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Week 2 - Normal Rad

9/21 - Normal Rad

QuestionAnswer
***Should you use T1, T2, or PD for images pertaining to musculoskeletal? PD
***Which sequence has TR > 1000ms, TE<30ms, and a FA of 90 degrees? PD
Which sequence has a TR that varies? T2 weighted gradient echo (aka: GRASS)
What is an advantage of using GRASS sequencing? You can see small slices. Usually used for cervical spine and ACL
***Which sequence has a FA of 5-20 degrees? T2 weighted gradient echo (GRASS)
***Which sequence imaging is the only one to use inversion time (TI)? STIR (short tau inversion recovery.
***Which sequence imaging has a TR>2000ms, TE>60ms, and a FA 180 degrees? STIR
Which sequencing is the MOST SENSITIVE to see pathologies? STIR, it detects pathologies the earliest. *It CANCELs out FAT
What is another way to cancel out fat in terms of sequencing? Fat saturation imaging. (I didn't get much on this, sorry)
Q: A standard series of cervical x-rays consists of three views. What are they? A: The standard series consists of a Lateral Cervical Neutral (LCN), AP Lower Cervical (APLC), and AP Open Mouth (APOM).
Q: An extended series of cervical x-rays consists of five views. What are they? A: The extended series consists of all three standard series views (LCN, APLC, and APOM) PLUS a Left and Right Oblique (LPO, LAO, RPO, or RAO).
Q: A Davis series of cervical x-rays consists of seven views. What are they… and when is it used? A: The Davis series consists of all three standard series views (LCN, APLC, APOM) PLUS a Left and Right Oblique PLUS a Lateral Cervical Flexion and Extension. The Davis series is used in whiplash and trauma cases.
Which view shows IVFs? Oblique views
T/F when taking obliques it is ok to do a Left anterior oblique and a Right posterior oblique? NO way Jose! they will be showing the same IVF's
Which view is used to evaluate intersegmental movement? Lateral cervical flexion and extension
Name 4 contraindications to a flexion/extension study? 1.Fractures (unstable) 2.Dislocations 3.Malignancy 4.Infection. Therefore, it is very important to initially evaluate the cervical spine with a LCN after trauma prior to a flexion/extension study
Created by: pcc Normal Rad