Isabellahedward

An RF pulse of what flip angle will maximize the component of the net magnetization projected into the transverse plane? a. 180 b. 120 c. 90 d. 45 - c. T1 relaxation refers to ____ relaxation. a. spin-spin b. longitudinal c. phase d. transverse - b. Which of the following statements is false? a. T1 relaxation refers to longitudinal recovery of magnetization while T2 relaxation refers to the transverse decay of magnetization b. T1 relaxation and T2 relaxation occur simultaneously

3D gradient echo axial views can be used in cervical spine imaging to provide - Thin, contiguous sections of the spine, the ability to reformat into any other imaging plane, retrospectively, the ability to get either T1, spin density or T2* information by changing parameters. In complete spine imaging, to rule out metastatic lesions of the spinal cord, contrast enhancement can be used with T1 weighted images because - metastatic lesions enhance and normal cord does not Due to the difference...

If a brain exam is being performed and the request is made to rule out acoustic neuroma, a protocol with thin cuts through the _________ should be performed. - Inner auditory canals The _____________ imaging plane would be the most optimal slice orientation for evaluation of Arnold Chiari Malformation and its inferior cerebellar tonsillar herniation. - sagittal A FLAIR sequence with a long TI is utilized to: - null the signal from CSF If a brain exam is being perfomed and the request is mad...

The NMV is rotated to the physical negative Z axis by applying a...? - C)180 pulse Increasing which parameter is considered the "best" technique for improving image quality? - C)NEX Studies have concluded that static magnetic fields up to what tesla produce no substantial harmful biological effects. - C)2.0 Tissues that have low (short) relaxation times have: - Higher relaxation rates Nuclei in their natural enviroment ( in the absence of a significant magnetic field) are aligned... - Ra...

This "plus" sign is an indication of? - an intersection What does this sign mean? (a man with a flag in an orange rhombus) - flagger is stationed to control traffic at a construction area Shared center lanes that are marked on each side by a solid yellow and dashed yellow lines are reserved for __________ and can be used by vehicles traveling in their directions - makin left turns You are sitting in the passenger seat of a stopped car. A second car runs into the passenger side door. Whi...

If another driver is passing your vehicle, you must: - stay in the lane and do not increase your speed A double solid white line marks the edge of a traffic lane where: - travel in the same direction is permitted on both sides of the lane, but crossing the line is prohibited Passing on both sides of a highway is not allowed when: - both sides have solid yellow line markings Which of the following statements is true regarding yellow and white lane markings on the road? - A solid white line b...

A runner has depleted all the oxygen available for muscle energy. Which of the following will facilitate his continued muscle performance? - Answer: Anaerobic glycolysis What causes the rapid change in the resting membrane potential that initiates an action potential? - Answer: Sodium gates open, and sodium rushes into the cell, changing the membrane potential from negative to positive. A 12-year-old male is diagnosed with Klinefelter syndrome. His karyotype would reveal which of the follo...

Which of the following is not a traveler responsibility? - Travelers must use DTS to arrange their PCS travel. If a traveler has a GTCC, they must split disburse their trip reimbursement. What two entities split the reimbursement? - Traveler & GTCC vendor Which of these statements accurately describes a DTS role? - The NDEA is able to enter and sign DTS vouchers on the traveler's behalf. Which is not a method for updating your DTS personal profile? - Using the Trip Tools feature on the T...

who is at risk for MDRO infection - patients with severe disease, including compromised host defenses from underlying medical conditions, recent surgery, or indwelling medical devices (ex: foleys or ET tubes) what are classic signs of cardiac tamponade? - hypotension, narrowing pulse pressure, tachycardia with weak, thready pulse, and tachypnea what arrhythmia is mitral valve insufficiency associated with? - afib what defines oliguira? - less than 500 ml of output per day what does renal ...

active transport - process in cells that requires energy to transport materials to, from, and within the cell albinism - inherited disorder that is indicated by the absence of melanin in the skin, hair, and eyes anabolism - process of chemical reactions that work together to build things, such as creating molecules from atoms anatomy - study of the structure of an organism atom - The most basic level of the body's structure ADHD - disorder characterized by difficulty focusing attention a...