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Archive for the ‘MRI’ Category

People with back pain/problems can now skip an MRI Scan, and save the MRI Cost, a study report

MRI machine

In pain clinics, steroid shots are quite common for patients with back-pain; about the MRI cost back scans, with contrast-agent – the rates are high; in care-units, physicians routinely order an MRI scan, prior the therapy.

An MRI scanner uses powerful magnets for more detailed images, for internal anatomy and physiology; and therefore the MRI machine costs are high; would vary from one supplier to the other, per different product attributes; and, similarly for the procedures, about MRI cost brain scans, back, knee, or more – it would vary for, with and without contrast-enhanced procedures.

And, if you go through world-wide statistics, you would realize, be it MRI scan cost in US, and/or other countries, the figures may not be that pocket-friendly, for the patients; Dr. Steven Cohen (Johns Hopkins University School of Medicine) says, $1,500 each for the scans is not justified, and not necessary when the imaging offers a little chance to avoid a procedure (citing steroid injections from the doctors for back-pain patients), lessen complexities, or ameliorate outcomes.

Of the study results (led by Dr. Steven Cohen), the research team found that about 132 patients that have had an MRI before were being given steroid injections, by doctors, without even clarifying the test-results.

He added further that, by skipping the procedure (in advance), it could save patients significant MRI cost, and time; please refer the Archives of Internal Medicine, for more studies and observations of Dr. Steven Cohen in patients with sciatica and other.

We understand, the higher MRI cost for back, knee or brain scan definitely is a matter of concern for many out there; but then, the non-invasive imaging approach is safer than other imaging methods (X-ray, CT etc.) that use ionizing radiation.

It is like, ‘too-much’ of unneeded examinations (any) always add-up to medical bills, and that should be avoided, by the doctors.

So, be it MRI cost knee, brain, back or other: for the procedures, or information about new and refurbished equipment providers, MRI Machine Costs - people of the healthcare community can always be of good help, and you can join the MedicExchange community, for more knowledge and information.

The tremendous scope the non-invasive MRI technology has, is not new to any; let us take a quick peek, again, but then, for more detailed versions, in the coming year!

MRI Scanner

For people in the healthcare sector, the term MRI Scans or MRI Scanning (Magnetic Resonance Imaging scan) is not at all new; when the healthcare sector is growing like anything, with new booming technologies, for care and treatment, MRI screening definitely is preferred more than others of the slot (CT, X-Ray), to keep patients away from ionizing radiation effects.

And then, those who joined late, about the technology (during MRI screening), nuclear magnetic resonance/reverberations are being used to create two-dimensional/three-dimensional proton-density images, to visualize internal body structures, viz. muscles, bones, organs etc.

Well, we all know the power of magnet, and then superconducting magnets in MRI scanners are quite common, for various medical applications; gone are the days, when without knowing the main cause of diseases in people, the treatments were used to be given, and the results then were increased death rate; but, with the emerging need of the market, and with the upsurge of imaging technology, various medical imaging approaches in Radiology definitely have given a sign of hope for the patients, for early detection of disorders/diseases that patients are being affected with.

Be it human anatomy, or physiology, the non-invasive MRI scanning definitely helps; whether an MRI scan head/brain, knee, or MRI scan breast – everything is safe with/for a patient, with ‘no-ionizing’ radiations, involved.

Yes, be it for a complex human brain anatomy, ultra-high field MRI scan is always there, for subtle brain details; MRI scan brain – is common for patients with the following – dizziness, hearing loss, headaches etc.

And then, about MRI scan knee – for knee pain/osteoarthritis, joint injuries, and more; but, then, prior any MRI scan, you definitely will be checked for electronic devices/implants and other ferromagnetic devices, due to the super-conducting magnets, and associated electronic-magnetic fields.

The topic about magnetic resonance imaging MRI Scan Technology can never end, as we know well about the scope the domain has, in the healthcare sector.

So, stay tuned for more on MRI scans, and everything related with the magnetic resonance imaging technology!

Patients with implantable cardioverter defibrillator (ICD) and/or cardiac pacemakers should no longer worry going for MR imaging, for various medical conditions that they have: a study report

The study overruled following concerns: movement of device inside the body (due to MRI electromagnetic radiation/waves); device heating up, and affecting/burning tissues; device malfunctioning etc.!

Cardiac pacemaker

With specific procedures require to be followed – patients with newly implanted cardiac devices can definitely undergo MR imaging (securely), for cancer and other disorders/irregularities. (Courtesy: Johns Hopkins University)

Defibrillators help to restore normal rhythm of the heart, during fibrillation of heart muscles; on the other, the battery-powered cardiac pacemaker, embed under skin provides normal heartbeat (timed electrical pulses) stimulating the muscle, during specific heart conditions.

For specific MRI procedures – pacemakers produced in 1999 (or later), and defibrillator in 2000 (or later), with cardiologist and other skilled professionals to program the device, to make it MRI-safe, and observe the heart rhythm during the scan, will do!

Of various patients (with implanted cardiac devices – either cardiac pacemaker or defibrillator) that were studied by, no significant issues were reported after they have had MRI done (except for less than 1% of subjects).

Researchers did both during MRI examination: turned the device off, and turned down the sensitivity of the equipment to electromagnetic fields; study authors found the device being set again (reset to default settings), and/but this did not cause harm to any of the patients with implanted cardiac devices that were scanned through.

No patient was required cardiac device replacement, as the devices were re-programmed after the process (MRI) was successfully done on all of them.

Experts say, during an MRI, the study required skilled nurse and Electro-physiologists to tackle any emergency, and due to extra resources required for it, not all care facilities would be able to manage the process (MR imaging) on patients with implanted cardiac devices.

Heart devices compatible with MRI (nowadays) are widely available from various manufacturers; stay tuned with MedicExchange for details about companies/vendors with MRI-safe cardiac devices, and other related!

MRI is a practicable approach for chemotherapy response monitoring for breast cancer; know it a bit more!

Magnetic resonance imaging is an imaging approach, where strong magnetic fields/radio-waves are utilized for cross-sectional images of internal structures and organs of the body.

The technology is practicable for a variety of medical conditions – tumors, cysts, irregularities of the brain/spinal cord, joint injuries, uterine abnormalities etc.

We know already about mammography, for early detection of breast cancers in women, where x-ray is used to identify and locate the tumors, and for irregularities in the female breast.

And, magnetic resonance imaging of the breast, is one of its kind; the technology does not involve ionizing radiation, and is safe for women; it is often used for determination of ruptured silicone breast implants.

An MRI of the breast is feasible for various conditions that other imaging modalities are unable for, though it is an auxiliary tool, and not a substitute for ultrasound imaging or mammography.

For women that have family history of breast cancer, MRI can be an appropriate diagnostic approach; by looking at the family history that any patient has, doctors can determine whether the MRI approach is relevant for them.

For women with a history of lobular carcinoma in situ, a recent study substantiated the effectiveness of breast MRI, as the technology enhanced cancer detection rate in them.

When a patient is newly diagnosed with breast cancer, the extent of cancer and its effect on underlying muscles can be determined with an MRI; for other cancers in the same and opposite breast are even possible through it; cancer spread can be ascertained through irregular lymph node in the underarm.

Irregularities shown on other imaging modalities, when cannot be sufficiently assessed, singly, an MRI facilitates for to surely establish the results for biopsies and related.

In most of the cases with chemotherapy for breast cancer, an MRI is often utilized for to assess effectiveness of the therapy to ascertain presence of tumor, after the process.

For more about various imaging modalities, new medical innovations, technology vendors and related – stay connected with MedicExchange!

MRI is an imaging approach, where strong radio-waves/magnetic fields are used for cross-sectional imaging of internal body structures and organs.

Cardiac MRI

MRI scan is feasible for innumerable medical conditions, viz. cysts, tumors in various body parts; joint irregularities and injuries; abnormalities of the brain/spinal cord; liver/abdominal organs, uterine abnormalities etc.

Besides, magnetic resonance imaging is even practicable for images of heart, when it is beating; both moving and still images of the heart/blood vessels are possible through the process.

In comparison to a CT scan, or X-ray imaging – an MRI scan does not involve ionizing radiation; contrast agents – magnetically active constituents are often used for to show abnormalities/internal body structures, in a more distinct manner.

Cardiac MRI is often performed for function and structure of the heart, in a patient, for cardiac disorders/irregularities; patients with cardiac tumors, heart failure, or that have heart valve disease/congenital heart defects, coronary artery disease and related are diagnosed/assessed through cardiac MRI sequences.

During cardiac MRI, contrast agent is used for to enhance visibility of heart/blood vessels; people with kidney/liver disorders are kept away from using a contrast agent, to avoid complications.

For different types and brands of MRI machines from equipment manufacturers/suppliers for cardiac applications and related, stay connected with MedicExchange!

ADV bubbles may alleviate clinical high-intensity focused ultrasound ablation, by lessening the therapy time, and furnish imaging response of the thermal treatment.

Ultrasound-assisted Laser Thermal Ablation_Goiter

Acoustic droplet vaporization (ADV) is a procedure to utilize ultrasound to phase-transition/transform liquid droplets (super-heated) into gas bubbles; the bubbles can be put in use for following and more – drug deliverance, occlusion therapy, aberration correction etc.

ADV demonstrates hope for spatial control, and increased-rate of thermal lesion production; the research objective was to evaluate whether microbubbles produced by acoustic droplet vaporization could augment high-intensity focused ultrasound thermal ablation, by increasing and managing topical energy absorption.

Thermal lesions were generated in phantoms (tissue-mimicking) through concentrated ultrasound in degassed water; through with T2-weighted magnetic resonance imaging, and apparent shift in optical opacity, the average lesion volume was gauged by.

More to that, in vivo high-intensity focused ultrasound lesions were produced in a canine liver, prior and after an intravenous injection (droplets) with an identical acoustic setting.

Of results, in comparison to phantoms devoid of droplets, thermal lesions were observed the most in phantoms with droplets; the mean lesion volume with a 2-second high-intensity focused ultrasonic approach in phantoms with droplets was equal to that through 5-second exposition in phantoms, devoid of droplets.

The mean lesion volumes with and otherwise droplets were equated through, in the in-vivo study; the form of acoustic droplet vaporization bubbles imaged with ultrasound (B-mode) was identical to the real lesion shape, as estimated optically and by MR approach.

Conclusion: ADV bubbles may alleviate clinical high-intensity focused ultrasound ablation, by bringing down therapy time, and furnish imaging response of the thermal treatment.

Have an insight, for how strong radio-waves and magnetic fields have transformed the healthcare sector, for the diagnostic approach!

MRI system

Magnetic resonance imaging, or well known as MRI is a diagnostic imaging approach, where strong radio-waves and magnetic fields are being utilized for cross-sectional imaging of internal body structures and organs.

Magnetic properties and water content of specific regions of the body vary, and this show effect on the signal identified by an MRI equipment, during the process; this facilitates for to differentiate varied tissues/substances from each other, in the image.

Magnetic resonance imaging is feasible for ‘diverse’ information about body structures that can be acquired through the following – computed tomography, ultrasound or an x-ray; as examination of a joint over MRI facilitates for detailed visualization of cartilage and ligaments that are not plausible through other diagnostic approaches.

Contrast agents – magnetically active constituents are often utilized for to demonstrate irregularities/internal body structures, in a more distinct manner; contrast agents can be grave for patients with kidney disorders.

In majority of the MRI equipment, electric current is allowed through coiled wires for transitory magnetic field about the body of the patient; open MRI devices use invariable magnets.

A receiver/transmitter in the device sends off and receives radio-waves; the signals are put in use for digital images, of regions under study.

Magnetic resonance imaging is practicable for plethora of medical conditions, viz. cysts, tumors and irregularities in varied body parts; joint abnormalities and injuries; specific type of heart issues; irregularities of spinal cord and the brain; disorders of liver/abdominal organs; reasons of pelvic pain, specially in women, like in case of endometriosis and fibroids; and, for varied uterine abnormalities, in women with sterility issues.

Different from a computed tomography or an x-ray approach – magnetic resonance imaging does not involve high-energy radiation, which could show adverse effect on DNA, the genetic information carrier.

No fallouts of MRI scan is known yet, with the temporal exposition to the strong magnetic field; contrast agents used during the process can cause allergic reactions to the patients, under study.

Due to magnetic field generated by the equipment – chances are there that artificial limbs, pacemakers and other fixed devices (that comprise metal) stop functioning, in an appropriate manner; for the same reason, MR-compatible devices are suggested always for an MRI setting.

Other than skin burns through medication patches, and lead wires carelessly placed for an ECG – patient risks associated with the MRI technology is scarce; long-run exposure to the waves can inconsiderably warm the body of the patient.

For more on the MR Imaging technology, and healthcare blog, stay connected with MedicExchange!

MRI evaluation of tumor regression grade and circumferential resection margin prefigure survival outcomes – for extra therapy options prior conclusive surgery.

MRI_Rectal Cancer

The medical research was contributed by Gina Brown (MBBS, MD, FRCR, Dept of Radiology, The Royal Marsden Hospital NHS Trust, Sutton, United Kingdom) and associates.

In neoadjuvant therapy (pre-surgery), therapeutic agents are administered before the main treatment; the research objective was to evaluate pathologic staging and MRI after neoadjuvant therapy for rectal cancer.  (Courtesy: Journal of Clinical Oncology)

About 111 patients with rectal cancer that were treated with therapeutic agents prior the main course enrolled this prospective cohort study; they were evaluated for pathology staging and MRI by T, N and circumferential resection margin status.

Tumor regression grade was even evaluated by MRI; through with Kaplan–Meier estimates, overall survival was appraised.

Cox model was put in use for affiliations amid staging of poor and good responders on survival outcomes and MRI/pathology, after checking for patient characteristics.

MRI-evaluated tumor regression grade hazard ratios were severally substantial for the endurance level, on multivariate analysis; pre-operative MR-indicated circumferential resection margin autonomously prefigured local recurrence; five-year survival for various stages were evaluated.

Conclusion: MRI evaluation of tumor regression grade and circumferential resection margin are imaging markers that prefigure survival outcomes for poor and good responders, for extra therapy options prior planning conclusive surgery.

The novel 3T MR system from Toshiba Medical Systems Corporation has an FDA approval, now!

Vantage Titan 3T

The new technology is devised for enhanced patient compliance, comfort, and for improved radiology workflow.

Noise reduction, wide & open bore (71 cm aperture), feet-first imaging are some of the attributes that 3T MR system has from the industrial leader in medical diagnostic imaging systems.

To scan bariatric patients has been made possible through Toshiba Vantage Titan 3T MR; the noise-reduction technology (PianissimoTM) trims down exam noise by about 90%. Patients can get to have comfortable and easy experience through it – due to fewer motion artifacts, the system ascertains enhanced image quality, and brings down the requirement for repeat/unnecessary examinations.

Atlas SPEEDERTM (incorporated coil technology) of the 3T MR trims down examination time and augments overall experience for the patients.

Advanced, contrast-free MRA approaches make Toshiba unique; they have made contrast-free exams possible for various peripheral vascular diseases (lower legs/extremities), for visualization of smaller vessels (angiography), hemodynamic/functional evaluation and visualization of vascular structures etc.

For more on Toshiba Vantage Titan 3T MR, and other technology offerings from Toshiba Medical Systems Corporation, stay tuned with MedicExchange!

The apparent diffusion coefficient values of infarction lesions have evolution rules with space and time; it is feasible for clinical staging, and treatment guidance.

Cerebral infarction_MRI

The research study was contributed by Jian-Min Shen, Xian-Wu Xia, Wu-Gen Kang, Jian-Jun Yuan and Liang Sheng from the Department of Medical imaging, Taizhou municipal hospital, Taizhou Medical College, Taizhou, PR China.

The research objective was to assess MRI apparent diffusion coefficient for brain infarction – an ischemic kind of stroke, due to disorder in blood vessels; it can be embolic/atherothrombotic. (Courtesy: BioMed Central)

About 98 patients with cerebral infarction encompassed the study, with cases of – acute, hyper, sub acute, steady and chronic infarctions; they were imaged with diffusion weighted imaging, and tradition MRI approach.

Subsequent were calculated by: average apparent diffusion coefficient (ADC) values, relative ADC (rADC) values; and ADC values/rADC values – from the center to the perimeter of the lesion.

Of hyperacute and acute infarction lesion, following lowered evidently – the average ADC values, and rADC values.

For hyperacute and acute stage – rADC values reduced; it advanced with time, and showed as ‘pseudo-normal’ values in about 1 to 2 weeks; then, rADC values crossed the normal level in chronic stage; positive inter-relation was there amid time and rADC values.

In hyperacute and acute lesions, following (ADC, and rADC values) had gradient signs – these lesions augmented from the center to the perimeter; in case of subacute lesions, ADC and rADC values had adverse gradient signs – these abated from the center to the perimeter.

Conclusion: the apparent diffusion coefficient values of infarction lesions have development rules with space and time. The evolution rules – with space and time are feasible for determination of clinical stage, and for treatment guidance, or forecasting.