Brief Description Of A Study Design

In our study: statistically, the extent of agreement between dynamic contrast MRI and histopathological staging was almost perfect (κ =0.880) and highly significant (P = 0.001), which is higher compared to the study done by Gupta N. and his colleagues on 60 patients, that resulted in good agreement equals (κ =0.690) and

When it comes to medical imaging, there are several different options to choose from for different testing. There are similarities and differences; pros and cons to each. This paper will discuss MRI, CT, and ultrasound. They each have important things to know regarding radiation dose, cost, and reasons to use one over another.

Patients & Methods: This study was conducted on 11 patients during the period from January 2012 to May 2014 at our radiology department in Ain Shams University Hospitals. The study was approved by Ethical Committee of Scientific Research of Ain Shams University.

The histopathology considered the main important diagnostic tool for Glioma grading and classification; however it has some restriction due to the heterogeneity nature of the tumor and the limitation to obtain the entire tumor.

The PET scanning is particularly useful in detecting cancer because most cancer cells use more glucose than normal tissues. In lung cancer, pet scans are sometimes used to observe for cancer in particular areas such as the lymph nodes, in the chest or to demonstrate the spreading activity of cancer cells to other areas the body. This would help the doctor to take a further decision about the treatment of a

The last comparison between the two systems is what helps the radiologist improve a difficult diagnosis. Specifying whether a tumor is malignant or benign can be difficult in some cases. Therefore, the CS and DC point out distinctive characteristics of a malignant or benign tumor. A study was shown to prove that the CS and DC systems most often can differentiate tumors at the same rate. Multiple difficult images were passed through each system to see if their evaluations were

• MRI (magnetic resonance imaging) is a diagnostic test that uses large magnets, radio frequencies, and a computer to make images of organs and structures within the body. This test outlines the extent of the tumor within the bone and joint and the relationship of the tumor to the muscles, nerves and blood vessels.

In radiation therapy planning, a CT scan is needed fordose distribution calculations while the contours of the target lesion are often best outlined on MRI [3,4]. In nuclear medicine, determination of the anatomical location of dysfunctional areas and studies in functional- structural relationships are facilitated by integration of functional and morphological information, and anatomical information may be used to improve PET or SPECT reconstructions. Since information gained from two images acquired in the clinical track of events is usually of a complementary nature, proper integration of useful data obtained from the separate images is often desired. The first step in the integration process is to bring the modalities involved into spatial alignment, a procedure referred to as registration/matching as shown in Figure 1.

The study design comprises of both qualitative and quantitative approaches for exploring the current practices of cleaning the resuscitation device among the providers in union level settings (Family Welfare Visitor) and in communities (Community Skilled Birth Attendant) to find out if that practice adequately meets the requirements of standard infection prevention guideline and its associated gaps and challenges. The study involves a direct observation of simulation of the preparatory activities prior to conduction of deliveries and cleaning and disinfection process for the neonatal resuscitation device, pre and post cleaning collection of specimens from parts of the device (bag-mask and sucker) and lab-test of specimens.

Its arrival to health care in the 70s has completely modernized diagnostic radiology and its uses continue to improve to this day. It is estimated that more than 62 million CT scans per year are currently obtained in the United States, including at least 4 million for children (1). These drastic numbers have been largely driven by advances in CT technology that make it more user-friendly for all parties

The final diagnosis was acquired from both techniques were compared with other techniques (such as x-rays and MRI), with clinical follow up of patients, and with th e histological data of the

PET scanners today are available with integrated high-end multi-detector row CT scanners. When these two scans are done during the same session, the patient doesn’t have to more or change positions and the two sets of images give a clearer picture. The areas of abnormalities are found on the PET scan can be more precisely correlated with the anatomy on the CT scan.(8)

18FDG-PET/CT should be used for response assessment in FDG-avid histologies, using a 5-point scale; CT is preferred for low or variable FDG avidity.

Positron emission tomography (PET) is a type of nuclear medicine imaging which uses radiotracers or also called as radiopharmaceuticals − minute amount of radioactive substances-labelled bio-compounds. This test shows the function of tissues and organs such as sugar metabolism, oxygen use and blood flow instead of mere structural images of, for instance blood flow to and from organs illustrated by magnetic resonance imaging (MRI) and computed tomography (CT). This feature makes it a useful diagnostic tool to help physicians detect and evaluate severity of various diseases or medical conditions including cancers (staging). PET may identify the early onset of diseases before it undergoes anatomical changes which make it apparent on other imaging

There are different methods for assessment of radiotracer uptake by normal and pathologic tissues, such as visual inspection, the standardized uptake value (SUV) and the glucose metabolic rate. Visual inspection in analysis of PET-CT results is used by comparing PET and CT data, as well as viewing fused PET-CT images. SUVs are used for semi-quantification of FDG uptake. Another method of quantification of dynamic PET results is the more complex glucose metabolic rate calculation (Kapoor et al, 2004).