MRI: Page 22

Functional MRI shows brain activity prompted by fanaticism

By Kate Madden Yee

Functional MRI shows brain activity sparked by fanaticism, according to a presentation to be delivered at the upcoming RSNA meeting.

November 21, 2023

The contrast of winning and losing in the 'good fanatic brain.' The image shows in warm colors the activity related to a significant victory. The blue scale represents the activation related to a significant loss; this pattern is congruent with the Mentalization Network, which suggests a rationalization process of the pain evoked by the losing scenario. Image and caption courtesy of the RSNA.

Morphological markers culled from MRI exams help diagnose autism

By Kate Madden Yee

Morphological markers culled from diffusion tensor MRI brain scans using an AI algorithm can help accurately diagnose autism in young children.

November 21, 2023

The top five white matter features (region pairs) in a single image. The color map is: yellow = superior cerebellar peduncle (R)/uncinate fasciculus (R), orange = column and body of fornix/posterior corona radiata (L), purple = splenium/retrolenticular internal capsule (L), blue = dorsal cingulum (L)/cres of fornix (R), green = splenium/external capsule (R). Image and caption courtesy of the RSNA.

CEM comparable to MRI in asymptomatic women

By Amerigo Allegretto

Contrast-enhanced mammography (CEM) is on par with MRI in breast cancer screening for asymptomatic women, according to recent research.

November 15, 2023

A 47-year-old female participant with a suspicious mass noted at screening tomosynthesis and subsequent diagnostic ultrasound was recruited for contrast-enhanced mammography (CEM) and MRI. (A) No abnormality was noted on the conventional 2D mammogram showing dense breast tissue. A mass (arrows) was clearly observed on (B) the recombined CEM image and (C) the MRI scan. Both images show marked background parenchymal enhancement. Biopsy confirmed a 1.1-cm grade 2 invasive ductal carcinoma (estrogen receptor- and progesterone receptor-positive, human epidermal growth factor receptor 2-negative). Image courtesy of Radiology.

MRI most cost-effective way to evaluate ED patients with dizziness

By Kate Madden Yee

MRI is the most cost-effective imaging modality for evaluating patients presenting to the emergency department (ED) with dizziness, research suggests.

November 9, 2023

Features found on MRI may predict liver cancer recurrence after surgery

By Kate Madden Yee

An algorithm based on MRI features could help clinicians predict liver cancer recurrence after patients have undergone liver resection, researchers have found.

November 8, 2023

Preoperative axial extracellular contrast agent-enhanced (A-E) MRI and (F-H) follow-up CT images in a 71-year-old male patient with chronic hepatitis B and a serum neutrophil count of 4.2 × 109/L. A 5.6-cm mass with a 1.9-cm satellite nodule was detected in segments V and VIII. (A) The mass (asterisks, A-E) shows mild-to-moderate hyperintensity on T2-weighted images, (B) hypointensity on T1-weighted noncontrast-enhanced images, (C) less than 50% hyperenhancement on late arterial phase images, (D) nonperipheral washout and incomplete enhancing capsule on portal venous phase images, and (E) marked diffusion restriction on diffusion-weighted images (b = 800 sec/mm2). The mass was confirmed at histopathologic analysis as moderately differentiated hepatocellular carcinoma with microvascular invasion. With an advanced-stage recurrence after resection score of 19.8 points (4.2 + 5.6 + 10), this patient was assigned to the high-risk group (≥15 points) for advanced-stage recurrence. At follow-up, (F) noncontrast-enhanced, (G) arterial phase, and (H) portal venous phase CT images acquired at day 70 after surgery show multifocal intrahepatic recurrence and tumor thrombus in the left portal vein (black arrow, H). Images and caption courtesy of the RSNA.

Playkits develop role in easing kids' anxiety over MRI scans

By Edna Astbury-Ward, PhD

Giving young children a playkit that uses both virtual and augmented reality appears to reduce anxiety about this procedure, U.K. researchers report.

November 8, 2023

A smartphone is a key component of the playkit devised by the Sheffield team. Photo courtesy of DYR in collaboration with Dubit UK.

MRI radiomics show promise for identifying Ki-67 breast cancer

By Kate Madden Yee

MRI radiomics show a high diagnostic accuracy for predicting Ki-67 expression in breast cancer, researchers have found.

November 6, 2023

Breast Cancer 400

MRI superior in characterizing high-risk adnexal lesions

By Amerigo Allegretto

MRI has advantages over transvaginal ultrasound when characterizing adnexal lesions based on O-RADS.

October 30, 2023

Ovarian Cancer 400

MR proton density fat fraction imaging helps predict liver health

By Kate Madden Yee

MR proton density fat fraction imaging helps predict liver health, researchers have found.

October 25, 2023

Liver Anatomy 400

How does menopause affect women's cerebral blood flow?

By Kate Madden Yee

Arterial spin labeling MRI shows that alterations in women's cerebral blood flow begin during perimenopause and may be due to an increased burden of white-matter hyperintensities.

October 20, 2023

Beware risk of adverse events associated with GBCAs

By Kate Madden Yee

Risks associated with gadolinium-based contrast agents (GBCAs) differ by drug, and clinicians would do well to educate themselves about these differences.

October 17, 2023

Prostate MRI acquisition protocols vary widely around the world

By Kate Madden Yee

Global prostate MRI acquisition parameters vary widely around the world, researchers have reported, and the variation isn't good news for quality patient care.

October 11, 2023

Prostate 3 D 400

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