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Download ARMRIT Final Exam 2025: MRI Technologist Certification Practice Q&A and more Exams Magnetic Resonance Imaging (MRI) in PDF only on Docsity!
age 1 of 130 ARMRIT FINAL EXAM STUDY GUIDE 2025/2026 ACCURATE QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES | | 100% GUARANTEED PASS Different tissues that have signals that appear similar on an MR image are described as: A) hypointense B) hyperintense C) isointense D) isodense ....... ANSWET.....0000 isointense age 2 of 130 in a large main magnetic field such as those employed in MRI, the motion of a hydrogen proton has been described as wobbling like a spinning top. this motion is called A) precession B) resonance C) frequency D) angular momentum ........ ANSWETF....000 precession magnetic resonance imaging is derived from the process known as: A) magnetic resonance angiography B) magnetic relaxation imaging C) nuclear magnetic resonance age 4 of 130 B) radio frequency C) gyro-magnetic frequency D) resonance frequency ....... ANSWET...eseeee resonance frequency the introduction of gadolinium based contrast enhancement agents by intra-venous injection can involve passing through an abnormal blood brain barrier. the tissue compartments involved are the: A) intravascular to interstitial B) extracellular to intracellular C) hepatobiliary to renal D) extradural to renal ....... Answer... intravascular to interstitial age 5 of 130 t2 is the measurement of time fot the transverse component of the NMV to decrease what percentage of its maximum value after the application of a 90 degree radio-frequency pulse A) 33% B) 63% C) 37% D) 67% woven ANSWET..esss00e 37% in the USA, the MRI system's magnetic field and vector that represents it is symbolized: A) BI B) B2 C) B3 age 7 of 130 D) rephase ....... ANSWET....00000 shift in both size and direction Which type of electromagnetic coils are designed to stimulate and detect an MR signal? A) gradient coils B) radio-frequency coils C) shim coils ....... ANSWEL sssesees radio-frequency tissues that are less efficient at spin-spin interactions because they contain more free water, such as CSF, should have A) High T2 values and produce hypointense signals B) High T2 values and produce hyperintense signals C) low T2 values and produce hypointnese signals age 8 of 130 D) low T2 values and produce hyperintense signal seseeee Answer.........High T2 values and produce hyperintense signals magnetism can be defined as the ability of certain substances to attract: A) Copper, aluminum, tin B) lron, cobalt, nickel C) Bronze, niobium, titanium D) Neodymium, niobium-titanium, lodestone ....... ANSWET.....006 lron, cobalt, nickel the purpose of magnetic resonance angiography is to image the: A) stationary soft tissue age 10 of 130 B) 12.8 MHz/Tesla C) 25.5 MHz/tesla D) 63.9 MHz/tesla .......ANSWeF.....00 63.9 MHz/Tesla In MR imaging, for chemical substance to be affected by the main magnetic field and the radio-wave it must contain an: A) Odd number of electrons B) Odd number of total protons and neutrons C) Even number of total electrons and neutrons D) even number of protons ....... ANSWET...sese0e Odd number of total protons and neutrons A 1.5T magnetic field is equal to: A) 150 gauss age 11 of 130 B) 1500 gauss C) 15,000 gauss D) 150,000 gauss ....... Answer.........1 5,000 gauss the components of the gyromagnetic ratio are: A) stimulation to relaxation B) protons to electrons C) magnetic moment to angular momentum D) main magnetic field to radio-frequency signal ..magnetic moment to angular momentum fast transition phenomenon and entry phenomenon are theories that explain which of the following characterisitics: A) T1 effects age 13 of 130 of the following statements, which describes part of the basic MR imaging process: A) a patient is placed isocenter to ionizing radiation B) the patient is exposed to ionizing radiation C) the generated image contains hypersense and hypodense areas D) radio frequency signals interact with hydrogen protons seseees Answer.........radio frequency signals interact with hydrogen protons which type of electromagnetic coils correct inhomogeneities in the main magnetic field? A) gradient coils age 14 of 130 B) radio frequency coils C) shim coils ....... ANSWET..sese0e shim coils immediately after an initial 90 degree radio frequency pulse is turned off, the hydrogen protons will begin to: A) Rephase B) Dephase C) Stay in the transverse plane D) Stay in phase ....... ANSWET.....e00- Dephase tissues that are very efficient at spin-lattice interactions near the larmor frequency, such as fatty tissues should have: A) Low T1 values and produce hyperintense signals B) High T1 values and produce hyperintense signals age 16 of 130 A) T1 effects B) T2 effects C) hydrogen concentration D) velocity effects ....... Answer... T2 effects the basic process of MR signal generation contains 2 basic steps, they are: A) parallel alignment and anti-parallel alignment B) stimulation and relaxation C) magnetization and ionization D) magnetization and ionization ....... ANSWET....eceee stimulation and relaxation the Tl process is also known as: age 17 of 130 A) spin spin B) spin density C) spin lattice D) spin wrap ....... ANSWET....ceee spin lattice the T2 process is also known as: A) spin spin B) spin density C) spin lattice D) spin wrap ....... ANSWET..eseceee spin spin once in the main magnetic field, a majority of hydrogen protons will align themselves age 19 of 130 which type of receiver radio frequency coil is placed close to a patient's body for the purpose of imaging superficial anatomic structures A) solenoid coils B) maxwell coils C) surface coils D) golay coils ....... ANSWETF....006 surface coils an equation derived to predict the MR signal intensity of a particular tissue as the result of a spin echo pulse sequence is the: A) larmor equation B) bloch equation age 20 of 130 C) phase shifts formula D) resonance frequency formula ....... ANSWET....e0e0e larmor equation which statement is true of the relaxation process? A) T2* effects slow down T2 decay B) without the effects of T2*, T2 decay continues C) T2* effects can not be corrected for D) T2* effects have no effect on T2 decay seseeee Answet.........without the effects of T2*, T2 decay continues because of the spinning motion of the hydrogen proton it has the same properties as a bar magnent. the hydrogen protons spinning motion gives it a A) magnetic charge 
