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Chapter 25- Computed Tomography Questions with Accurate Answers
when and who first had a successful demonstration of a CT correct answer 1970 by Godfrey Hounsfield and Allan Cormack what were the first units dedicated for correct answer head scans what is CT correct answer the process of creating cross-sectional tomographic plan of any part around the body how is each image demonstrated correct answer cross-sectional format ray correct answer x-ray beam path through the subject corresponding to each measurement view correct answer set of measu...
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CT Procedures Unit 1 Questions with Accurate Answers
Define computed tomography and the individual whom was awarded the Nobel Prize for the invention correct answer Imaging modality that can produce a cross sectional tomographic plane of any part of the body- Cormick and Hounsfield Define Hounsfield Scale also identify the number used to identify the following elements: Water Bone & Air correct answer Measure of beam attenuation capability of a specific structure. Water: 0 Bone: 1000 Air: -1000 Define the following computer tomography t...
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Computed Tomography (CT) Questions with Accurate Answers
A 20-cm water bath should be imaged weekly; the average value for water should be within ± 10 HU of... correct answer zero. A CT image is a transaxial or transverse image that is perpendicular to the long axis of the... correct answer body. A CT number of − 1000 corresponds to air, and a CT number of + 3000 corresponds to dense... correct answer bone. A CT number of zero indicates... correct answer water. A dedicated quality control (QC) program is essential for each CT imaging......
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Computed Tomography Final Exam - MEDRADSC 3K03 Questions with Accurate Answers
180 Degree Algorithm correct answer Uses half rotation for sharper image quality. 360 Degree Algorithm correct answer Utilizes full rotation, broader image representation. 3D Rendering correct answer Generates three-dimensional representations from image data. 3rd Generation Standards correct answer Most commonly used; multislice CT technology. 3rd Generation Standards correct answer Most commonly used; multislice CT technology. 4DCT correct answer CT scan with breathing tracking ...
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Computed Tomography Ch 1-4 Quiz with Accurate Answers
______ is responsible for high speed processing of the input digital data. correct answer Internal image processor ______ refers to using one or more software and or hardware techniques to reduce information by removing unnecessary data. correct answer Digital compression A 10x10 matrix consists of _________ pixels correct answer 100 A beam tracing a spiral path around the patient is known as correct answer Helical CT A computer system consists of correct answer hardware, software, a...
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Computed Tomography Exam 2 (Chapters 7, 8, 9, 10) Questions with Accurate Answers
all of the following are major categories of artifacts except: a. streaks b. shading c. rings and bands d. noise correct answer d. noise all of the following can be described as image quality parameters except: a. high contrast spatial resolution b. low contrast spatial resolution c. noise d. reconstruction parameters correct answer d. reconstruction parameters all of the following can cause shading artifacts except: a. beam hardening b. off-focal radiation c. improper sam...
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Computed Tomography For Technologists Questions With Accurate Answers
_________ includes all data measurements obtained from the detector array correct answer Raw data __________ record the number of X-ray photons that pass through the patient correct answer Detectors _____________ quantify the degrees that a structure attenuates an X-ray beam correct answer Houndsfield units ______________ accept processed data from the computer correct answer Output devices ______________ are best used for imaging tissues types that vary greatly correct answer Wide w...
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CT Principles Questions with Accurate Answers
_____ information is used to assess the three elements of technique of the 3D imaging procedure. correct answer quantitative 1 Sievert is equal to? correct answer 100 rems 3D imaging has found applications in all of the following except? correct answer ultrasound guided bx A 10x10 matrix consists of _____ pixels. correct answer 100 A CT image of 12 bits per pixel means? correct answer each pixel can have a total of 4096 shades of gray A digital image ? correct answer is a numerica...
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Computer Tomography Module #2 Study Guide Questions With Accurate Answers
A 10x10 matrix consists of ....... pixels. correct answer 100 A digital image is a discrete function. correct answer true A digital image: correct answer is a numerical representation of an object A radiograph is an example of an analog image. correct answer true A single ray in computed tomography (CT) is: correct answer a single straight line path of an x-ray beam. A view in CT is correct answer a collection of rays for one translation across the object. A view in CT is: corr...
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CT Board Review Questions with Accurate Answers
correct answer The rate at which a quantity of x-radiation emitted from a CT tube passes through a unit area over a unit of time is called the: +1000 HU correct answer An average CT number value for bone is: 0 - +20 Hounsfield units correct answer Simple cysts of the kidney have an average attenuation value in the range of what? 0.5 MB correct answer A standard CT image reconstructed on a 512^2 matrix has a digital size of approximately: 0.5-1.5 mg/dL correct answer Average creatine ...
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Multislice Computed Tomography Questions with Accurate Answers
180-Degree LI Algorithm correct answer Calculates a second spiral from the measured spiral/helical data offset by 180 degrees Improves slice sensitivity profile (SSP) enhancing image quality 320-Slice Dynamic Volume CT/Clinical applications correct answer Brain CT perfusion studies CT angiography Cardiopulmonary imaging Pediatric imaging 360-Degree LI Algorithm correct answer Planar slice is interpolated by use of data points measured 360 degrees apart Algorithm broadens the slice sensitiv...
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Computed Tomography Test 1 Questions with Accurate Answers
A common site for the IV administration of iodinated contrast media is the anterior recess of the elbow, otherwise known as the: a. brachial fossa b. Olecranon fossa c. retro-ulnar space d. antecubital space correct answer d. antecubital space A CT gantry includes all of the following components except: correct answer A. Collimators B. Detectors C. Central Processing Unit D. Bow tie filters A CT number of -1000 represents what? correct answer air A CT number of 0 represents what...
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Computed Tomography- Test 1 Questions with Accurate Answers
1971 The EMI Mark 1 correct answer (CT brain scanner prototype) was installed at Atkinson-Morley's Hospital under the direction of radiologist, Dr. James Ambrose. 1972 correct answer A woman with a suspected brain lesion was the first patient scanned. The scanner confirmed the presence of the lesion. 2 elements in a basic scheme for data acquisition are: correct answer beam geometry & components 3 types of acquisition geometries correct answer 1. parallel beam 2. fan beam 3. spira...
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Ct Questions With Accurate Answers
___________________ are the two main components of the CT Computer correct answer Microprocessor and primary memory __________________means data can be stored or accessed at random from anywhere in main memory in approximately equal amounts of time correct answer RAM _______ratio results in extended imaging and reduced patient dose correct answer 2:1 _______ratio results in overlapping images and higher patient dose correct answer .5:1 ___% of x-ray incidents on detector are absorbed...
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01 - CT Basics: Fundamentals Questions with Accurate Answers
"Helical" refers to the type of scanning that occurs when the x-ray tube rotates around the patient as the table transports the patient through the gantry opening. A) True B) False correct answer True "Spiral" or "Helical" Scanner correct answer Terms used to refer to* 6th generation scanners* because of the geometry of the x-ray tube motion in relation to the anatomy of interest. *Fifth generation* CT scanners are specifically designed for *cardiac imaging*. A) True ...
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Computed Tomography (CT) Questions with Accurate Answers
(2) CT collimators correct answer Beam collimation (Pre) Detector collimation (Post) (2) CT detectors correct answer Gas Ionization Detectors Scintillation Detectors (2) Types of CT Image Acquisition correct answer Sequential Volumetric (3) CT Axis correct answer X Axis Y Axis Z Axis (3) CT Beam Geometries correct answer *The size, shape, and motion of the beam and its path Pencil - Parallel beam Fan - 10 degree divergent beam Cone - Wide divergent fan beam *Modern CT* ...
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CT Physics Questions with Accurate Answers
three-dimensional imaging procedure. correct answer Quantitative 1 Sievert is equal to: correct answer 100 rems A 10 ´ 10 matrix consists of ______ pixels. correct answer 100 A common operation in this processing technique is Fourier domain processing correct answer Global Operations A computed tomography image of 12 bits per pixel means: correct answer each pixel can have a total of 4096 shades of gray A digital image is a discrete function correct answer True A digital image...
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NSG 6660: Fundamentals of Advanced Nursing Final Exam Questions with Accurate Answers
According the to the ICN, the nature of practice includes the ability of the APN to integrate research, ______, and clinical management correct answer education Define and give examples of interpersonal attributes that are necessary for successful collaboration correct answer a. Autonomous, trusting relationship b. Confidence in partner's skill c. Bidirectional referrals and consultations d. Consensus-driven decision making e. Equitable reporting lines and evaluators f. Mutually defin...
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Introduction To Professional Nursing Final Questions With Accurate Answers
2 main categories of nursing journals correct answer Research and clinical A client 68 years of age who has spent their working life in the U.S. is most likely covered by which of the following health insurance programs? a) Capitation b) Medicaid c) Medicare d) AmeriCare correct answer Medicare A client has a private insurance policy that pays for most health care costs and services. In what sense is this plan a third-party player? a) Medicare and Medicaid will pay most of the remain...
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Computed Tomography Questions With Accurate Answers
a circular device that houses the x-ray tube, DAS, and detector array is called correct answer gantry a narrow window width would display correct answer high contrast a patient involved in a car accident is brought to the radiology department for CT scan of the head, which lesion is most readily detected on non contrast image correct answer acute subdural hematoma a pixel with a size of 2 mm refers to its size on the correct answer imaged structure a relative comparison of x-ray atte...
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