ct scan essay

test. These scans cannot detect all types of brain injuries, so it is possible to have a severe brain injury and be in a coma even though the scan results are normal. 1.7.2.1 Computerized Tomography (CT) Scan A computerized tomography (CT) scan uses x-ray beam technology to create a computerized image of the brain one section or slice at a time. CT imaging is now the standard of care for a person who has sustained a significant head injury to determine if a skull fracture has occurred. A CT image will

Cancer is the leading cause of death in the world. An astounding average of 1.6 million deaths occur due to lung cancer every year, making it the most common type of cancer worldwide (1). Lung cancer is broadly classified into two types: small cell and non-small cell lung carcinoma (NSCLC). 85% of all lung cancer cases are NSCLC. NSCLC has several different histologic subtypes, some of which are: squamous cell carcinoma, large cell carcinoma, and adenocarcinoma. Of the three, adenocarcinoma accounts

Each year the number of Computed Tomography (CT) scans have increased. “Currently, some 80 million CT scans are performed each year in the U.S., up from 3 million in 1980.”1 With the increased number of CT scans, there has been a significant increase in adverse reactions to the contrast media that is used during these scans. “Previous studies report an overall incidence of anaphylactoid reactions to nonionic iodinated contrast media of 0.2% to 3%, with severe reactions occurring in approximately

(Carlton & Adler, 2012) For this reason, it is imperative that the patient arrives on time and the injection and subsequent scan are done as scheduled. Additionally, PET can give false results if the patient has eaten within a few hours of the exam, especially if it was something high in sugar content. Another disadvantage of PET is its high cost. The machines, especially PET-CT machines, are very costly at around $1.2 million. (Lunzer Kritz, 1999) This might mean that PET is not as accessible for

Introduction Cancer is the leading cause of death in the world. An astounding average of 1.6 million deaths occur due to lung cancer every year, making it the most common type of cancer worldwide (1). Lung cancer is broadly classified into two types: small cell and non-small cell lung carcinoma (NSCLC). 85% of all lung cancer cases are NSCLC. NSCLC has several different histologic subtypes, some of which are: squamous cell carcinoma, large cell carcinoma, and adenocarcinoma. Of the three, adenocarcinoma

predict of the recurrenct NPC and was sent for CT scan of the nasopharynx and (2) patient was older than 18-year-old. The exclusion criteria included; (1) patient who refused participating the study (2) patient who had not completed two years follow-up and (3) patient had the contraindication for contrast-enhanced CT scan such as, pregnancy, allergic iodinated contrast medium or renal impairment (GFR < 30 mL/min).

This revolution allowed to developed several radiograph equipment, such as computed tomography. Computed Tomography is also known as CT, the word tomos means a cut, slice or a section. CT is a scan that uses x-rays to produce detailed images inside the body. CT machines go around

Lung cancer is the leading cause of cancer-related mortalities in the world. An astounding average of 1.6 million deaths occur due to lung cancer yearly (1). Lung cancer is classified into two types: small cell and non-small cell lung carcinoma (NSCLC), where 85% of lung cancer cases are NSCLC. NSCLC has several different histologic subtypes, some of which are: squamous cell carcinoma, large cell carcinoma, and adenocarcinoma. Of the three, adenocarcinoma accounts for more than 50% of NSCLCs, making

iSAP – CT Dose Calculation Introduction: The role of computed tomography (CT) in imaging has risen substantially in the previous decade (Hess et al. 2014). With its increasing demand, one of the most predominant concerns for radiation workers is the dose administered to the patient (Hess et al. 2014). Therefore, the calculation of dose is a parameter that must be monitored closely. Task 1: Exposure Exposure is the amount of electrical charge produced by ionising radiation per unit mass of

which study the treatment of seizures, study the median age for a seizure was around 24.8 years, in Muralidhar’s the age was 33.4 years. The abnormal CT scans were compared to a study conducted by Wallace JC, which studied brain scanning of late-onset seizures, Wallace found that out of one hundred thirty-two patients, fifty-one had abnormal CT scans. Muralidhar’s study concluded that out of fifty cases, seventeen were abnormal. Four cases showed abnormities on the EEG test, which is eight percent