Thursday, December 30, 2010

MRI Shielding Installation

Tags: RF Shield, LED Lighting, Backlit Graphic Panel, Ferromagnetic Detector

Ferromagnetic Detector for Safe MRI Practice

Tags: Ferromagnetic Detector, MRI Safety

Friday, September 10, 2010

FDA updates warning labels on gadolinium contrast

Tags: Gadolinium, Gd, FDA

U.S. Food and Drug Administration

Friday, June 25, 2010

Gadolinium & Nephrogenic Systemic Fibrosis

Tags: Nephrogenic Systemic Fibrosis, NSF, ACR, Gadolinium, Gd


Saturday, June 5, 2010

iPad for Imaging-guided Surgery

iPad can be used to access images from the PACS system for imaging-based surgical guidance. Wrapped in a sterile wrapper around the iPad, the surgeons are able to use touch gestures to navigate through 3D surface rendered images to help guide their scalpel. See for yourself this latest innovation in radiology and mobile technology.

Tags: iPad, 3D image, surgery, radiology, PACS

Tuesday, May 11, 2010

MRI Tragedy

Another MRI tragedy that leads to the death of a field engineer...

Tags: GE Medical Systems, Signa HDX 1.5T, blower motor

Monday, May 10, 2010

PoleStar N30 Surgical MRI System

PoleStar iMRI Navigation Suite: An integration of surgical navigation and intra-operative imaging for neuro-oncologic surgery.

Tags: iMRI, surgical intervention, neuro-oncologic surgery, PoleStar, Medtronic

Sunday, May 2, 2010

Brain MRI (Imaging Planes)

Tags: Brain MRI, imaging plane, bicommissural line, fastigium, 4th ventricle, sella turcica, corpus callosum

P.M. Parizel et al. Magnetic Resonance Imaging of the Brain. In: P. Reimer et al. (eds.), Clinical MR Imaging. Springer-Verlag: Berlin Heidelberg, 2010; 108-194.

Friday, April 9, 2010

MRI-Conditional Pacemakers & Leads from BIOTRONIK

Tags: MRI, cardiac pacemaker, implantable cardiac device

Cardiac Pacemaker Designed for MRI Safety

Tags: MRI, cardiac pacemaker, implantable cardiac device, SureScan, Advisa MRI Pacemaker, EnRhythm MRI Pacemaker, CapSureFix MRI Lead

Cardiac Pacemaker & MRI

Tags: MRI, cardiac pacemaker, implantable cardiac device, EMI, electromagnetic interference

Tuesday, March 30, 2010

Ax Flies at MRI Fire

A firefighter chopping a hole in the roof of a burning medical building Sunday had his ax ripped from his hands and through the roof by the force of a magnet in an MRI machine below...

Tags: MRI fire, firefighter, Ax

Sunday, March 28, 2010

MRI Safety Alert

Magnet failed to quench as the quench button was pressed...

Tags: Magnet quench, quench button, fire

Saturday, March 13, 2010

SEGMENT (Medical Image Analysis Software) for Mac OS X

Click here for details.

Tags: Cardiac MRI, application software, SEGMENT

Friday, February 26, 2010

No Fear MRI

Useful information for both MRI techs & patients: No Fear MRI

Tags: Claustrophobia, successful MRI

Friday, February 12, 2010

7" Forceps Left Inside Patient's Body


MUM Donna Bowett had a routine operation - and doctors left a seven-inch set of forceps inside her. It was only when she had the MRI exam that...


Tags: Forceps, safety

Thursday, February 11, 2010

HONcode Certification


The HONcode is the code of conduct of the Health On the Net Foundation and is applied for voluntary health/medical websites. It was initiated in 1995 and has since grown to become the most widely used and best trusted ethical code for health/medical websites.

This website is certified by Health On the Net Foundation. Click to verify. This site (MRI BLOG) complies with the HONcode standard for trustworthy health information:
verify here.

Tags: HONcode, certification

Tuesday, February 2, 2010

Dynamic Susceptibility Contrast (DSC)

(Click on image to enlarge)

Tags: Cerebral perfusion, dynamic susceptibility contrast, DSC, signal-time curve, concentrative-time curve, arterial input function, AIF, relCBV, rCBF, MTT

Swanson SD. MR Methods to Measure Cerebral Perfusion. In: MR Imaging in White Matter Diseases of the Brain and Spinal Cord. Springer Berlin Heidelberg, 2005; 83-91.

Wednesday, January 27, 2010

New Blood Pool Contrast Agent - Ablavar


There have been quite a number of discussions recently on "Ablavar" - the newly FDA-approved blood pool contrast agent for use in magnetic resonance angiography (MRA) to evaluate aortoilac occlusive disease (AIOD) in adults with known or suspected peripheral vascular disease (PVD). Is anyone out there who has experience in the clinical use of Ablavar willing to share with us the safety and efficacy of this blood pool contrast agent? MRA images using Ablavar, if available, will be awesome and most welcome. The images can be sent to me through email and I'll post them up here for sharing.

Illustrated below is one of the clinical examples of the applicaton of blood pool contrast agent from



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This blog is open to the public and is therefore freely accessible by all internet users. Readers are encouraged to express their comments to any entries posted in this blog. Modification or removal of the comments posted is possible by notifying the author of this site through "CONTACT ME" near the right upper corner of this blog.

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Links to other sites are for information only and this site accepts no responsibility or liability for access to, or the material on, any site which is linked from or to this site.

I will update any changes to the above here in this post, which can be found in the entry labelled with "DISCLOSURE".

Wednesday, January 20, 2010

T1 Values in Infarcted & Noninfarcted Myocardium for Magnevist & MultiHance

Tags: Relaxation time, T1, Inversion time, TI, null point, Gadopentetate, Gadobenate, Magnevist, MultiHance, infarcted myocardium, noninfarcted myocardium

Schlosser et al. Myocardial infarct: depiction with contrast-enhanced MR imaging--comparison of gadopentetate and gadobenate. Radiology (2005) vol. 236 (3) pp. 1041-6.

Null Point for Late Gd Enhancement

Tags: Inversion Time, TI, Gadolinium, Late Gadolinium Enhancement, LGE

Yamrozik JA, Meister J, Geetha R, et al. Combined effects of Gadolinum dosage and delay on myocardial nulling. Journal of Cardiovascular Magnetic Resonance (2007) 9, 477–491.

Tuesday, January 19, 2010

Meniscal Tears

(Click on image to enlarge)

Tags: Meniscus, knee, full-thickness tear


Monday, January 18, 2010

Partial Tears of Achilles Tendon

(Click on image to enlarge)

Tags: Achilles tendon, ankle, partial tears


Sunday, January 17, 2010

New Standard for the Design of MRI Suite

Conceptual Layout of an MRI Suite in line with the 4-Zone Principle Affirmed by the American College of Radiology

(Click on image to enlarge)

(Click on image to enlarge)

An indispensable guide to the design of a contemporary MRI suite (with all the MRI safety requirements properly addressed) can be obtained from the U.S. Department of Veterans Affairs.

Tags: MRI safety, layout plan, 4-zone principle, MRI suite, ferromagnetic screening


Friday, January 15, 2010

Worst Date Ever? ... Dinner & an MRI

An episode from "Parks & Recreation" - The Set Up.
The MRI techs may find the part of video starting from "12:35" interesting. Enjoy!

If video loading is too slow, try the following link:

Tags: MRI, Comedy

Monday, January 11, 2010

Musculoskeletal MRI 101 (II/II)

Tags: Meniscal tears, FSE, echo train length, ETL, echo spacing, T2 decay, signal jump, image blur, magnetization transfer, k-space, artefact

Thursday, January 7, 2010

Future PACS Workstation via Mixed Reality Glasses?

Future PACS workstation via MIxed Reality Glasses? Check this video out from Nokia ( This concept allows you to experience immersion and effortless navigation in an Augmented Reality environment. New types of interactions involving near-to-eye displays, gaze direction tracking, 3D audio, 3D video, gesture and touch. Through these new types of social linkages people will be connected in innovative ways between the physical and digital worlds.

Tags: Mixed Reality, glasses, PACS


Tuesday, January 5, 2010

FDA Warns of Sandbags in MRI Suites

Sandbags that contain metal shavings could pose a hazard in MRI suites, according to an alert issued by the U.S. Food and Drug Administration (FDA).

The FDA issued its warning after a report of a case in which healthcare staff placed a sandbag on a patient's groin to help facilitate hemostasis after a femoral artery puncture procedure. As the study began, the sandbag was pulled into the MRI scanner, damaging the system. The patient was not injured in the incident.

Staff had assumed that the sandbag contained only sand, but upon further investigation it was found to contain ferromagnetic shavings and iron pellets. The sandbag was originally purchased for the hospital's physical therapy department and shouldn't have been brought into the MRI suite, according to the FDA.

The FDA suggests that sites purchase only sandbags that are labeled with the MR Safe or MR Conditional icon. Ferromagnetic sandbags should be appropriately labeled as MR Unsafe to ensure that they aren't brought into the MRI suite, and unlabeled sandbags should not be brought into MRI rooms.

In addition, MRI staff should be educated to screen patients for ferromagnetic objects and should remove patients' blankets and sheets to search for objects. Patient records should be checked before MRI scans for recent procedures that may have required the use of a sandbag, and signs should be placed in visible areas outside the MRI room reminding staff to check for ferromagnetic objects.

Tags: MR safe, MR conditional, sandbag, ferromagnetic


Sunday, January 3, 2010

Encompass Group Voluntarily Recalls Thermoflect Product Line

FOR IMMEDIATE RELEASE – December 26, 2009 – McDonough, GA – Jea R. Gackowski, Encompass Group Corporate Compliance Officer announced today the company is voluntarily recalling the Thermoflect product line for relabeling regarding its use in the MR (Magnetic Resonance) environment.

"We are voluntarily recalling the product line from use in the Magnetic Resonance (MR) environment," Gackowski said. "We are requesting that the Thermoflect blankets and other products not be used in MR conditional or MR compatible environments. We are in the process of sending labels to our customers to be attached per instructions to remind the hospitals that the product line should not be used in the MR environment.

"In the past, we have stated that the Thermoflect product may be used in the MR environment. However, after being informed by the FDA, at this time we will not promote the products for use in the Magnetic Resonance Environment. However, the product is still safe and effective for use in treating hypothermia."

We have been advised by the FDA that a report has been filed of an injury to an (MRI) patient. Several items are under consideration, including all of the blankets used in the MRI environment, of which Thermoflect is one. There is no evidence that the Thermoflect blanket caused the injury but as a precautionary measure we are voluntarily recalling the product line for relabeling.


Tags: Safety, Thermoflect blanket, hypothermia

Saturday, January 2, 2010

Musculoskeletal MRI 101 (I/II)

Tags: MSK, musculoskeletal MRI, protocol, magnetization transfer, magnetization transfer suppression, magic angle effect, tissue contrast, pulse sequences