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You are required to obtain an MRI image of a patient's chest using a 1.5 Tesla scanner. Assume that the chest is cylindr
Posted: Thu Feb 17, 2022 11:07 am
by answerhappygod
- You Are Required To Obtain An Mri Image Of A Patient S Chest Using A 1 5 Tesla Scanner Assume That The Chest Is Cylindr 1 (69.7 KiB) Viewed 31 times
You are required to obtain an MRI image of a patient's chest using a 1.5 Tesla scanner. Assume that the chest is cylindrical with diameter of 40 cm and 25 cm in height. Also assume that the centre of the chest is the centre of the gradient coil. (gyromagnetic ratio of hydrogen = 42.58 MHz/T) (i) Calculate the resonant frequency for protons at the top of the chest (and coordinate z = 0) if a y gradient of 30 mT/m is applied. (4 marks) (ii) Find the overall frequency spread of the chest (at coordinate z=0) if the y gradient of 30 mT/m is applied. (2 marks)