FDG-PET/CT-guided rebiopsy may find clinically unsuspicious transformation of follicular lymphoma.

Aim: The purpose of the study was to evaluate the clinical impact of fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) followed by a new biopsy from the site with maximum standardized uptake value (SUVmax) in case of high maximal SUV values, in detecting clinically unsuspected histologic transformations (HT) of follicular lymphoma (FL).

Methods: This retrospective study included all the patients who had undergone FDG-PET/CT during primary diagnosis or relapse of FL between 2010 and 2020 at Oulu University Hospital.

Results: The diagnosis changed from an indolent disease to a transformed lymphoma in >10% (7/63) of the patients who underwent diagnostic FDG-PET/CT.

Preoperative localization of the sensorimotor area using independent component analysis of resting-state fMRI.

Analysis of resting-state functional magnetic resonance imaging (fMRI) data is based on detecting low-frequency signal fluctuations in functionally connected brain areas. These synchronous fluctuations in resting-state networks have been observed in several studies with healthy subjects. In this study, we explored if independent component analysis (ICA) can be used to localize the sensorimotor area from resting-state fMRI data in patients with brain tumors.

Enhancement of brain tumors in 0.23-T low-field MRI: comparison of edema attenuated inversion recovery (EDAIR) sequences with T1-weighted sequence.

Rationale And Objectives: The aim of this study is to explore whether edema attenuated inversion recovery (EDAIR) sequences could be used to improve tumor contrast in contrast-enhanced low-field 0.23-Tesla magnetic resonance imaging (MRI) using 0.1 mmol/kg of gadolinium-based contrast agent.

Cerebral edema attenuated inversion recovery MR sequence in low magnetic field: a feasibility study.

Rationale And Objectives: Minimally invasive neurosurgery requires methods to specify surgical boundaries of target tissue, such as brain tumors. This study investigated technical possibilities and clinical usefulness of adapting edema attenuated inversion recovery (EDAIR) pulse sequences to suppress magnetic resonance signal from cerebral edema in brain tumor patients.

Materials And Methods: A resistive 0.

Effect of brain surgery on auditory and motor cortex activation: a preliminary functional magnetic resonance imaging study.

Objective: The effect of glioma removal on blood oxygen level-dependent (BOLD) functional magnetic resonance imaging (fMRI) activation has not been widely documented. The aim of this preliminary study was to observe the effect of tumor resection on BOLD fMRI of the auditory and motor cortices.

Methods: Seven patients with gliomas underwent preoperative and early postoperative BOLD fMRI, and five of them underwent additional late postoperative BOLD fMRI.

Endplate degeneration observed on magnetic resonance imaging of the lumbar spine: correlation with pain provocation and disc changes observed on computed tomography diskography.

Study Design: One hundred and three lumbar intervertebral discs (L3/4-L5/S1) of 36 patients with low back pain were examined with computed tomography (CT) diskography and magnetic resonance imaging (MRI).

Objectives: To determine whether lumbar endplate degeneration correlates with the degree of disc degeneration or disc rupture and to determine if there is an association between pain provocation during diskography and lumbar endplate degeneration.

Summary Of Background Data: There have been numerous attempts to explain the pathogenesis of pain provocation during diskography, but the possibility of endplate degeneration as a source of pain has not been widely assessed.