Question: Suppose a slice select gradient G. = 20 mT/m is used to excite a slice which is 10 mm thick. %3D a) What is

Suppose a slice select gradient G. = 20 mT/m is used to

Suppose a slice select gradient G. = 20 mT/m is used to excite a slice which is 10 mm thick. %3D a) What is the required rf bandwidth? b) If G, is reduced to 5mT/m, but 7,j is unchanged, by what factor is the total number of zero crossings increased or decreased?

Step by Step Solution

★★★★★

3.46 Rating (162 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

To solve this question lets address each part separately a Required RF Bandwidth The relationship be... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Electrical Engineering Questions!

a) In terms of the timing and gradient parameters shown in Fig. 9.6, show that the phase during the first (negative) gradient lobe is $(z, t) Gz(t - t1) - yAB(2)(t 27) t1

Consider the excitation of a slice of thickness Az = 4 mm, by a bandlimited rf pulse on for a time duration T,f = 4ms. Assume that the flip angles of the spins are dominated by the exact (time)...

Magnetic resonance imaging ( MRI) is a noninvasive medical diagnostic device that uses magnets and radio waves to produce a picture of an area under investigation inside the body. A patient is...

I need help on questions 12-15 in section 5. Could you also explain how you solved them 1 Sample Questions from Previous FIN 3310 Departmental Final Exams (Revised 2015) Printed below is a sampling...

I really need an answer for module 3 entries (June 17-30) and midterm evaluation and final evaluation. I need them asap please help. Zacks Bike Hut Level II 1st Web-Based Edition Introduction Page 1...

Portray in words what transforms you would have to make to your execution to some degree (a) to accomplish this and remark on the benefits and detriments of this thought.You are approached to compose...

ESTIMATING DIRECT RETURN ON INVESTMENT OF INDEPENDENT VERIFICATION AND VALIDATION USING COCOMO-II James B. Dabney Systems Engineering Program University of Houston - Clear Lake Houston, Texas...

& STRESS, OCTOBER \u0001 DECEMBER 2003, 17, NO. 4, 321 \u0001/336 WORK VOL. / 12-h workdays: current knowledge and future directions SALAHEDDINE BENDAKw Department of Industrial Engineering, King...

1- Three students are planning their careers. Robert says he is meticulous and wants to be responsible for financial records and reports at a large corporation. Suzanne says she is a risk-taker and...

Problem 02. Precision Design Pty Ltd ('PD') is an innovative industrial design firm providing realistic 3D digital imaging using the latest drafting technology. Emma Janson founded the firm in 1981....

A shelf at a grocery store contains 9 boxes of Cheerios, 9 boxes of Frosted Flakes, and 2 boxes of Apple Jacks. If a customer randomly grabs three boxes, and the first two selected are Cheerios, what...

Kings Department Store is contemplating the purchase of a new machine at a cost of $22,802. The machine will provide $3,500 per year in cash flow for nine years. Kings has a cost of capital of 10...

Companies must evaluate the relevancy of theirinternal resources. This happens in two ways: they test whether resources are ( 1 ) similar to those the frm needs todevelop and 2 ) superior to those of...

Major Instrument, Inc. manufactures two products: missile range instruments and space pressure gauges. During April, 50 range instruments and 300 pressure gauges were produced, and overhead costs of...

Santana Corporation manufactures snowmobiles in its Blue Mountain, Wisconsin, plant. The following costs are budgeted for the first quarters operations. Machine setup, indirect materials ........ $...

Perdon Corporation manufactures safes'large mobile safes, and large walkin stationary bank safes. As part of its annual budgeting process, Perdon is analyzing the profitability of its two products....

Flextronchip, an OEM manufacturer, has a fifth-generation chip for cell phones, with chip specification of 0.2 0.0002 mm for the distance between two adjacent pins. The loss due to a defective chip...

Shady Lady sells window coverings (shades, blinds, and awnings) to both commercial and residential customers. The following information relates to its budgeted operations for the current year. The...

Which of the following best describes the interdependence of the public and private sectors? Question 2Answer a. They operate independently of each other b. One always dominates the other c. They...

1. (15 pts) If the maximum gradient strength is 50 mT/m. a. Calculate the minimal bandwidth of the RF pulse to excite a 2 mm thick slice. b. Using the same RF pulse, how can you double the slice...

Prescribed Parameters: Echo spectral width Echo Time (msec) Repetition Time RF pulse duration # of lobes in RF pulses Phase encode time (tped = 0.002) Slice Thickness Field of view- Matrix size Image...

Solve the questions below related to this code: Introduction The base code for a pulse sequence program is given below clear % time (in seconds) TR=1; % TE=0.02; % use this line for echo PS...

Problem 10.5 Assume that the slice select gradient amplitudes are changed from those shown in Fig. 10.11 to be Gp. = Gny, = 2Gp.. What are the angles @ and of the resulting slice? Draw the excited...

Problem 10.5 Assume that the slice select gradient amplitudes are changed from those shown in Fig. 10.11 to be Gor=-Goy2Go What are the angles and of the resulting slice? Draw the excited plane (use...

A 1.5T MRI chamber has a linear slice select gradient of 430 Gauss/cm centred in the middle of the chamber, and you would like to image a person's Thyroid with 90 image slices (slice 45 is at z=0)....