Compare and contrast between plain and computed radiography.

Computed Radiography (CR) Digital Radiography using storage phosphor plates as an intermediate storage media prior to scanning the plate to create a digital image. Implementation is similar to film radiography except that in place of a film to create the image, an imaging plate (IP) made of photostimulable phosphor is used Plain radiography is both a primary abdominal examination technique and an initial component of subsequent excretion and contrast radiographic studies. Excretion radiography is performed by means of antegrade opacification of the renal collecting systems, ureters, and bladder following intravenous contrast administration. Contrast radiography is obtained following direct injection of contrast. Chandra M. Burman PhD, in Leibel and Phillips Textbook of Radiation Oncology (Third Edition), 2010. Computed Radiography Systems. Computed radiography (CR) systems are very similar to film-based systems, but instead of film, a photostimulable phosphor plate is used. These flexible plates are 1 mm thick and are coated with europium activated fluorohalide compounds in crystalline formation.

What is Computed Radiography (CR) ? Computed Radiography — or CR for short — is the use of a Phosphor Imaging Plate to create a digital image. CR uses a cassette based system like analog film and is more commonly considered to be a bridge between classical radiography and the increasingly popular fully digital methods Radiographic contrast is the density difference between neighboring regions on a plain radiograph. High radiographic contrast is observed in radiographs where density differences are notably distinguished (black to white). Low radiographic contrast is seen on radiographic images where adjacent regions have a low-density difference (black to grey) CT has better spatial resolution than MRI and is more sensitive at identifying calcium, but it has much lower contrast resolution compared with MRI, making its differentiation of structures poor in some parts of the body. These differences determine the value of attempting a CT as an alternative to MRI

Secondly, X-ray machines sometimes fail in diagnosing soft tissues, muscles damage and other body organs, which is possible through Computed Tomography procedure commonly known as CT scan. Images produced by X-ray are in 2D, whereas 3D images are formed in CT scan Computed radiography uses analog imaging mechanisms to take X-ray exposures with computed radiography cassettes that have to be inserted and removed to acquire x-ray images. These are then transferred onto a screen output to present the medical imaging as required by a physician. This makes the imaging process tedious and time consuming 10. Comparing Dose Requirements: Speed. 0 1 2 3 4 0.1 1.0 10.0 100.0 1000.0 µGy. X-ray Sensitometry - Screen/Film and CR (Density or CR Signal vs. X-ray Exposure Advantages of computed radiography compared with conventional film/screen combinations include improved contrast resolution and postprocessing capabilities. Computed radiography's spatial resolution is inferior to conventional radiography; however, this limitation is considered clinically insignificant

Both computed radiography (CR) and digital radiography (DR) require the use of digital technologies which rely on computer networks and high-bandwidth web facilities In a study of 103 patients with suspected SBO, the sensitivity of plain radiography was reported to be 75%, with a specificity of 53%, whereas computed tomography (CT) scanning had a 92%. The purpose of this work is to compare computed radiography ~Kodak CR 400! and film/screen combination~Speed 400! systems in regards of patient dose, technique settings, and contrast-detail detectability. A special contrast-detail phantom with drilled holes of varying diameter ~detail! and varying depth ~contrast! was utilized Objective—To compare accuracy of estimates of cystolith size obtained by means of plain radiography, double-contrast cystography, ultrasonography, and computed tomography.. Sample Population—30 canine cystoliths ranging from 1 to 11 mm in diameter with various mineral compositions.. Procedures—A bladder phantom model was created by filling a rubber balloon with saline (1% NaCl) solution.

With this in mind, here's a full comparison of the differences with digital radiography vs. computed radiography, and why digital is becoming the standard so quickly. The easiest way to explain how computed radiography works is that the central component is a phosphor imaging plate. This is combined with a cassette-based system to create the. Computed radiography may cost more upfront than traditional x-ray machines. However, computed radiography is typically much more affordable over time. In addition to using a plate hundreds or thousands of times, compared to the single use of x ray film, you can also save on other related supplies

Computed radiography (CR) Reading the image As the laser penetrates the PSP, it spreads. The amount of spread increases with PSP thickness Phosphor layers of the plates range from 100 to 250 micrometers in thickness A direct relationship exists between the subject contrast and acquired data contrast Computed tomography (CT) has become more widely available and computed radiography (CR) has replaced film-screen radiography for canine thoracic imaging in many veterinary practices. There are limited data comparing these modalities in a veterinary clinical setting to detect pulmonary nodules. We co Real-time Radiography Computed Tomography XRSIM. References. Quizzes-Radiographic Contrast. As mentioned on the previous page, radiographic contrast describes the differences in photographic density in a radiograph. The contrast between different parts of the image is what forms the image and the greater the contrast, the more visible features. Computed Tomography Versus Plain Radiography to Screen for Cervical Spine Injury: A Meta-Analysis James Frederick Holmes, MD, MPH, and Radha Akkinepalli Background: To compare the test performance of plain radiography and computed tomography (CT) in the detec-tion of patients with cervical spine injuries following blunt traumatic events amon Radiographic contrast can be defined in a number of different ways but the simplest is the best. Contrast is what allows us to see recorded details. It is essentially the different shades of density in a radiograph. The classic definition can be explained with the equation Radiographic contrast is equal to the product of the Subject time

  1. Objective: The purpose of this study was to compare the sensitivity for detecting foreign bodies among conventional plain radiography, CT and ultrasonography in in vitro models.. Methods: Seven different materials were selected as foreign bodies with dimensions of approximately 1×1×0.1 cm.These materials were metal, glass, wood, stone, acrylic, graphite and Bakelite
  2. Comparative evaluation of modified canal staining and clearing technique, cone-beam computed tomography, peripheral quantitative computed tomography, spiral computed tomography, and plain and contrast medium-enhanced digital radiography in studying root canal morphology. Neelakantan P(1), Subbarao C, Subbarao CV
  3. In the world of radiology, many wonder about the pros and cons of CR (computed radiography) versus DR (digital radiography.) It is well-known at this point that analog is on its way out, with digital replacing everything that used to be done via film. And yet, there are still some major pros to using CR over DR, even in this day and age
  4. istration is most common, they are also ad
  5. We prospectively evaluated the degree of absolute agreement between measurements of lateral center-edge angle (LCEA) on plain radiography (XR) and computed tomography (CT) in a consecutive cohort of 205 patients (410 hips) undergoing hip arthroscopy

Radiography is an imaging technique using X-rays, gamma rays, or similar ionizing radiation and non-ionizing radiation to view the internal form of an object.Applications of radiography include medical radiography (diagnostic and therapeutic) and industrial radiography.Similar techniques are used in airport security (where body scanners generally use backscatter X-ray) Furthermore, more details are visible and analyzable with computed radiography due to a higher dynamic range when compared to film. Other advantages over film include a more simplified workflow, a safer working environment for operators and a more environmentally-friendly chemical-free process with computed radiography (dashed line). There is no statistical difference between the two curves. The area under the curve for the computed radiography was .856 and for the conventional film-screen images it was .864. The difference between the two, using Metz's [13] methods for comparing two receiver operating curves was not signifi CT scan or computed tomography is a medical technique used to sacn the parts of the body with the help of computer-processed combinations of many x-rays which are recorded from different angles. Here in this article know the complete difference between contrast and non-contrast CT scan Radiography is the imaging of body structures, or parts of the body, using X-rays. X-rays are a form of radiation (X-radiation) similar to visible light, radio waves and microwaves. X-radiation is special because it has a very high energy level that allows the X-ray beam to penetrate through the body and create an image or picture

Plain radiography, excretion radiography, and contrast

  1. Abstract Many veterinary practices have recently switched from using film-screen (plain film) radiography to computed radiography (CR). Due to the number of inherent differences between the two.
  2. raphy (FSR), discuss computed radiogra-phy (CR) in depth,introduce direct digital radiography (DDR), and contrast and compare the different systems.CR systems were introduced to the medical market in 1981.Although CR equipment acquisition cost has been relatively steady, more eco-nomically feasible systems are now avail-able through veterinary.
  3. tems, computed radiography (CR) was initially must choose between good contrast and good latitude with traditional radiography1,2 (Figure 1). Another disadvantage with traditional radi- ent film or photo-quality or plain paper. Because of the high exposure latitude, an unprocessed digital image.
  4. The effective atomic numbers of bone and tissue are roughly 12.3 and 6.5, respectively, and the cubic dependence can give great contrast between these materials. The contrast can therefore be re-expressed as: C = (μ b - μ a) x b. where μ a and μ b are the linear attenuation coefficients of the tissue and bone, respectively and x b is the.

Niranjan Ultrasound India pvt.Ltd DIGITAL PROJECTION RADIOGRAPHY COMPUTED RADIOGRAPHY (CR) DIGITAL RADIOGRAPHY (DR) 3. COMPUTED RADIOGRAPHY (CR) • Been around since 1980-81 • Uses same radiographic equipment • Uses an imaging plate • Need a cassette reader • Very similar to conventional radiographic cassette Compare and contrast the differences between radiographs and photographs. Below are a series of photographs and a radiograph of the same objects.----- There are several characteristics of the photographs and x-ray photographs that are similar, and yet, there are very distinct differences. In radiography, the process to produce an image is. Conventional radiography involves the use of x-rays; the term plain x-rays is sometimes used to distinguish x-rays used alone from x-rays combined with other techniques (eg, CT). For conventional radiography, an x-ray beam is generated and passed through a patient to a piece of film or a radiation detector, producing an image International Journal of Innovative Research in Advanced Engineering (IJIRAE) ISSN: 2349-2163 Issue 07, Volume 5 (July 2018) www.ijirae.com COMPARISON OF COMPUTED RADIOGRAPHY(CR) AND DIGITAL RADIOGRAPHY(DR) IMAGE QUALITY TOWARD LOW-CONTRAST AND HIGH-CONTRAST OBJECT D. A. Andhika Science and Mathematics Faculty, Diponegoro University,Indonesia andhika.d.anggara@gmail.com E. W. Catur Science and. In radiography, especially mammography, the objective is to select an x-ray beam spectrum that provides the optimum balance between contrast and dose. Both of these factors depend on photon energy as illustrated below

Computed Radiography - an overview ScienceDirect Topic

  1. To compare the diagnostic quality of images obtained with a computed radiography (CR) system based on storage phosphor technology with that obtained with conventional screen-film systems, a dual‐image recording technique was devised. With this technique, a CR imaging plate is placed behind a screen-film system in a conventional cassette
  2. Computed Radiography. The latent image in CR is held on a phosphor plate. A cassette, similar to the cassette used in conventional radiography, encases a phosphor plate rather than film. When x-rays strike the phosphor plate, electrons are trapped in a high energy state. The latent image is stored in the grains of the phosphor in the plate
  3. Computed radiography's spatial resolution is inferior to conventional radiography; however, this limitation is considered clinically insignificant. What is conventional imaging? Conventional (also called analog, plain-film or projectional) radiography is a fundamental diagnostic imaging tool in the detection and diagnosis of diseases
  4. al computed tomography (LDCT) with plain abdo
  5. g contrast-enhanced thoracic multi-detector MDCT exa
  6. The computed tomography scan came as an advancement to the x rays. Both used invisible ranges of the electromagnetic spectrum and this made leaps and bounds in diagnostic medicine. The comparison of these two will be based on the physics involved, level of use, clinical relevance and associated complications
  7. g contrast-enhanced thoracic multi-detector MDCT exa

OBJECTIVE: To evaluate the severity and extent of lung disease using thoracic computed radiography (CR) compared to contrast-enhanced multi-detector computed tomography (MDCT) of the thorax in calves with naturally occurring respiratory disease and to evaluate the feasibility and safety of performing contrast-enhanced thoracic multi-detector. Naturally-occurring background radiation. We are exposed to natural sources of radiation all the time. According to recent estimates, the average person in the U.S. receives an effective dose of about 3 mSv per year from natural radiation, which includes cosmic radiation from outer space. These natural background doses vary according to where you live Soydan H et al, 2012: Postshockwave Lithotripsy Outcome Evaluation in Ureteral Stones: Comparison Between Noncontrast Computed Tomography and Plain Abdominal Radiography SWL Blog - The shock wave lithotripsy literature databas Prasanna Neelakantan, Chandana Subbarao, Chandragiri V. Subbarao, Comparative Evaluation of Modified Canal Staining and Clearing Technique, Cone-Beam Computed Tomography, Peripheral Quantitative Computed Tomography, Spiral Computed Tomography, and Plain and Contrast Medium-enhanced Digital Radiography in Studying Root Canal Morphology.

Radiology vs Radiography. Difference between radiology and radiography is something that confuses many people. However, if you look at the words, they give you a clue. 'Ology' means study of, whereas 'graphy' simply means to take images clear contrast between bone and soft tis-sue which is ideal for determining joint and erosion margins (14). CT has mul-tiplanar capabilities, and multidetector technology is superior to MRI and plain radiography in the detection of ero-sions (13, 15). High-resolution periph-eral quantitative computed tomography (HR-pQCT; XtremeCT, Scanco Medi Precise indications for computed tomography (CT) in proximal humeral fractures are not established. The purpose of this study was a comparison of conventional radiographic views with different CT reconstructions with 2 D and 3 D imaging to establish indications for additional CT diagnostics depending on the fractured parts. In a prospective diagnostic study in two level 1 trauma centers, 44. PURPOSE To provide further information about the presentation of thoracic involvement in Hodgkin disease and non-Hodgkin lymphoma and to compare chest radiography with chest CT findings. MATERIALS AND METHODS We reviewed the chest radiographs and the CT images of 100 Hodgkin and 100 non-Hodgkin patients, all of them untreated. Our data were compared with those of literature series: the latest.

Computed Radiography (CR) vs

Radiographic contrast Radiology Reference Article

Introduction. Chest radiography is the most frequently performed examination in diagnostic radiology.1, 2 Applications of portable (bedside) chest radiography span from screening healthy patients to evaluating critical abnormalities and position of tubes and lines in the most critically ill patients in the intensive care unit (ICU) setting. In the ICU setting, it is especially important to. Plain and Contrast Radiography. Chest radiography. The chest x-ray (CXR) is the initial radiographic study of choice in patients with thoracic blunt trauma. Moghadam PZ, Bahreini M. Value of point-of-care ultrasonography compared with computed tomography scan in detecting potential life-threatening conditions in blunt chest trauma patients. A linear regression model was created to analyze the relationship between PT and VA. CL radiography and computed tomography (CT) were performed for the enrolled patients after surgery. The consistency between CL and CT measurements were verified by intra-class correlation coefficient (ICC). There was a high correlation between the VA and PT

Radiologic parameters are important factors for planning the treatment for thoracolumbar fracture. However, we noted that measurements of the degree of kyphosis by lateral decubitus plain radiography were greater than supine CT. The cause of this discrepancy is unclear. We retrospectively reviewed the plain radiographs and CT scans of 90 patients with thoracolumbar fractures (fracture group) A new proposal on General Principles for Examination of Metallic Materials by Computed Radiography has been developed in a committee of the German Society for NDT. Again, the concept of the standard is the definition of minimum requirements to ensure a certain spatial resolution and contrast which should be similar to the requirements of the.

Describe the features of a contrast-detail curve, and interpret a modulation transfer function curve. Discuss how post-processing allows the visualization of a wide dynamic range. Explain the relevant features of a storage phosphor imaging plate and operating characteristics of a computed radiography reader By contrast, stones ≥8 mm in diameter rarely pass spontaneously. Urological intervention is necessary in up to half of ureteric calculi >5 mm in diameter [ 20 ]. It was reported that the mean diameter of a calculus determined by US is significantly larger than that obtained by plain radiography [ 21 ] Computed tomography (CT) allows excellent visualisation of tophi in patients with gout.7 - 10 We have recently demonstrated that CT is able to assess subcutaneous tophus volume in a reliable and reproducible manner.11 Furthermore, CT has superior capability over both plain radiography and magnetic resonance imaging to detect bone erosion in. There was no significant difference between conventional radiography, AMBER, and CR in the number of detected nodules. Key Words: Lung, Chest X-plain, Computed radiography, Advanced multiple beam equalization radiography, Pulmonary nodule, Phantoms INTRODUCTION Pulmonary nodule is one of the most common radiologic findings, occurring in about 1. To compare the contrast detail resolution of all imaging systems, the contrast detail curves are plotted in the same coordinate system and given in Figures 8 and 9, which are for chest and knee protocols respectively. The more the curve is located at the lower left side of the coordinate system the better contrast resolution has the imaging system

Cancer detection rates were also higher for direct digital mammography (0.71% vs 0.66% for film-screen mammography and 0.55% for computed radiography). The contrast between detection rates was stronger for ductal carcinoma in situ. Breast density was the main factor explaining the differences in detection rates Positioning can help minimize pulmonary atelectasis. Seven R. aegyptiacus received computed tomography imaging in suspended vertical (head-up) and inverted (head-down) positions that generated images in the dorsoventral plane. Vertically positioned bats had a significantly greater lung volume compared to inverted positioning (P = 0.0053)

Imaging Modalities and Contrast Agents Radiology Ke

  1. gs of CT in combination with contrast enhanced CT in these regions. The use and advantages of computed tomography in equine medicine
  2. ations tend to be in a more narrow range but have relatively high average effective doses (approximately 2-20 mSv), and average effective doses for interventional procedures usually range from 5-70 mSv. Average effective dose for most nuclear medicine procedures varies between 0.3 and 20 mSv
  3. beam computed tomography and intraoral radiography. Inter-national Endodontic Journal, 42, 507-515, 2009. Aim To compare the diagnostic accuracy of intraoral digital periapical radiography with that of cone beam computed tomography (CBCT) for the detection of artificial periapical bone defects in dry human jaws
  4. With computed radiography, the same imaging plate could theoretically qualify for all four classes due to the wider dynamic range of computed radiography vs. that of a normal film or screen system. Silver bromide crystals are utilized in the matrix of film, where the latent image is acquired based on the relative exposure to radiation
  5. g the preferred choice

Difference Between X-ray and CT scan (with Comparison

Conventional Film Radiography is a slow, expensive and hazardous method, particularly for mass production. Eventhough Real Time Radioscopy (RTR) with Image Intensifiers is an alternative to film radiography, conventional RTR systems are compared unfavorably with film radiography in two aspects viz.low contrast Traditional film-screen radiography (FSR) has been useful in the recognition and evaluation of interstitial lung diseases, but is becoming increasingly obsolete. To evaluate the applicability of storage phosphor digital computed radiography (CR) images in the recognition of small lung opacities, we compared image quality and the profusion of small opacities between FSR and CR radiographs

Background and Purpose: To compare urinary stone size as measured by abdominal plain radiography (AXR) with stone size as measured by noncontrast three-dimensional spiral CT in patients with acute renal colic. Patients and Methods: Patients presenting to the emergency room of a single institution with urinary stones that were visible on both AXR and noncontrast spiral CT were identified Conventional radiography with film (CRF) has been in use for diagnostic purposes for a long time now. It has proved to be a great assert for the radiographers in assessing various abnormalities. With recent advances in technology it is now possible to have digital solutions for radiography problems at a very cost effective, environment friendly and also with better image quality in certain. Note that the development of such large TFT arrays has also led to the subsequent development of DR image receptors.. The size of the monitor screens used in digital radiography is generally sufficient for 35 cm x 43 cm radiographs to be displayed at a resolution of 2,048x2,560 pixels (i.e. 5 megapixels) in portrait mode, for instance, although 3 megapixel displays are also in use Conventional (also called analog, plain-film or projectional) radiography is a fundamental diagnostic imaging tool in the detection and diagnosis of diseases. X-rays reveal differences in tissue structures using attenuation or absorption of x-ray photons by materials with high density (like calcium-rich bones). Basically, a projection or conventional radiograph shows differences between bones.

Summary. Radiography is an imaging technique that employs x-rays (high-energy electromagnetic radiation of a wavelength between UV light and gamma rays) to visualize internal structures of the body for diagnostic purposes. Conventional (projectional) radiography produces two-dimensional images of the object studied. It involves an x-ray generator projecting an x-ray beam towards an object

Digital Radiography (DR) Vs Computed Radiography (CR): The

in digital fluoroscopy and computed radiography, the energy must be changed to digital format by a an algorithm is a. Mathematical formula used to reconstruct the image in digital imaging. compared with conventional radiography, computed radiography exhibits. a wider exposure latitude radiographic contrast in computed radiography may be. The anatomical complexity of the horse's head limits the abilities of radiography. Computed tomography (CT) in combination with contrast enhanced CT is used more often for diagnosing various head pathology in horses. The objective of this study was to compare intravenous and intra-arterial contrast-enhancement techniques and describe normal and abnormal contrast enhancement in the horse's. compare and contrast these modalities across the spectrum of this disease and DECT compared to conventional radiography Conventional radiography (CR) is an inexpensive and widely-used imaging agnosis by plain radiography were the hands, wrists and elbows 70 sentence examples: 1. The plain chest radiography was abnormal in 30. 2. Name of Examination: Plain chest radiography. Technique : Postero - anterior projection. 3. Results Bone image removes soft tissue image , compared to general image, scapul was done. Plain film radiography was done with film transversely and longitude nally in congruity with proje c-tion envisioned. Views acquired were 1 ) Occipital -me ntal 45 PA ; 2 ) Lateral view ; 3 ) Occipitofrontal . All patients of facial trauma were subjected to X -rays and computed tomography . 3. Results Forty cases were studied

Comparison of Computed Radiography and Conventional

Radiography is a diagnostic procedure that uses X-rays to produce pictures of internal body structures. It is used to detect disease, foreign objects and structural damage or abnormalities. Position and projection are two common radiology terms Kodak computed radiography. Computed Radiography (CR) is a digital imaging system that has been introduced into radiotherapy for megavoltage portal imaging . CR is based on the principle of Photostimulable Luminescence (PSL). The active layer of a CR plate is a coating of BaSrFBr doped with Eu in a +2 ionic state Difference Between CT Scan (Computed Tomography) and MRI (Magnetic Resonance Imaging) September 7, 2017 by Rachna C Leave a Comment CT Scan uses harmful x-rays ( the form of electromagnetic radiation like light) for imaging, while MRI does not use any radiation and is based on the effect of the magnetic field, radio waves for the imaging of the.

Digital Radiography versus Computed Radiography

  1. Risks/Benefits. Radiography is a type of x-ray procedure, and it carries the same types of risks as other x-ray procedures. The radiation dose the patient receives varies depending on the.
  3. The development of computed radiography over the past two decades has transformed radiological imaging. The radiology departments in the 21st century will look very different from those in the preceding period. In this review, the development of digital radiography is presented with a description of its various forms and a comparison with screen film radiography.

How does the sensitivity and specificity of plain

Computed tomography (CT) and cone-beam computed tomography (CBCT) are only indicated when conventional radiography cannot provide enough information for treatment planning and to remove superimposed structures.15 In the literature, CT is considered to be the gold standard for the detection of foreign bodies due to its multi-planar scans, high. Ureteral calculi imaging: a literature review comparing plain film studies, contrast media studies, ultrasound and computed tomography 2 October 2013 | Radiographer, Vol. 56, No. 3 The role of imaging in the management of urolithiasi

Comparison of computed radiography and film/screen

@article{Creanga2015AccuracyOD, title={Accuracy of digital periapical radiography and cone-beam computed tomography in detecting external root resorption}, author={Adriana G Creanga and H. Geha and V. Sankar and F. B. Teixeira and C. McMahan and M. Noujeim}, journal={Imaging Science in Dentistry. The whole- body radiation dose is 3.9 times reduced as compared with that of digital subtraction angiography, 110 and the contrast requirements are less. The drawbacks of MDCTA include limited function of the MIP software in distal anterior tibial and peroneal vessels, and inadequate imaging of the vessels in the presence of dense mural. X-Ray Fluoro: Radiography and Fluoroscopy: During a radiographic procedure, an x-ray beam is passed through the body. A portion of the x-rays are absorbed or scattered by the internal structure and the remaining x-ray pattern is transmitted to a detector so that an image may be recorded for later evaluation - UCLA Dept of Radiolog CONFERENCE PROCEEDINGS Papers Presentations Journals. Advanced Photonics Journal of Applied Remote Sensin computed tomography (MDCT), though typically minor blunt traumas are examined by RS [1-4]. Diagnostic accuracy of radiography in evaluating thorax injury is considered to be low compared with computed tomography (CT), but detailed literature data exists only for severe trauma without special focus on rib fractures or dedicated rib series [5-7]

In vitro comparison of plain radiography, double-contrast

The bottom line is that CCD technology is becoming antiquated when compared with newer indirect and direct digital flat panel radiography systems. CR With Computed Radiography (CR) systems, x-rays are incident on a layer of material with photo-stimulable storage phosphors, which converts them into stored electrons Radiographic descriptions of gout have noted the tendency to hypertrophic bone changes. The aim of this study was to characterize the features of new bone formation (NBF) in gout, and to determine the relationship between NBF and other radiographic features of disease, particularly erosion and tophus. Paired plain radiographs (XR) and computed tomography (CT) scans of 798 individual hand and. The specificity of plain film radiography and CT were 81.8% and 61.5%, respectively. The positive predictive value of plain film radiography was 85.7% compared to 84.8% for CT. The negative predictive value of plain film radiography was 39% compared to 100% for CT. The overall accuracy of plain film radiography was 56.8% and of CT was 87.8%

To evaluate the severity and extent of lung disease using thoracic computed radiography (CR) compared to contrast-enhanced multi-detector computed tomography (MDCT) of the thorax in calves with naturally occurring respiratory disease and to evaluate the feasibility and safety of performing contrast-enhanced thoracic multi-detector MDCT examinations in sedated calves Now when you compare it, you can see that this image1 is clearly brighter then the image 2. Even it is brighter then the old image1. At this point the matrix of the image1 contains 100 at each index as first add 5, then 50, then 45. So 5 + 50 + 45 = 100. Contrast The aim of this work was to examine the relationship between joint damage and MSU crystal deposition in patients with tophaceous gout. Methods: Plain radiographs and dual energy computed tomography (DECT) scans of the feet were prospectively obtained from 92 patients with tophaceous gout PURPOSE: To determine the sensitivity of computed tomography (CT) scout view in detecting ureteral stones and whether CT scout radiography can replace plain film in the evaluation of patients with acute urinary tract colic. MATERIAL AND METHODS: Between January 2000 and 2002, 110 patients with ureterolithiasis were prospectively evaluated for the detection of ureteral stones on CT scout.

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