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Thursday, May 28, 2009

Iphone and MRI its here ! as seen on television


 

AMAZON search for Iphone

GOOGLE search for iphones
  

OsiriX , the wonderful open-source Mac image viewer, just announced the availability of an iPhone version.

Like a lot of imaging software, OsiriX lets one look at X-rays, ultrasounds, CT and MR images. Besides merely viewing, it also lets one reconstruct 3D images and rotate them around.

Unlike most imaging software, OsiriX is written by radiologists who also happen to be clever programmers. Also unlike most imaging software, OsiriX doesn’t require a second mortgage. The full Mac-based version is free, and the iPhone app is $20.

Why should a non-physician care about Osirix? Because this little app will let you carry around a library of your own personal medical images. Even in my prior life as an internist, I always urged patients to keep their own copy of their more important images. The OsiriX app finally makes this easy and portable. 

In the radiology biz, we call prior imaging exams “old films”, and they can be staggeringly useful to a patient and their physicians. One of my patients once avoided having a risky lung biopsy simply because he happened to have an old film at home as a curiosity. This old film showed us pretty convincingly that the potential lung cancer we saw on his new film was actually a benign granuloma, and was unchanged over the intervening decades.

How do you get copies of your own images? Ask your local radiology department to burn you a CD in DICOM format. Most departments will also include free image-viewing software on the disk. If you’re a Mac owner, download a copy of OsiriX, which will read virtually all of these disks, even if written by PC’s.

If you’re a geeky radiologist, you’re probably already playing with the new app. If you’re a non-geek, ask your teenager or local radiologist to put it on your phone for you.(source)




Philips Panorama High Field Open


Comfortable, high field open MRI

Our Panorama high field Open MRI appeals to both patients and referring physicians alike with it’s wide-open design, high image quality, large field of view and broad coverage of clinical applications. Thanks to it’s unique features, the Panorama HFO provides the potential for you to attract more patients and increase your referral area.

 

The Panorama HFO provides a 360-degree panoramic viewing angle and spacious 160 cm-wide patient aperture ensuring a comfortable, relaxing MRI experience for anxious, elderly, obese or claustrophobic patients.

 

While covering all routine applications, it is especially ideal for orthopedic, pediatric and bariatric imaging. The wide-open patient space allows you to explore new clinical applications such as biopsy procedures and kinematic joint studies.

 

High Field Performance comparable to 1.5T in a truly open configuration

  • Solenoid Technology coils
    • Superb coverage and comfort
    • High SNR
    • Fully SENSE compatible
    • Excellent homogeneity
  • 1.5T signal, 1.0T contrast for minimal susceptibility and distortion
  • SmartExam – One click to consistent and reproducible MRI exams
    • One click for planning, scanning and processing
    • 100% consistency and reproducibility
    • Covers over 75% of examinations
    • Brain, Knee, Shoulder and Spine capabilities
  • ExamCards automate the most complex studies
  • Clinical performance in all applications

 

Preferred by Patients

  • 72% of patients prefer the Panorama over any cylindrical system*
  • Ambient Experience further boosts preference
  • Preference represents value
  • Ability to market your practice directly to the patient
  • Source: GfK Panelservices Benelux

 

 

Going Beyond the Bore 

  • Area of interest can always be placed at iso-center
    • Uncompromised fat-sat
    • Fewer motion artifacts
  • Virtually any patient, any position
    • No coils necessary for the most challenging patients
    • Sideways scanning is no issue
  • Open line of sight – always
    • Reduced need for sedation
    • Visual contact w/loved ones always intact
  • Unlimited accessibility
    • Real-time scanning & viewing
    • Patient can remain in scanner
      • Reduced need for repositioning
      • Fast, accurate scanning

Hitachi Oasis 1.2 Tesla open MRI

I have worked on the Aries II this looks like a high field version of that scanner if anyone has Experience with this scanner please post a comment. Good or bad. Thanks


http://www.oasismri.com/

    

OASIS™  featured on National Medical Report

 

OASIS™ provides maximum diagnostic performance and uncompromised patient comfort. Combining high-performance MR electronics of the best high-field equipment — fast gradients and multi-channel RF technology with Hitachi-designed Zenith RF coils — with Hitachi’s proprietary 1.2T open architecture vertical-field magnet, Oasis is a new generation of MR systems providing diagnostic confidence, patient comfort and investment value.

Oasis supports demanding workflow, features Hitachi’s legendary reliability, is easy to learn and use, and provides powerful differentiating features for you MR imaging services.

 

Wednesday, May 27, 2009

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BrainLab AG is releasing Digital Lightbox A giant Iphone for the OR










BrainLab AG is planning on releasing an updated version of its Digital Lightbox multitouch clinical display. Still reminding us of a giant iPhone, the unit interfaces with EMRs to display and manipulate clinical images easily and intuitively, essentially making the keyboard or any other interface device unnecessary.





High field Extremity MRI



High Field (1.0 T) Extremity MRI

The dedicated extremity MR scanner at Mass General Imaging West, Waltham, is designed for

scanning the hand, wrist, elbow, foot, ankle, and knee

The diagnostic quality is comparable to 1.5 T conventional whole-body MR scanners

The maximum field of view of the extremity MR is 16 cm, which limits visualization of

longitudinal structures such as the quadriceps muscle and Achilles tendon

The bore size (18 cm) is too small for some applications (e.g. large knees) and is not suitable for

patients with leg or ankle casts or patients with limited flexibility

The 1.0 T MR dedicated extremity scanner (Figure 1),

installed at Mass General West Imaging, Waltham, is

designed to image the bones, joints, and soft tissues of

the hand, wrist (Figure 2), elbow, foot, ankle, and

knee. Because the joint of interest is centered in the

extremity scanner, it is always at the “sweet spot” of

the magnet, optimizing image quality, which is not

possible for elbow, wrist, or hand images in a

conventional whole-body MR scanner.

Images obtained with a 1.0 T MR extremity scanner are

generally regarded as comparable to those obtained in

a standard 1.5 T whole-body scanner, although there

are limited objective studies at this time. A

comparative study of patients with rheumatoid arthritis

showed excellent agreement between 1.5 T whole-body

MR and 1.0 T extremity MR in the scores for erosion,

synovitis, and bone marrow edema. Another study

compared accuracy and test-retest precision of

quantitative cartilage morphology in these two MR

systems and found no systematic bias between the

measurements of the cartilaginous surface of the

medial tibial plateau, the lateral tibial plateau, or the

central medial femoral condoyle. However, the study

revealed a statistically significant (P <>

of about 10% in cartilage volume (VC) and cartilage

thickness (ThCtAB) in the central lateral femoral

condyle.

Limitations

Although the large majority of patients can be scanned

with extremity MR, it is not suitable for all patients. The

bore size is 18 cm at its narrowest (Table 1), which

means that the scanner cannot be used for knee

imaging if the knee or distal thigh circumference is

greater than 22 1/4 inches (56.5 cm). Although casts

on wrists or arms are usually small enough to fit into

the magnet, a cast on the leg or ankle will not fit. In

addition, the patient must be able to flex his or her

ankle in order to pass the foot through the center of

F igure 1. The 1.0 T extremity MR scanner.

the bore. Therefore it is not possible to obtain images

of the knee if the patient has a cast on the ankle of the

same leg, and patients with limited ankle mobility may

find it difficult or impossible to insert their leg. Finally,

limited hip mobility can make it uncomfortable for a

patient to separate the legs sufficiently to place one leg

i n the magnet while the other rests on the floor.

The field of view of extremity MR can be no larger than

16 cm, which is smaller than a conventional scanner.

This means that the system truncates the visualization

of structures such as the quadriceps or Achilles tendon.

It is also not possible to view the entire hand or foot in

a single set of images. If the site of pain is localized to,

for example, the calcaneus region or the ball of the

foot, this is not a problem. However, the scanner is not

http://www.mghradrounds.org/clientuploads/may_2009/may_2009.pdf?PHPSESSID=532207e8d6c2f6cd9d54d62476893009


suitable for diagnosis of patients with extensive tumor

involvement because it is necessary to visualize the

whole foot in these patients.

Procedure

Patients sit or recline on an ergonomically designed

chair, positioned so that the appropriate limb is

comfortably resting inside the bore of the extremity MR

scanner. Patients find the extremity MR scanner less

intimidating than a conventional MR scan because the

experience is not claustrophobic and the scanner is

relatively quiet. This sense of comfort helps patients

remain still and reduces problems due to motion

artifact. Therefore, it could be excellent for pediatric

patients. Scan duration is 30-35 minutes.


Neuroimaging at 3T with Phoenix gallery

Magnetom World is a great source of information for MRI users they have always provided cutting edge techniques and resource for the community check them out.  Go to the  Phoenix  gallery for protocol help.  copy images right to your Siemens workstation.

Contrast Enhanced MR
Angiography (ce-MRA)
Superior gradient performance coupled with iPAT
parallel imaging allows ultrashort TR/TE exams
with high SNR. Siemens is a world leader in
gradient technology. This is of particular benefit
in angiographic applications in which the smallest
possible TE is desired to reduce spin dephasing
caused by field inhomogeneities and acceleration.
Routine Neuroimaging
The increased signal at 3 Tesla allows the
acquisition of ultra-fast neuro-anatomical images.
A 6 minute brain examination illustrates the point.
Contrast Enhanced MR
Angiography (ce-MRA)
Superior gradient performance coupled with iPAT
parallel imaging allows ultrashort TR/TE exams
with high SNR. Siemens is a world leader in
gradient technology. This is of particular benefit
in angiographic applications in which the smallest
possible TE is desired to reduce spin dephasing
caused by field inhomogeneities and acceleration.
MR Angiography
The routine 3D ToF MR angio sequence yields
excellent results with good visualization of secondary
and tertiary blood vessels. The increased T1 at 3T
also leads to improved background suppression in
time-of-flight techniques.
MRA of  Cerebral Arteries

Sunday, May 24, 2009

MRI guided radiation therapy (MRIgRT)


At the UMC Utrecht, The Netherlands, we have constructed a prototype MRI
accelerator. The prototype is amodified 6MVElekta (Crawley, UK) accelerator
next to a modified 1.5 T Philips Achieva (Best, The Netherlands) MRI system.
From the initial design onwards, modifications to both systems were aimed to
yield simultaneous and unhampered operation of the MRI and the accelerator.
Indeed, the simultaneous operation is shown by performing diagnostic quality
1.5 T MRI with the radiation beam on. No degradation of the performance of
either system was found. The integrated 1.5 T MRI system and radiotherapy
accelerator allowsimultaneous irradiation andMRimaging. The full diagnostic
imaging capacities of the MRI can be used; dedicated sequences for MRIguided
radiotherapy treatments will be developed. This proof of concept opens
the door towards a clinical prototype to start testing MRI-guided radiation
therapy (MRIgRT) in the clinic.


The integrated 1.5 T MRI system and radiotherapy accelerator allow simultaneous irradiation
and MR imaging. Both systems operate independently. The full diagnostic imaging capacities
of the Philips MRI can be used; dedicated sequences for guiding radiotherapy treatments will
be developed.
This proof of concept opens the door towards a clinical prototype to start testing MRIguided
radiation therapy (MRIgRT) in the clinic.

Acknowledgments
This research is supported by the Technology Foundation STW (applied science division of
NWO and the technology programme of the Ministry of Economic Affairs) and by the Dutch


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