Tomography College Essays Samples For Students

Introduction

There are many techniques that are being used today to examine the functionality of the human brain. Most of the current technologies emerged in early 1990s. Some of the technologies that are used for brain imaging include; computed tomography (CT), positron emission tomography (PET), Magnetic resonance imaging (MRI), event-related potentials (ERPs) and magnetoncephalography (MEG). This paper will look at the history of these techniques used for brain imaging(Katz & Alexander 1994).
1895 – 1900 Early uses of brain imaging
The process of imaging human dieses started in 1895 following the discovery of Wilhelm Roentagen. He was a physicist that ...

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Introduction

Quality control program for computed tomography (CT) scan is defined as a process or system that is designed to ensure that the performance of the scanner is still within the set standard (Seeram, 2015, p.432). This is accomplished using quality control tests. The result of a specific QC test for a given CT scanner is compared with other brands of CT scanners in the market. The purpose of quality control testing for CT scans is to ensure that every image produced by the machine is of good quality—clear, and readable, while still ensuring the lowest dose ...

This paper seeks to establish the use of technology in the investigation of cognitive processes. Cognitive processes are the mental functions of intuition, sensing, feeling and thinking. These functions divide along the lines of; processes of perception and processes of judgment. Sensory and intuitive processes help the brain in perceiving the environment and collecting information. Thinking and feeling processes apply in making appropriate decisions as may be required of the situation.
Owing to the immense value of cognitive Processes to humanity, it is important that they are apparent. The use of technology has changed the manner in which ...

Introduction

The learning of a phenomenon requires the exploration of a variety of sources of information. The human personnel can be a source of specific information on certain aspect. For instance, interviewing a professional can help gather information on certain key aspects of the profession or a subject matter related to the profession. The interest in this paper is in the guidelines for the screening of colorectal cancer as a policy issue. To complement the secondary sources of information, this paper benefits from information gathered from an interview performed on the sixth day of July, 2016.
The interviewee was Alison ...

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Corresponding Address and email)

Single-photon emission computed tomography (SPECT scintigraphy) utilizes nuclear medicine along with gamma rays to get three-dimensional images (NLM, n.d.) of an internal part of the body such as heart with an objective of diagnosing a problem.

SPECT

In SPECT, a gamma-emitting radioisotope is administered into the bloodstream of a patient with the help of injection (Boyd, 2014; Hademenos, 1998). The radioisotope is, usually, a simple soluble ion as, for example, isotope of gallium(III) (Sharma, Prior, Belinsky, Kruh, & Piwnica-Worms, 2005; Wadas, Wong, Weisman, & Anderson, 2010). Most often, a marker radioisotope is also bound to a particular ligand ...

Positron Emission Tomography (PET) is a method of medical imaging that works by detecting gamma rays produced by the interaction of electrons with positrons after a tracer radionuclide is injected into the body. The tracer radionucleotide used is dependent on the part of the body that is being investigated, in some cases it is modified glucose, in others, it is a receptor ligand. Common uses of PET scans are cardiac studies that measure the oxygenation of the tissues of the heart and the function of the heart muscle, to detect skeletal trauma and bone cancers, kidney imaging to study the renal function ...

The manifestation of cancer begins when the cells in the body multiply out of control. There are various kinds of cancer with each type starting with the out-of control rapid growth of cells. In most cases, the rapid multiplication of the abnormal cells leads to the growth of tumors. Tumors can either be benign or malignant. Benign tumors are neither cancerous nor life threatening due to the fact that they do not move to other body parts. Malignant tumors cause cancer and are capable of spreading to other body parts close to the tumor. Malignant tumors are capable of ...

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Corresponding Address and email)

Abstract
Radiology is among the rapidly advancing specialties of the medical profession. It is both a diagnostic as well as an interventional specialty having direct links to medical experts from different parts of a hospital. Diagnostic radiologists use their knowledge and expertise in the diagnosis of a disorder, whereas interventional radiologists deal with the treatment of the disorder. Radiology department deals with different patients having diseases such as cancer and heart related problems. Patients having kidney problems, liver problems, back pain, fibroids in the uterus, and blockages in the veins and arteries may also visit interventional ...

Healthy behaviors play a key role in daily life. Yet, certain unhygienic practices tend to interfere with the health and induce a risk to the overall life. These practices could be high-fat diet, alcohol, and smoking. There is a need to know much about these. In such context, the present description deals with a topic “ What will kill you first, a smoking, a high-fat diet or alcohol?”.

Health -related risk factors:

A risk factor is any quality, trademark or presentation of a person that improves the probability of building up an ailment or damage. A few illustrations of the more vital danger elements ...

Upper respiratory disease is a term that encompasses acute infections ranging from the benign common cold to life-threatening conditions (e.g., epiglottitis). Cases of upper respiratory disease are easy to recognize because the patients will complain about the following symptoms (Centers for Disease Control and Prevention [CDC], 2016):

Runny nose (always)

Sore throat (always)
Coughing (common, usually in cases of viral etiology)
Sneezing (common, usually in cases of viral etiology)
Other symptoms depend on the patient’s age, medical history, and the pathogen causing the infection, so it is important to conduct a thorough assessment which consists of the following steps:

Interview the patient.

Perform ...

A medical specialty in which imaging is used for diagnosing and treating the diseases which are seen inside the body is called radiology. A variety of imaging techniques are used by radiologists these days like magnetic resonance imaging, positron emission tomography, ultrasound, X-ray, computed tomography etc. for diagnosis and treating the diseases. The X-rays are transmitted through the patient's body which produces the radiographs. The Dental radiography is popularly known as X-rays. Radiography is used by dentist mainly for finding dental structures that are hidden, cavities, loss of bones and benign masses.

Importance of the Radiographs in the Dental Field

Various types of X-rays are used by ...

Alzheimer Disease

Nowadays the humanity suffers a wide range of different diseases. Very often from news we hear about the epidemic of that or another illness which slowly kill the mankind. One of the diseases, a modern black death for aged people, is Alzheimer disease.
Alzheimer disease may be characterized by affecting human’s brain, the section responsible for memory, thinking and language, and this way it influences the performance of the simplest daily activity of a person. It is well known that mostly aged people suffer from this illness. Those, who are over 60 years old are in risk of ...

MULTIPLE SCLEROSIS

The symptoms appearing as a result of Multiple sclerosis are believed to be a result of blockage in the conduction as a result of defects in the synaptic junctions of the nerves, the defects could be demyelination and inflammation of the nerves (Smith and MacDonald, 1999). There is focal demyelination of the nerves, where the myelin sheath is damages but the axonal continuity remains undisturbed. The difference between Wallerian degeneration and Multiple sclerosis lies in the fact that in the former one there is degeneration of the axon also. Other features that can be observed in case of multiple ...

ICE Catheterization Lab Observations

Nurses assist the physician during catheterization procedures. There specific roles are; patient care and medication, administering conscious sedation, patient procedure monitoring and most importantly providing an emergency medication. From the start to the end of operations, the nurse has to be there. Moreover, nurses should interview the patient before any operation is started. Questions about allergies, heart diseases and previous illness are part of the assessment nurses should conduct. This assessment is necessary to know the health status of the patient. It is important to do patient assessment frequently to establish the medication effectiveness.

Catheterization requires the following ...

Positron Emission Tomography (PET), in recent years, has experienced accelerated development and has become an established method for medical research and clinical routine diagnostics. The development and availability of radiopharmaceuticals specific for particular diseases is one of the major driving forces for the expansion of PET (Fani et al, 2008, pg. 1). Currently, DOTA peptides such as DOTATOC, DOTATATE and DOTA-NOC among others are being promoted for routine clinical use in nuclear medicine. The increase in the knowledge of purification and the concentration of the eluate and the complex ligand chemistry has led to the (68) Ga-labeled pharmaceuticals with a ...

Introduction

The urinary system is the filter mechanism used for flushing out toxic wastes and excess water out of the human body. Consisting of the two kidneys, the bladder, ureters and the urethra, the urinary system helps not only in discharging wastes from the body but also helps in regulating blood pressure and blood volume. The kidneys are two bean shaped organs positioned near the middle of the back on both sides of the spinal column. The kidneys produce urine by processing around 200 quarts of blood every day, and the amount of urine varies among individuals depending on the ...

2. Neurodegenerative disease resulting in mental and intellectual decline (alz.org).
3. Most common cause of dementia and progressively worsens leading to patient’s death.
4. Symptoms
a. Memory loss (alz.org).
b. Inability to solve daily tasks and problems
c.Confusion about place and time
d. Depression and social withdrawal
- Causes of AD
- i. Presence of Amyloid peptide oligomers and neurofibrillary tangles that result in damage and death of neurons.(Gravitz, 2011)
ii. Inherent Genetic predisposition. (APOE) allele 4, GSK3 and TREM2 are part of gene clusters associated with AD ( ...

Introduction

The complex mysteries of the brain have been the subject of constant debate, intrigue and controversy for many years. Over the last few decades, the mysteries on the working of the brain have started to be more clearly understood. Neuropsychology is at the forefront of making this possible through technological advancements in imaging. Neuropsychology is the study of how the brain and its complex components impact on behavior (Hartlage, Lawrence and Long 3). Neuropsychology also comprises of studying how behavior is affected by brain function. In this science, the function of the brain is evaluated through objective testing of ...

Nuclear medicine is the use of radioactive isotopes to diagnose and treat patients. It is considered a functional measurement method, as the imaging is based on cellular function and physiology, rather than structure, like an X-ray (Prvulovich & Bomanji, 1998). The kind of radiation that is measured in nuclear medicine is gamma rays. Patients are prepared for a nuclear medicine procedure by having an amount of tracer isotope administered that is just enough to obtain the sought for information before its decay. The World Nuclear Association reports that in the United States each year there are about 18 million nuclear medicine procedures ...

Introduction

Fourier analysis is a field of mathematics that studies how general functions can be approximated or represented by the addition of simple trigonometric functions. Fourier analysis is named after a man who proved that representing a mathematical function in the form of a sum of a trigonometric function simplifies the inquiry into heat propagation. Joseph Fourier envisioned the Fourier series, a concept from which Fourier analysis grew. Presently, vast spectrums of mathematics involve Fourier analysis as a subject. The subject spans through the field of engineering and sciences. In these two fields, Fourier analysis involves the process through which a function is decomposed into simpler functions. The ...

English

Bone cancer is quite a rare type of cancer. It initiates mostly in the long bones like the arm or legs. It is made up of trillions of cells which grow at different rates but do not metastasize. Bone cancer does not include blood cell cancers like myeloma and leukemia that only metastasizes (disperses to the bones).
Hippocrates, a Greek physician used words like carcinos and carcinoma to describe tumors formed due to ulcers. Cancer refers to the word crab which has finger like projection similar to those in the cancer cells.
The disease was first identified in 1761 ...