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A Renaissance in Orthopedic scanning

Clinical News
Jones, Alun Philips Healthcare Philips Global

After listening to many comments, the Applications and Clinical Science teams have spent time in redefining old scanning methods and creating new ones to give optimal Image Quality for Orthopedic imaging.

Protocol Database renewed

The complete protocol database has been revamped with, for example in the knee, new protocols in all orientations being provided. Also protocols have been created for each coil that can be used for a given anatomy. This should ensure an optimal starting point for orthopedic scanning.


A series of ExamCards for all field strengths is also available on NetForum - with in particular a "Master Class" by Dr. Ron Shnier from Sydney on Orthopedic scanning at 3.0T. This quick and very efficient method of sharing protocols and procedures is one of the key benefits to customers.


Links to ExamCards by Dr. Shnier:

3.0T Routine knee

3.0T Fast knee

3.0T Routine hip

3.0T Routine ankle

3.0T Routine elbow

3.0T wrist

3.0T shoulder with SENSE Shoulder coil

3.0T shoulder arthrography


New scanning technique

In addition a new scanning technique has been created - Asymmetric TSE - which allows faster scan times (on average 30% faster) for proton density and T2 TSE sequences as well as enhancing the fluid signals and providing much better imaging of cartilage.


Faster scanning:

 0.46x0.58x2.5mm <br>
Linear TSE<br>
TR/TE 1500/30 DRIVE<br>
Scan time 2:20min 0.46x0.58x2.5mm<br>
Asymmetric TSE<br> 
TR/TE 1500/30 DRIVE<br>
Scan time 1:50min
Linear TSE
TR/TE 1500/30 DRIVE
Scan time 2:20min
Asymmetric TSE
TR/TE 1500/30 DRIVE
Scan time 1:50min


Improved cartilage imaging:



This new technique can be combined with fat suppression techniques such as STIR, SPIR and SPAIR giving full flexibility.

 PDW SPAIR,  3:15 min. STIR, 3min.
PDW SPAIR, 3:15 min.
STIR, 3min.


If faster scan times are not your driving force, Asymmetric TSE can also be used to give higher resolution scanning in the same time as the normal TSE sequences. Asymmetric TSE can also be used to further reduce artifacts from metal implants such as orthopedic screws, which can cause significant image quality problems.


As with all imaging techniques, due to the common software platform of our systems, this technique is available on the Achieva 3.0T, Panorama 1.0T and Intera/Achieva 1.5T.


Hi-res 3D

If high-resolution 3D sequences are required then every eventuality is covered. For isotropic T2 TSE there is the new VISTA sequence. Cartilage/fluid imaging is easily performed using 3D FFE WATS and for imaging in intra-articular contrast injected arthrography examinations the fat suppressed THRIVE sequence is an extremely good option.
 ProSet with voxel size 0.59 mm2<br>
Left: fluid optimized<br>  Right: cartilage optimized
ProSet with voxel size 0.59 mm2
Left: fluid optimized
Right: cartilage optimized



Not forgetting an option for scanning that has been available for some time now - but nonetheless is still Philips unique - the microscopy coils that allow very high-resolution small field of view images to be acquired.

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Aug 10, 2006

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Clinical News
Achieva 1.5T, Achieva 3.0T, Intera 1.5T, Intera 3.0T, Panorama HFO
Release 1, Release 1 (FreeWave), Release 11, Release 12, Release 2, Release 2 (FreeWave)
Explorer / Nova Dual, Master / Nova, Master / Quasar Dual, Nova, Nova Dual, Omni / Stellar, Power / Pulsar, Pulsar, Quasar Dual
Ankle, Elbow, Foot, Hand, Hip, Knee, Musculoskeletal, Shoulder, TMJ, Wrist

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