Evaluation and Imaging Features of Malignant Breast Masses
... margins, a thickened echogenic rim, calcifications, extension of tumor into ducts extending toward the nipple, and branching of tumor away from the nipple with variable amounts of shadowing are findings on ultrasound (see Figs. 4.39 through 4.43) associated with malignant lesions (5). In patients wi ...
... margins, a thickened echogenic rim, calcifications, extension of tumor into ducts extending toward the nipple, and branching of tumor away from the nipple with variable amounts of shadowing are findings on ultrasound (see Figs. 4.39 through 4.43) associated with malignant lesions (5). In patients wi ...
The Influence of Accurate Attenuation Correction - ORCA
... resolution) and depth dependant collimator response. These factors and ...
... resolution) and depth dependant collimator response. These factors and ...
Imaging Evaluation of Tricuspid Valve: Analysis of Morphology and
... tifacts arising from high-attenuation superior vena cava contrast enhancement when mixed with unenhanced blood of the inferior vena cava. The right atrial artifacts may be decreased when injections are performed through the femoral vein. The best results, however, may be obtained with simultaneous i ...
... tifacts arising from high-attenuation superior vena cava contrast enhancement when mixed with unenhanced blood of the inferior vena cava. The right atrial artifacts may be decreased when injections are performed through the femoral vein. The best results, however, may be obtained with simultaneous i ...
1 The Nature of Biomedical Images
... A fluoroscopy system uses an image intensifier and a video camera in place of the film to capture the image and display it on a monitor as a movie or video. Images are acquired at a rate of 2 − 8 f rames/s (f ps), with the X-ray beam pulsed at 30 − 100 ms per frame. In computed radiography (CR), a p ...
... A fluoroscopy system uses an image intensifier and a video camera in place of the film to capture the image and display it on a monitor as a movie or video. Images are acquired at a rate of 2 − 8 f rames/s (f ps), with the X-ray beam pulsed at 30 − 100 ms per frame. In computed radiography (CR), a p ...
American Society of Echocardiography Recommendations for Use
... 1). Although many clinical studies have been performed to evaluate echocardiographic techniques per se, these are not the focus of this report. The purpose of this communication is to discuss the utility of echocardiography in enhancing the value of clinical trials by identifying potential mechanism ...
... 1). Although many clinical studies have been performed to evaluate echocardiographic techniques per se, these are not the focus of this report. The purpose of this communication is to discuss the utility of echocardiography in enhancing the value of clinical trials by identifying potential mechanism ...
PACS Implementation Guide - UK Imaging Informatics Group
... Advances in digital technologies, particularly in the fields of computing, imaging and in communication, have progressed to the point that it is now possible to acquire medical images in digital form, archive them on computer systems, and display them in diagnostic quality. The display monitor used ...
... Advances in digital technologies, particularly in the fields of computing, imaging and in communication, have progressed to the point that it is now possible to acquire medical images in digital form, archive them on computer systems, and display them in diagnostic quality. The display monitor used ...
Respiratory Motion Correction in Positron Emission Tomography
... lution of 2 mm FWHM. Because of its relatively poor spatial resolution, PET is normally combined with computed tomography (CT), which provides detailed anatomical information in an excellent spatial resolution of less than 1 mm FWHM. Another benefit of PET combined with CT is that the CT can be used ...
... lution of 2 mm FWHM. Because of its relatively poor spatial resolution, PET is normally combined with computed tomography (CT), which provides detailed anatomical information in an excellent spatial resolution of less than 1 mm FWHM. Another benefit of PET combined with CT is that the CT can be used ...
NIH Public Access - Questions and Answers in MRI
... identifying subjects who are good/poor candidates for bellows gating including gender differences, refining bellows-gating windows, determining the limits on its accuracy, and exploiting its unique feature of continuous respiratory information, some of which are addressed to some degree in this stud ...
... identifying subjects who are good/poor candidates for bellows gating including gender differences, refining bellows-gating windows, determining the limits on its accuracy, and exploiting its unique feature of continuous respiratory information, some of which are addressed to some degree in this stud ...
Contrast echocardiography: evidence
... diagnostic and prognostic information in patients with suspected cardiovascular disease. Accurate and reproducible measurement of LV function is imperative for reliability of information. Several studies, as shown in Table 3, have indicated that contrast-enhanced echocardiography improves the evalua ...
... diagnostic and prognostic information in patients with suspected cardiovascular disease. Accurate and reproducible measurement of LV function is imperative for reliability of information. Several studies, as shown in Table 3, have indicated that contrast-enhanced echocardiography improves the evalua ...
How I Do It: Evaluating Renal Masses
... gradient-echo sequence (3.4/1.2; flip angle, 25°– 40°) before and at multiple time points after administration of 19 mL of a gadolinium-based contrast material. The 3D slab should be kept as thin as possible, without excluding any of the structures that need to be evaluated, to maximize through-plan ...
... gradient-echo sequence (3.4/1.2; flip angle, 25°– 40°) before and at multiple time points after administration of 19 mL of a gadolinium-based contrast material. The 3D slab should be kept as thin as possible, without excluding any of the structures that need to be evaluated, to maximize through-plan ...
Rigid and Non-Rigid Surface Registration in Medicine
... support and guidance over the years – not only as a scientific mentor –, the freedom he allowed me regarding the contents of my work, and for setting up collaborations that built the fundamental basis of this thesis. I would like to thank Prof. Dr. Martin Rumpf (University of Bonn) and Prof. Dr. Ben ...
... support and guidance over the years – not only as a scientific mentor –, the freedom he allowed me regarding the contents of my work, and for setting up collaborations that built the fundamental basis of this thesis. I would like to thank Prof. Dr. Martin Rumpf (University of Bonn) and Prof. Dr. Ben ...
Ultrasound of the liver
... The liver is a large, pyramidal shaped organ and liver sectional anatomy may be best described imaged and defined using by real time ultrasound imaging. Conventional real time ultrasound produces images of thin slices of the liver on the screen, and so it is essential that the operator scans the ent ...
... The liver is a large, pyramidal shaped organ and liver sectional anatomy may be best described imaged and defined using by real time ultrasound imaging. Conventional real time ultrasound produces images of thin slices of the liver on the screen, and so it is essential that the operator scans the ent ...
- AMS Tesi di Dottorato
... Multidetector-row computed tomography (MDCT) is an evolutionary step in advanced imaging techniques based on the superior scanner’s technology and on dedicated medical workstations with highly advanced softwares. Scanning speed is the basic parameter that allowed to obtain high quality images in wid ...
... Multidetector-row computed tomography (MDCT) is an evolutionary step in advanced imaging techniques based on the superior scanner’s technology and on dedicated medical workstations with highly advanced softwares. Scanning speed is the basic parameter that allowed to obtain high quality images in wid ...
Diagnosis of Internal Carotid Artery Stenosis Greater than 70% with
... Endarterectomy Trial (NASCET) proved conclusively the effectiveness of carotid endarterectomy in patients with symptomatic internal carotid artery (ICA) stenosis greater than 70% (1). Although conventional cerebral angiography was used to assess carotid stenosis in the study, this technique carries ...
... Endarterectomy Trial (NASCET) proved conclusively the effectiveness of carotid endarterectomy in patients with symptomatic internal carotid artery (ICA) stenosis greater than 70% (1). Although conventional cerebral angiography was used to assess carotid stenosis in the study, this technique carries ...
Image Quality and Dose Evaluation of Filtered Back Projection
... edge-spread function.(b) Simulated degraded-output images showing raw image data used for the measurements of the PSF, LSF and ESF. The blurring seen in these functions is due to the imperfect resolution properties of the imaging system being characterized.(c) Graphs showing the actual PSF, LSF and ...
... edge-spread function.(b) Simulated degraded-output images showing raw image data used for the measurements of the PSF, LSF and ESF. The blurring seen in these functions is due to the imperfect resolution properties of the imaging system being characterized.(c) Graphs showing the actual PSF, LSF and ...
Multilayer Energy Discriminating Detector for Medical X
... dual-energy subtraction (low- and high-energy images), however these methods suffer from artifacts due to patient motion between image acquisitions. In this research the use of a multilayer flat panel detector is examined for CEM that is designed to acquire both (low- and high-energy) images simulta ...
... dual-energy subtraction (low- and high-energy images), however these methods suffer from artifacts due to patient motion between image acquisitions. In this research the use of a multilayer flat panel detector is examined for CEM that is designed to acquire both (low- and high-energy) images simulta ...
Echocardiography-Guided Interventions – ASE 2009
... Traditionally, percutaneous cardiovascular interventions have predominantly used angiographic and fluoroscopic guidance, which is limited when interventions involve the myocardium, pericardium, and cardiac valves. The purposes of this report are to (1) delineate the role of echocardiography in guidi ...
... Traditionally, percutaneous cardiovascular interventions have predominantly used angiographic and fluoroscopic guidance, which is limited when interventions involve the myocardium, pericardium, and cardiac valves. The purposes of this report are to (1) delineate the role of echocardiography in guidi ...
Planning for PACS - American College of Radiology
... All PACS vendors provide software allowing many functions to be performed at the workstation, and innovations from one vendor are quickly copied by its competitors. Because functionality is usually more than adequate, preferences are mostly subjective. It is more important to consider the ease of th ...
... All PACS vendors provide software allowing many functions to be performed at the workstation, and innovations from one vendor are quickly copied by its competitors. Because functionality is usually more than adequate, preferences are mostly subjective. It is more important to consider the ease of th ...
Significant Coronary Artery Stenosis: Comparison on Per
... patients suspected of having coronary artery disease (CAD) is highly desirable to differentiate patients with from those without significant (ⱖ50%) stenosis (1). Currently, contrast material– enhanced multi– detector row computed tomographic (CT) angiography appears to provide the most promising com ...
... patients suspected of having coronary artery disease (CAD) is highly desirable to differentiate patients with from those without significant (ⱖ50%) stenosis (1). Currently, contrast material– enhanced multi– detector row computed tomographic (CT) angiography appears to provide the most promising com ...
Asymmetric Mammographic Findings Based on Fourth Edition of BI
... normal fibroglandular breast structures), true lesions may also appear on only one view when they are in anatomic locations beyond the limits of the image receptor (eg, in the axillary tail or in a posterior location [Fig 9]) or breast positioning during mammographic examination is not optimized to ...
... normal fibroglandular breast structures), true lesions may also appear on only one view when they are in anatomic locations beyond the limits of the image receptor (eg, in the axillary tail or in a posterior location [Fig 9]) or breast positioning during mammographic examination is not optimized to ...
Optimisation of radiation dose and image quality for AP pelvis
... 5.2.2.3. Optimisation strategies in digital radiography (CR & DR) ................................ 106 5.2.3. Computed radiography-detector (physical overview) ............................................... 111 5.2.4. Radiographic acquisition factors (Technological and Operational) ................ ...
... 5.2.2.3. Optimisation strategies in digital radiography (CR & DR) ................................ 106 5.2.3. Computed radiography-detector (physical overview) ............................................... 111 5.2.4. Radiographic acquisition factors (Technological and Operational) ................ ...
KODAK DIRECTVIEW CR Mammography Feature User`s Guide
... mammograms. Obtaining high quality mammography images is dependent on many factors. All equipment in the Mammography Imaging Chain must be properly calibrated for use and quality control checked for proper functionality per each manufacturer's recommendations. The Technologist plays a key role in su ...
... mammograms. Obtaining high quality mammography images is dependent on many factors. All equipment in the Mammography Imaging Chain must be properly calibrated for use and quality control checked for proper functionality per each manufacturer's recommendations. The Technologist plays a key role in su ...
Toward simultaneous PET/MR breast imaging: Systematic
... spatial resolution anatomical information and excellent softtissue contrast obtained by MR imaging, has opened a wealth of diagnostic information for numerous clinical applications and may increase the diagnostic accuracy compared to single modalities.1–3 Various diagnostic imaging applications can ...
... spatial resolution anatomical information and excellent softtissue contrast obtained by MR imaging, has opened a wealth of diagnostic information for numerous clinical applications and may increase the diagnostic accuracy compared to single modalities.1–3 Various diagnostic imaging applications can ...
Transcatheter Arterial Chemoembolization for Hepatocellular
... (TACE) is widely used in the treatment of malignant liver tumors (1– 6). By interrupting the arterial supply, chemoembolization deprives the tumor of its major nutrient source, which results in ischemic tumor necrosis. Hepatocellular carcinoma (HCC) is the most common malignant tumor of the liver. A ...
... (TACE) is widely used in the treatment of malignant liver tumors (1– 6). By interrupting the arterial supply, chemoembolization deprives the tumor of its major nutrient source, which results in ischemic tumor necrosis. Hepatocellular carcinoma (HCC) is the most common malignant tumor of the liver. A ...
CCR Template - Colorado Secretary of State
... “Half-value layer (HVL)” means the thickness of specified material which attenuates the beam of radiation to an extent such that the exposure rate is reduced by one-half of its original value. In this definition, the contribution of all scattered radiation, other than any which might be present ini ...
... “Half-value layer (HVL)” means the thickness of specified material which attenuates the beam of radiation to an extent such that the exposure rate is reduced by one-half of its original value. In this definition, the contribution of all scattered radiation, other than any which might be present ini ...