Nuclear Magnetic Resonance-Bushberg Chapter 14 Diagnostic Radiology Imaging Physics Course Raphex 2002 Diagnostic Questions Raphex 2000 Diagnostic Questions D51.A higher intensity MRI spin echo signal is produced D43.A spin echo pulse sequence is used with a TE time by: .weighted. ◆A.Long T1,long T2 ◆B.Long T1,short T2 ÷A.Atomic number(Z) ◆C.Short T1,long T2. ◆B.Mass number(A) ◆D.Short T1,short T2 C.Proton density (PD) ÷D.T1 ◆E.T2 49 Raphex 2001 Diagnostic Questions Raphex 2000 Diagnostic Questions Da7.bgeeeooeeanehMalio D47.A spin-echo MRI pulse sequence in which water is bright and soft tissues are darker would utilize: (msec) TR(msec) ◆A 400 ◆B 100 400 ◆A.Long TE,long TR. 8 ◆B.Long TE,short TR ◆C.Short T1,long T2. ·E 20 2000 ◆D.Short TE,long TR ·D47.T1-weighted. ◆E.Short TE,short TR. D48.T2-weighted. .D49.Proton density weighted. 9.19and26May2005 13Nuclear Magnetic Resonance – Bushberg Chapter 14 Diagnostic Radiology Imaging Physics Course 9, 19 and 26 May 2005 13 © UW and Brent K. Stewart, PhD, DABMP 49 Raphex 2002 Diagnostic Questions Raphex 2002 Diagnostic Questions ™ D51. A higher intensity MRI spin echo signal is produced A higher intensity MRI spin echo signal is produced by: ™ A. Long T1, long T2. A. Long T1, long T2. ™ B. Long T1, short T2. B. Long T1, short T2. ™ C. Short T1, long T2. C. Short T1, long T2. ™ D. Short T1, short T2. D. Short T1, short T2. © UW and Brent K. Stewart, PhD, DABMP 50 Raphex 2000 Diagnostic Questions Raphex 2000 Diagnostic Questions ™ D43. A spin echo pulse sequence is used with a TE time A spin echo pulse sequence is used with a TE time of 20 ms and a TR of 3000 ms. The MR image obtained of 20 ms and a TR of 3000 ms. The MR image obtained by this technique will be _ weighted. by this technique will be _ weighted. ™ A. Atomic number (Z) A. Atomic number (Z) ™ B. Mass number (A) B. Mass number (A) ™ C. Proton density (PD) C. Proton density (PD) ™ D. T1 ™ E. T2 © UW and Brent K. Stewart, PhD, DABMP 51 Raphex 2001 Diagnostic Questions Raphex 2001 Diagnostic Questions ™ D47-D49. Using a normal spin-echo pulse sequence in MRI, match echo pulse sequence in MRI, match the timing with the type of image: the timing with the type of image: TE (msec) TE (msec) TR (msec) TR (msec) ™ A. 20 400 ™ B. 100 400 ™ C. 100 2000 ™ D. 1000 400 ™ E. 20 2000 ™ D47. T1-weighted. weighted. ™ D48. T2-weighted. weighted. ™ D49. Proton density weighted. . Proton density weighted. © UW and Brent K. Stewart, PhD, DABMP 52 Raphex 2000 Diagnostic Questions Raphex 2000 Diagnostic Questions ™ D47. A spin-echo MRI pulse sequence in which water is echo MRI pulse sequence in which water is bright and soft tissues are darker would utilize: bright and soft tissues are darker would utilize: ™ A. Long TE, long TR. A. Long TE, long TR. ™ B. Long TE, short TR. B. Long TE, short TR. ™ C. Short T1, long T2. C. Short T1, long T2. ™ D. Short TE, long TR. D. Short TE, long TR. ™ E. Short TE, short TR. E. Short TE, short TR