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May 2011 Briefing - Radiology

May 2011 Briefing - Radiology

Here are what the editors at HealthDay consider to be the most important developments in Radiology for May 2011. This roundup includes the latest research news from journal articles, as well as the FDA approvals and regulatory changes that are the most likely to affect clinical practice.

Effect Estimates May Be Inflated in Biomarker Studies

TUESDAY, May 31 (HealthDay News) -- Biomarker effects are often overestimated in highly cited studies compared to the effects reported in subsequent meta-analyses of the same associations, according to a review published in the June 1 issue of the Journal of the American Medical Association.

Abstract (http://jama.ama-assn.org/content/305/21/2200.short )Full Text (subscription or payment may be required) (http://jama.ama-assn.org/content/305/21/2200.full )Editorial (subscription or payment may be required) (http://jama.ama-assn.org/content/305/21/2229.extract )

Lateral Radiography Can Measure Prevertebral Soft Tissue Width

TUESDAY, May 31 (HealthDay News) -- Use of upright magnetic resonance imaging (MRI) has validated the use of lateral radiography for measuring prevertebral soft tissue (PVST) width, which is dependent on spinal level and gender, according to a study published in the May issue of The Spine Journal.

Abstract (http://www.thespinejournalonline.com/article/S1529-9430%2811%2900253-1/abstract )Full Text (subscription or payment may be required) (http://www.thespinejournalonline.com/article/S1529-9430%2811%2900253-1/fulltext )

Modic Changes Common in Patients With Lower Back Pain

FRIDAY, May 27 (HealthDay News) -- A high prevalence of Modic changes is seen among Spanish patients with chronic lower back pain (LBP) for whom magnetic resonance imaging (MRI) has been prescribed, according to a study published in the May issue of The Spine Journal.

Abstract (http://www.thespinejournalonline.com/article/S1529-9430(11)00222-1/abstract )Full Text (subscription or payment may be required) (http://www.thespinejournalonline.com/article/S1529-9430(11)00222-1/fulltext )

Contact With Drug Industry Linked to Positive Attitudes

WEDNESDAY, May 25 (HealthDay News) -- The extent of contact that medical students have with the pharmaceutical industry is associated with positive attitudes about marketing, according to a review published online May 24 in PLoS Medicine.

Abstract (http://www.plosmedicine.org/article/info%3Adoi%2F10.1371%2Fjournal.pmed.1001037#abstract1 )Full Text (http://www.plosmedicine.org/article/info%3Adoi%2F10.1371%2Fjournal.pmed.1001037 )

More Scans for Back Pain by Doctors Who Bill for MRI

WEDNESDAY, May 25 (HealthDay News) -- Patients with low back pain in the care of primary care physicians or orthopedists who own or lease magnetic resonance imaging (MRI) equipment are more likely to receive an MRI, according to a study published online April 21 in Health Services Research.

Abstract (http://onlinelibrary.wiley.com/doi/10.1111/j.1475-6773.2011.01265.x/abstract )Full Text (subscription or payment may be required) (http://onlinelibrary.wiley.com/doi/10.1111/j.1475-6773.2011.01265.x/full )

Use of CCTA Screening Tied to Increased Invasive Testing

TUESDAY, May 24 (HealthDay News) -- Low-risk adults who undergo coronary computed tomographic angiography (CCTA) screening use more medications and undergo invasive coronary procedures, according to a study published online May 23 in Archives of Internal Medicine.

Abstract (http://archinte.ama-assn.org/cgi/content/abstract/archinternmed.2011.204 )Full Text (http://archinte.ama-assn.org/cgi/content/full/archinternmed.2011.204 )Editorial (http://archinte.ama-assn.org/cgi/content/full/archinternmed.2011.205v1 )

CT Fluoroscopy Superior to C-Arm in Disc Herniation

MONDAY, May 23 (HealthDay News) -- Computed tomography (CT) fluoroscopy is clinically more effective and safer than C-arm fluoroscopy for cervical transforaminal steroid injections for treatment of patients with cervical disc herniation, according to a study published in the May issue of The Spine Journal.

Abstract (http://www.thespinejournalonline.com/article/S1529-9430%2811%2900256-7/abstract )Full Text (subscription or payment may be required) (http://www.thespinejournalonline.com/article/S1529-9430%2811%2900256-7/fulltext )

Many Medical Students Lack Confidence in Medical Law

FRIDAY, May 20 (HealthDay News) -- The majority of medical students lack confidence in their knowledge and skills across many areas of medical law, according to a study published online May 16 in the Journal of Medical Ethics.

Abstract (http://jme.bmj.com/content/early/2011/04/13/jme.2010.041566.abstract )Full Text (subscription or payment may be required) (http://jme.bmj.com/content/early/2011/04/13/jme.2010.041566.full )

Limiting Gadolinium Use May Avert Renal Systemic Fibrosis

FRIDAY, May 20 (HealthDay News) -- Following the adoption of restrictive guidelines for gadolinium-based contrast agent (GBCA) administration, no new nephrogenic systemic fibrosis (NSF) cases have been identified in contrast-enhanced magnetic resonance (MR) examinations, even in patients with a low estimated glomerular filtration rate (eGFR), according to a study published online May 17 in Radiology.

Abstract (http://radiology.rsna.org/content/early/2011/04/22/radiol.11102340.abstract )Full Text (subscription or payment may be required) (http://radiology.rsna.org/content/early/2011/04/22/radiol.11102340.full )

In Vivo 3-D Cervical Spine Kinematics Demonstrated

THURSDAY, May 19 (HealthDay News) -- In vivo three-dimensional (3-D) magnetic resonance imaging (MRI) kinematics of the cervical spine during head rotation identifies differences in cervical motion between patients with cervical spondylosis and healthy controls, according to a study published in the May 1 issue of Spine.

Abstract (http://journals.lww.com/spinejournal/Abstract/2011/05010/In_Vivo_Three_Dimensional_Kinematics_of_the.4.aspx )Full Text (subscription or payment may be required) (http://journals.lww.com/spinejournal/secure/pages/purchase.aspx?an=00007632-201105010-00004 )

ASIR Produces Acceptable CT Images at Low Radiation Dose

MONDAY, May 16 (HealthDay News) -- Acceptable quality chest computed tomography (CT) images without artifacts that may affect diagnostic confidence can be achieved at 40 mAs using adaptive statistical iterative reconstruction (ASIR), according to a study published in the May issue of Radiology.

Abstract (http://radiology.rsna.org/content/259/2/565.abstract )Full Text (subscription or payment may be required) (http://radiology.rsna.org/content/259/2/565.full )

Arthritic Bone Erosions Can Be Detected by Ultrasound

FRIDAY, May 13 (HealthDay News) -- Most arthritic bone erosions seen on ultrasound (US) imaging are cortical breaks, which are detected on micro-computed tomography (micro-CT) scans, according to a study published in the May issue of Arthritis & Rheumatism.

Abstract (http://onlinelibrary.wiley.com/doi/10.1002/art.30285/abstract )Full Text (subscription or payment may be required) (http://onlinelibrary.wiley.com/doi/10.1002/art.30285/full )

Use of Breast Intensity-Modulated Radiation on Rise

WEDNESDAY, May 11 (HealthDay News) -- The use of intensity-modulated radiation therapy (IMRT) rose steeply from 2001 to 2005, substantially increasing the cost of breast cancer radiation, according to research published online April 27 in the Journal of the National Cancer Institute.

Abstract (http://jnci.oxfordjournals.org/content/early/2011/04/27/jnci.djr100.abstract )Full Text (subscription or payment may be required) (http://jnci.oxfordjournals.org/content/early/2011/04/27/jnci.djr100.full )

Medical Education Participants Recognize Funding Bias

WEDNESDAY, May 11 (HealthDay News) -- Although most medical professionals believe that commercial funding of continuing medical education (CME) introduces bias, most are not willing to pay higher fees to offset or eliminate such funding sources, according to a study published in the May 9 issue of the Archives of Internal Medicine.

Abstract (http://archinte.ama-assn.org/cgi/content/abstract/171/9/840 )Full Text (subscription or payment may be required) (http://archinte.ama-assn.org/cgi/content/full/171/9/840 )Editorial (subscription or payment may be required) (http://archinte.ama-assn.org/cgi/content/extract/171/9/847 )

CT Pulmonary Angiography Tied to Embolism Overdiagnosis

TUESDAY, May 10 (HealthDay News) -- In patients with pulmonary embolism (PE), computed tomographic pulmonary angiography (CTPA) is associated with overdiagnosis reflected by increasing incidence, limited change in mortality, and reduced case fatality, according to a study published in the May 9 issue of the Archives of Internal Medicine.

Abstract (http://archinte.ama-assn.org/cgi/content/abstract/171/9/831 )Full Text (subscription or payment may be required) (http://archinte.ama-assn.org/cgi/content/full/171/9/831 )Editorial (subscription or payment may be required) (http://archinte.ama-assn.org/cgi/content/extract/171/9/837 )

Observing Children With Head Injury Reduces CT Scan Use

MONDAY, May 9 (HealthDay News) -- Clinical observation is associated with reduced computed tomography (CT) use among children with minor blunt head trauma, according to a study published online May 9 in Pediatrics.

Abstract (http://pediatrics.aappublications.org/cgi/content/abstract/peds.2010-3373v1 )Full Text (http://pediatrics.aappublications.org/cgi/reprint/peds.2010-3373v1 )

True Interval Breast Cancers May Have Aggressive Features

MONDAY, May 9 (HealthDay News) -- True and missed interval cancers are more likely to have a higher grade and stage compared with screen-detected breast cancers, and true interval cancers have additional adverse prognostic features, according to a study published online May 3 in the Journal of the National Cancer Institute.

Abstract (http://jnci.oxfordjournals.org/content/early/2011/05/03/jnci.djr138.abstract )Full Text (subscription or payment may be required) (http://jnci.oxfordjournals.org/content/early/2011/05/03/jnci.djr138.full )

Breast Augmentation Blurs Mammography Results

FRIDAY, May 6 (HealthDay News) -- Mammographic findings fail to differentiate between benign and malignant carcinoma microcalcifications after autologous fat injection for breast augmentation, according to a study published in the April issue of Plastic and Reconstructive Surgery.

Abstract (http://journals.lww.com/plasreconsurg/Abstract/2011/04000/Clinical_Analyses_of_Clustered_Microcalcifications.33.aspx )Full Text (http://journals.lww.com/plasreconsurg/Fulltext/2011/04000/Clinical_Analyses_of_Clustered_Microcalcifications.33.aspx )Editorial (subscription or payment may be required) (http://journals.lww.com/plasreconsurg/Citation/2011/04000/Discussion__Clinical_Analyses_of_Clustered.34.aspx )

Ultrasound Viable Option to Radiography in Acute Dyspnea

FRIDAY, May 6 (HealthDay News) -- For most pulmonary diseases causing dyspnea, ultrasonography and radiography demonstrate high concordance, but ultrasound is more accurate at identifying free pleural effusion, according to a study published in the May issue of Chest.

Abstract (http://chestjournal.chestpubs.org/content/139/5/1140.abstract )Full Text (subscription or payment may be required) (http://chestjournal.chestpubs.org/content/139/5/1140.full )

Cerebral Cortex Enlargement Found in Children With Autism

WEDNESDAY, May 4 (HealthDay News) -- Children with autism spectrum disorder (ASD) have generalized cerebral cortical enlargement with disproportionate enlargement in temporal lobe white matter, according to a study published in the May issue of the Archives of General Psychiatry.

Abstract (http://archpsyc.ama-assn.org/cgi/content/abstract/68/5/467 )Full Text (subscription or payment may be required) (http://archpsyc.ama-assn.org/cgi/content/full/68/5/467 )

CT Colonography More Sensitive in Detecting Cancer

TUESDAY, May 3 (HealthDay News) -- Computed tomographic (CT) colonography is more sensitive than optical colonoscopy (OC) in detecting colorectal cancer, especially when both cathartic and tagging agents are combined in the bowel preparation, according to a meta-analysis published in the May issue of Radiology.

Abstract (http://radiology.rsna.org/content/259/2/393.abstract )Full Text (subscription or payment may be required) (http://radiology.rsna.org/content/259/2/393.long )

Efficacy of Stereotactic Body Radiation Therapy Unclear

TUESDAY, May 3 (HealthDay News) -- Though stereotactic body radiation therapy (SBRT) is currently used as a treatment for various solid malignant tumors, there is a lack of evidence confirming its effectiveness and safety, according to a review published online May 2 in the Annals of Internal Medicine.

Abstract (http://www.annals.org/content/early/2011/05/02/0003-4819-154-11-201106070-00343.abstract )Full Text (http://www.annals.org/content/early/2011/05/02/0003-4819-154-11-201106070-00343.full )