for measure development because imaging studies are a significant source of radiation exposure and because of the high costs associated with these procedures. ...
Applications for OCT Enhanced Depth Imaging
... OCT (SD-OCT) systems,2 images of 3D blocks of tissue can be created, revealing even more previously unavailable information about the geometry of the posterior pole of the living eye. Despite the utility of this imaging modality, conventional OCT has its limits. Imaging of the choroid, the vascular ...
... OCT (SD-OCT) systems,2 images of 3D blocks of tissue can be created, revealing even more previously unavailable information about the geometry of the posterior pole of the living eye. Despite the utility of this imaging modality, conventional OCT has its limits. Imaging of the choroid, the vascular ...
MR Imaging of the Spleen - Geisel School of Medicine
... Arteriovenous malformations can occur anywhere in the human body but rarely occur in the spleen. A machinery-type bruit in the upper left abdominal quadrant represents an important and simple diagnostic symptom found at clinical examination during auscultation (23–25). MR imaging can demonstrate art ...
... Arteriovenous malformations can occur anywhere in the human body but rarely occur in the spleen. A machinery-type bruit in the upper left abdominal quadrant represents an important and simple diagnostic symptom found at clinical examination during auscultation (23–25). MR imaging can demonstrate art ...
Neuroimaging in paediatric epilepsy
... claims, damages, costs, and expenses, including attorneys' fees, arising from or related to your use of these pages. Please note: Links to movies, ppt slideshows and any other multimedia files are not available in the pdf version of presentations. www.myESR.org ...
... claims, damages, costs, and expenses, including attorneys' fees, arising from or related to your use of these pages. Please note: Links to movies, ppt slideshows and any other multimedia files are not available in the pdf version of presentations. www.myESR.org ...
Magnetic Resonance Imaging After Total Hip Arthroplasty
... radiographs was 740.58 mm2 (range, 126 to 1380 mm2), and the mean volume on magnetic resonance images was 43,976.30 mm3 (range, 738 to 436,688 mm3). The mean area of femoral osteolysis on conventional radiographs was 426.68 mm2 (range, 60 to 2035 mm2), and the mean volume on magnetic resonance image ...
... radiographs was 740.58 mm2 (range, 126 to 1380 mm2), and the mean volume on magnetic resonance images was 43,976.30 mm3 (range, 738 to 436,688 mm3). The mean area of femoral osteolysis on conventional radiographs was 426.68 mm2 (range, 60 to 2035 mm2), and the mean volume on magnetic resonance image ...
Accuracy of linear measurement in Galileos cone beam CT under
... The disadvantages also include limited availability of such imaging modalities and increased time to acquire the images. Pantomography is a special tomographic technique that produces a panoramic radiograph of a curved surface. This is a curvilinear complex variant of conventional tomography and is ...
... The disadvantages also include limited availability of such imaging modalities and increased time to acquire the images. Pantomography is a special tomographic technique that produces a panoramic radiograph of a curved surface. This is a curvilinear complex variant of conventional tomography and is ...
Full Text - RSNA Publications Online
... Data Acquisition.—With single-section CT scanners, examination is limited to a 1-cm-thick section. With multisection CT scanners, a 2–3cm-thick section can be examined. Depending on detector configuration, 2– 4 sections with a thickness of 5,6,8,10, or 12 mm can be obtained. In our protocol, two adj ...
... Data Acquisition.—With single-section CT scanners, examination is limited to a 1-cm-thick section. With multisection CT scanners, a 2–3cm-thick section can be examined. Depending on detector configuration, 2– 4 sections with a thickness of 5,6,8,10, or 12 mm can be obtained. In our protocol, two adj ...
GE_HD_750_ CT 数据手册
... allows users to visualize the ECG waveform directly on the CT scanner console during the scan. The waveform data can be viewed to determine where prospectively created images are located with respect to the heart cycle to better understand and avoid motion artifacts like blurring or mis-registration ...
... allows users to visualize the ECG waveform directly on the CT scanner console during the scan. The waveform data can be viewed to determine where prospectively created images are located with respect to the heart cycle to better understand and avoid motion artifacts like blurring or mis-registration ...
M u l t i d e t e c... C T o f S o l i t a... P u l m o n a r y N... *, Bradley S. Sabloff,
... graded the spectrum of bronchioloalveolar carcinoma and invasive adenocarcinoma pathologically into types A through F, representing various degrees of aggressiveness. This grading system showed that the presence of solid component on CT in a ground-glass nodule is concerning for higher grades of ade ...
... graded the spectrum of bronchioloalveolar carcinoma and invasive adenocarcinoma pathologically into types A through F, representing various degrees of aggressiveness. This grading system showed that the presence of solid component on CT in a ground-glass nodule is concerning for higher grades of ade ...
AMERICAN ACADEMY OF NEUROLOGY NEUROIMAGING
... technical/basic aspects of imaging. This may require formal lectures given by imaging scientists and independent study. Clinical aspects include normal anatomy, artifacts, and disease states. Contents are listed by topic according to modality in the Appendix. Prerequisites for the trainee: Neuroimag ...
... technical/basic aspects of imaging. This may require formal lectures given by imaging scientists and independent study. Clinical aspects include normal anatomy, artifacts, and disease states. Contents are listed by topic according to modality in the Appendix. Prerequisites for the trainee: Neuroimag ...
Title Evaluation of radiation dose and image quality for the Varian
... The advent of three-dimensional (3D) cross-sectional imaging, 3D conformal radiotherapy and intensity-modulated radiation therapy (IMRT) has been shown to allow dose escalation and reduce normal tissue toxicity, thus improving local control and disease-free survival [1], [2], [3] and [4]. The planni ...
... The advent of three-dimensional (3D) cross-sectional imaging, 3D conformal radiotherapy and intensity-modulated radiation therapy (IMRT) has been shown to allow dose escalation and reduce normal tissue toxicity, thus improving local control and disease-free survival [1], [2], [3] and [4]. The planni ...
CT for TAVR with low contrast Dose
... Figure 7a: Simulated contrast enhancement curves of the (a) abdominal aorta and (b) liver based on a hypothetical adult male (30 years old; weight, 70 kg; height, 170 cm) who underwent injection of 125 mL of contrast agent (350 mg of iodine per milliliter) at 4 mL/sec. A set of aortic and hepatic co ...
... Figure 7a: Simulated contrast enhancement curves of the (a) abdominal aorta and (b) liver based on a hypothetical adult male (30 years old; weight, 70 kg; height, 170 cm) who underwent injection of 125 mL of contrast agent (350 mg of iodine per milliliter) at 4 mL/sec. A set of aortic and hepatic co ...
Full Text - Journal of The Royal Society Interface
... inspiration time (ti) and expiration time (te). Imaging is synchronized with the ventilator, so that images are acquired at specific time points within the ventilation cycle. During imaging, the animal is rotated through 1808 with respect to the imaging axis, providing projection images at specific ti ...
... inspiration time (ti) and expiration time (te). Imaging is synchronized with the ventilator, so that images are acquired at specific time points within the ventilation cycle. During imaging, the animal is rotated through 1808 with respect to the imaging axis, providing projection images at specific ti ...
Free PDF
... we we suggested the use of inhalatory steroids instead of oral administration, as it is well known that the inhalatory steroids are not able to modify the concentrations of the endogenous corticosteroids, androgens and of their metabolites, with respect to steroids orally administered6. At the last ...
... we we suggested the use of inhalatory steroids instead of oral administration, as it is well known that the inhalatory steroids are not able to modify the concentrations of the endogenous corticosteroids, androgens and of their metabolites, with respect to steroids orally administered6. At the last ...
CNS 2009 - IndiaStudyChannel.com
... imaging in craniovertebral junction pathologies. 6. Describe the anatomy of sella and para sellar regions. Enumerate different tumors in this region and describe in detail imaging features of craniopharyngioma and its differential diagnosis? 7. What is Phakomatosis? Enumerate the various conditions ...
... imaging in craniovertebral junction pathologies. 6. Describe the anatomy of sella and para sellar regions. Enumerate different tumors in this region and describe in detail imaging features of craniopharyngioma and its differential diagnosis? 7. What is Phakomatosis? Enumerate the various conditions ...
Guidance for the Communication of Clinical and Imaging
... It is the opinion of the American Society of Radiologic Technologists that: Methods of Communication and Documentation To create a safe and productive radiology environment, communication between the radiologist assistant and supervising radiologist must be free-flowing, consistent and relevant to t ...
... It is the opinion of the American Society of Radiologic Technologists that: Methods of Communication and Documentation To create a safe and productive radiology environment, communication between the radiologist assistant and supervising radiologist must be free-flowing, consistent and relevant to t ...
Geometric Accuracy of 3-D X-Ray Image
... The results of the simulation are given in Table 1 and for the existing system in Table 2. As one would expect, the localization error is at its lowest point at an angular difference close to 90o . This does not only hold for the primary and secondary angle, but also for combinations as long as the c ...
... The results of the simulation are given in Table 1 and for the existing system in Table 2. As one would expect, the localization error is at its lowest point at an angular difference close to 90o . This does not only hold for the primary and secondary angle, but also for combinations as long as the c ...
Radial MRI of the hip with moderate osteoarthritis
... This will allow cartilage to be distinguished from an effusion, although the depiction of the labrum may become indistinct. To differentiate the articular cartilage of the acetabulum ...
... This will allow cartilage to be distinguished from an effusion, although the depiction of the labrum may become indistinct. To differentiate the articular cartilage of the acetabulum ...
Pretreatment Evaluation of Prostate Cancer: Role of MR Imaging
... potential side effects of the treatment, and patient comorbidity (4 – 6). The most common treatment side effects are erectile dysfunction and urinary incontinence. Efforts to reduce treatment morbidity while maximizing treatment effects have led to the demand for patient-specific and diseasetargeted ...
... potential side effects of the treatment, and patient comorbidity (4 – 6). The most common treatment side effects are erectile dysfunction and urinary incontinence. Efforts to reduce treatment morbidity while maximizing treatment effects have led to the demand for patient-specific and diseasetargeted ...
Clinical commissioning and use of the Novalis Tx linear accelerator
... radiation detectors (up to 10% to approximately 15%)(46-54) and between different institutions, as well.(53) Das et al.(48,53) discussed various detectors and their pros and cons in the context of small field dosimetry. Alfonso et al.(55) proposed a new formalism for small field reference dosimetry. ...
... radiation detectors (up to 10% to approximately 15%)(46-54) and between different institutions, as well.(53) Das et al.(48,53) discussed various detectors and their pros and cons in the context of small field dosimetry. Alfonso et al.(55) proposed a new formalism for small field reference dosimetry. ...
THREE- DIMENSIONAL IMAGING IN RADIOLOGY
... At MGH, we are able to manage this high volume of clinical 3-D image processing as a direct result of the successful implementation of a PACS system with a high-speed image network (1000 base T or gigabit). When the 3-D Imaging Service was established in February 1999, the MGH radiology department w ...
... At MGH, we are able to manage this high volume of clinical 3-D image processing as a direct result of the successful implementation of a PACS system with a high-speed image network (1000 base T or gigabit). When the 3-D Imaging Service was established in February 1999, the MGH radiology department w ...
CONE BEAM COMPUTED TOMOGRAPHY THREE-DIMENSIONAL RECONSTRUCTION FOR EVALUATION OF THE MANDIBULAR CONDYLE
... comprised of low density bone; and that condyles exhibiting significant changes in linear measurements were shown to have higher percentages of low density bone than those condyles with little change from the anatomic truth. Assessment of the mandibular condyle, using the 3D reconstruction, is most ...
... comprised of low density bone; and that condyles exhibiting significant changes in linear measurements were shown to have higher percentages of low density bone than those condyles with little change from the anatomic truth. Assessment of the mandibular condyle, using the 3D reconstruction, is most ...
Parallel Imaging in MRI: Technology, Applications, and
... pursuance of this goal. Understanding the technology of parallel imaging has become important recently as certain protocols that routinely employ it are gaining in popularity. Because it often reduces the number of radio frequency (RF) pulses used in a study, parallel imaging has distinct advantages ...
... pursuance of this goal. Understanding the technology of parallel imaging has become important recently as certain protocols that routinely employ it are gaining in popularity. Because it often reduces the number of radio frequency (RF) pulses used in a study, parallel imaging has distinct advantages ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... Ectopic pregnancy was first recognised by Busiere in 1663 on examining the body of an executed prisoner in Paris. Gifford made a more complete report in 1731 in England, describing the condition in which the fertilised ovum was implanted anywhere outside the uterine cavity [1]. During this decade th ...
... Ectopic pregnancy was first recognised by Busiere in 1663 on examining the body of an executed prisoner in Paris. Gifford made a more complete report in 1731 in England, describing the condition in which the fertilised ovum was implanted anywhere outside the uterine cavity [1]. During this decade th ...
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.