and both have metallic implants: LEFT KNEE STD (exclude T2 MAP) Date of Birth, Sex, and Weight are entered appropriately, and Patient Position should be Supine. OAI Right (Left) Knee should be selected from the Study drop-down list. 1.3 Procedure for Repeat Exams Repeat exams should be performed as quickly as possible. Ideally, MRIs of insufficient quality should be identified by the MRI technologist at the time of acquisition and repeated immediately. Repeat exams should be taken within 3 weeks of the original MRI. 2.0 Knee MRI Exam Specifics 2.1 Positioning the Participant for the Knee MRI Proper participant set up should ensure correct positioning of the knee and sufficient participant comfort to limit motion artifacts. 1. The knee coil base should be positioned on the in alignment with the alignment marks on the table. 2. The knee coil should be used in only the L60 or R60 positions. 3. The knee pad should be inserted into the coil; this is the only pad that should be used beneath the knee such that the correct of flexion can be achieved in a consistent manner. The pad should be positioned such that it over hangs the coil edge by -1.5cm. 4. The knee should be positioned in the coil such that the bottom of the patella is aligned with the center mark of the coil. 5. The leg should be in a relaxed, neutral position. 6. The foot should be vertical, with medial foot and the big toe orthogonal to the bed. The foot should be sandbagged to retain this position. 7. The air cushion should be positioned centered on the patella (remove air first, leave valve open) before securing the top and bottom halves of the RF coil. 8. A positioning strap should be used secure both the coil and the contralateral knee. Pads should be used to ensure patient comfort. 9. The landmark position should be the center of the RF coil (align with marks) which should correspond to the bottom of the patella.
and both have metallic implants: LEFT KNEE STD (exclude T2 MAP) Date of Birth, Sex, and Weight are entered appropriately, and Patient Position should be Supine. OAI Right (Left) Knee should be selected from the Study drop-down list. 1.3 Procedure for Repeat Exams Repeat exams should be performed as quickly as possible. Ideally, MRIs of insufficient quality should be identified by the MRI technologist at the time of acquisition and repeated immediately. Repeat exams should be taken within 3 weeks of the original MRI. 2.0 Knee MRI Exam Specifics 2.1 Positioning the Participant for the Knee MRI Proper participant set up should ensure correct positioning of the knee and sufficient participant comfort to limit motion artifacts. 1. The knee coil base should be positioned on the in alignment with the alignment marks on the table. 2. The knee coil should be used in only the L60 or R60 positions. 3. The knee pad should be inserted into the coil; this is the only pad that should be used beneath the knee such that the correct of flexion can be achieved in a consistent manner. The pad should be positioned such that it over hangs the coil edge by -1.5cm. 4. The knee should be positioned in the coil such that the bottom of the patella is aligned with the center mark of the coil. 5. The leg should be in a relaxed, neutral position. 6. The foot should be vertical, with medial foot and the big toe orthogonal to the bed. The foot should be sandbagged to retain this position. 7. The air cushion should be positioned centered on the patella (remove air first, leave valve open) before securing the top and bottom halves of the RF coil. 8. A positioning strap should be used secure both the coil and the contralateral knee. Pads should be used to ensure patient comfort. 9. The landmark position should be the center of the RF coil (align with marks) which should correspond to the bottom of the patella.
MRI_Manual%20Web_06May2013.docx