Towards 24/7 MRI: the effect of routine weekend inpatient MRI scanning on patient waiting times.

Background: Demand for inpatient MRI outstrips capacity which results in long waiting lists. The hospital commenced a routine weekend MRI service in January 2023.

Aim: The aim of this study was to investigate the effect of a limited routine weekend MRI service on MRI turnaround times.

Differential Effects of Dietary versus Exercise Intervention on Intrahepatic MAIT Cells and Histological Features of NAFLD.

Background: Mucosal-associated invariant T (MAIT) cells promote inflammation in obesity and are implicated in the progression of non-alcoholic fatty liver disease (NAFLD). However, as the intrahepatic MAIT cell response to lifestyle intervention in NAFLD has not been investigated, this work aimed to examine circulating and intrahepatic MAIT cell populations in patients with NAFLD, after either 12 weeks of dietary intervention (DI) or aerobic exercise intervention (EI).

Methods: Multicolour flow cytometry was used to immunophenotype circulating and intrahepatic MAIT cells and measure MAIT cell expression (median fluorescence intensity, MFI) of the activation marker CD69 and apoptotic marker CD95.

Visceral obesity with and without metabolic syndrome: incidence and clinical impact in esophageal adenocarcinoma treated with curative intent.

Visceral obesity (VO) and metabolic syndrome (MetS) are risk factors for esophageal adenocarcinoma (EAC); however, their impact on operative and oncological outcomes is unclear. The aim of this study was to determine the incidence of VO and MetS among patients with EAC, and to assess their independent impact on operative and oncological outcomes. A total of 454 consecutive patients undergoing treatment with curative intent were studied.

Accuracy of Opportunistic Bone Mineral Density Assessment on Staging Computed Tomography for Gynaecological Cancers.

: Women with gynecological cancers constitute a high-risk cohort for loss of bone density. International guidance stipulates women undergoing cancer treatments associated with bone loss should have a quantitative assessment of bone density. Access to Dual-energy X-ray Absorptiometry (DXA) is limited.

Improvement in histological endpoints of MAFLD following a 12-week aerobic exercise intervention.

Background: Lifestyle interventions are the primary treatment for metabolic (dysfunction) associated fatty liver disease (MAFLD). However, the histological and cardiometabolic effects of aerobic exercise in MAFLD remain unclear.

Aims: To assess the effects of a 12-week aerobic exercise intervention on histological and cardiometabolic endpoints in MAFLD.

CT-guided Lung Biopsy: Effect of Biopsy-side Down Position on Pneumothorax and Chest Tube Placement.

Background Supine or prone positioning of the patient on the gantry table is the current standard of care for CT-guided lung biopsy; positioning biopsy side down was hypothesized to be associated with lower pneumothorax rate. Purpose To assess the effect of positioning patients biopsy side down during CT-guided lung biopsy on the incidence of pneumothorax, chest drain placement, and hemoptysis. Materials and Methods This retrospective study was performed between January 2013 and December 2016 in a tertiary referral oncology center.

Risk factors for loss of bone mineral density after curative esophagectomy.

Unlabelled: Micronutrient and fat malabsorption and altered enteroendocrine signaling occur after esophagectomy for cancer; however, the impact of malnutrition on bone health in this cohort has not been previously investigated. In this study, the prevalence of osteoporosis increased after curative surgery, associated with disease-specific, treatment-related, and population risk factors.

Purpose: Improved oncologic outcomes in esophageal cancer (EC) have resulted in increased survivorship and a focus on long-term quality of life.

Sarcopenia: Prevalence, and Impact on Operative and Oncologic Outcomes in the Multimodal Management of Locally Advanced Esophageal Cancer.

Objective: The aim of this article was to study the prevalence and significance of sarcopenia in the multimodal management of locally advanced esophageal cancer (LAEC), and to assess its independent impact on operative and oncologic outcomes.

Summary Of Background Data: Sarcopenia in cancer may confer negative outcomes, but its prevalence and impact on modern multimodal regimens for LAEC have not been systematically studied.

Methods: Two hundred fifty-two consecutive patients were studied.

Ultrasound-guided fine needle aspiration of thyroid nodules: factors affecting diagnostic outcomes and confounding variables.

Background The incidence of thyroid cancer is increasing in men and women. Fine needle aspiration (FNA) is an accepted technique to assess thyroid nodules but is associated with a high rate of non-diagnostic sampling. Purpose To assess the diagnostic performance of ultrasound-guided FNA of thyroid nodules and identify factors associated with non-diagnostic sampling.

Delayed Growth in Incidental Pancreatic Cysts: Are the Current American College of Radiology Recommendations for Follow-up Appropriate?

Purpose: To evaluate growth kinetics of asymptomatic small (<2 cm) incidental pancreatic cysts and to assess potential implications of these in the context of current American College of Radiology recommendations.

Materials And Methods: This institutional review board-approved HIPAA-compliant retrospective study with waiver of informed consent included patients with asymptomatic small incidental pancreatic cysts (diameter, 5-20 mm) with two or more magnetic resonance (MR) examinations performed at least 6 months apart at a tertiary institution. The largest cyst dimension was measured on T2-weighted single-shot fast spin-echo images by one of six radiologists (1-3 years of experience) who were trained to measure pancreatic cysts in a similar manner.

Tumor necrosis on magnetic resonance imaging correlates with aggressive histology and disease progression in clear cell renal cell carcinoma.

Objective: The study objective was to correlate the magnetic resonance imaging (MRI) features of clear cell renal cell carcinoma (ccRCC) with the histopathologic features and disease progression.

Methods: Institutional review board approval for this retrospective study was obtained; patient consent was not required. The initial staging MRI scans of 75 patients with histologically confirmed ccRCC were retrospectively reviewed.

Post-endoscopic biliary sphincterotomy bleeding: an interventional radiology approach.

Background: Endoscopic sphincterotomy is an integral component of endoscopic retrograde cholangiopancreatography. Post-sphincterotomy hemorrhage is a recognized complication. First line treatment involves a variety of endoscopic techniques performed at the time of sphincterotomy.

MRI evaluation of acute appendicitis in pregnancy.

In recent years, magnetic resonance imaging (MRI) has become a valuable diagnostic tool for evaluation of acute abdominal pain in pregnancy. MRI offers an opportunity to identify the normal or inflamed appendix as well as a variety of other pathologic conditions that can masquerade clinically as acute appendicitis in pregnant women. Visualization of the normal appendix by MRI virtually excludes the diagnosis of acute appendicitis and may help reduce the negative laparotomy rate in this patient population.

A practical approach to cystic lung disease on HRCT.

A lung cyst is defined as a round parenchymal lucency or area of low attenuation with a thin wall. They are not uncommon findings on high-resolution (HR) thoracic computed tomography (CT) and when identified, they require explanation. The differential diagnosis for diseases characterised by lung cysts is broad ranging from isolated chest disorders to rare multisystem diseases.

FIGO staging system for endometrial cancer: added benefits of MR imaging.

Endometrial cancer is the most commonly diagnosed gynecologic malignancy in the United States. This pathologic condition is staged with the International Federation of Gynecology and Obstetrics (FIGO) system. The FIGO staging system recently underwent significant revision, which has important implications for radiologists.

Evaluation of depth of myometrial invasion and overall staging in endometrial cancer: comparison of diffusion-weighted and dynamic contrast-enhanced MR imaging.

Purpose: To compare the diagnostic performance of diffusion-weighted (DW) magnetic resonance (MR) imaging with that of dynamic contrast material-enhanced (DCE) MR imaging in evaluating the depth of myometrial invasion and overall stage in patients with endometrial cancer.

Materials And Methods: The institutional review board approved this retrospective study; patient consent was not required. From May 2008 to February 2010, 48 women with endometrial cancer underwent preoperative MR imaging, including T1- and T2-weighted imaging, DW MR imaging (b=0 and 800 sec/mm2) and DCE MR imaging.

Evolution of CT pulmonary angiography: referral patterns and diagnostic yield in 2009 compared with 2006.

Background: CT pulmonary angiography (CTPA) is an increasingly popular imaging test for assessing patients with acute chest pain.

Purpose: To evaluate the number of CTPA performed in 2009 compared with 2006 and assess the frequency of pulmonary embolus (PE) versus alternative diagnoses.

Material And Methods: Numbers of CTPA and V/Q scans performed in a six-month period of 2006 and 2009 were established by review of the hospital radiology information system.

Role of MRI in intracavitary brachytherapy for cervical cancer: what the radiologist needs to know.

Objective: Intracavitary brachytherapy has an important role in treating cervical cancer. MRI is the optimal imaging technique to visualize the intracavitary brachytherapy probes and MRI-guided intracavitary brachytherapy is expected to increase significantly over the next 5 years. The purpose of this article is to review what a radiologist needs to know about imaging brachytherapy probes including the MR technique, correct positioning of the probes, and associated complications.

T1-weighted fat-suppressed imaging of the pelvis with a dual-echo Dixon technique: initial clinical experience.

Purpose: To compare the image quality of water-only images generated from a dual-echo Dixon technique with that of standard fast spin-echo T1-weighted chemical shift fat-suppressed images obtained in patients evaluated for pelvic pain with a 1.5-T magnetic resonance (MR) system.

Materials And Methods: The ethics board granted approval for this retrospective study; patient consent was not required.

Magnetic resonance imaging for the evaluation of acute abdominal pain in pregnancy.

The investigation of acute abdominal pain in pregnancy is challenging. The use of ultrasound may be limited due to the patient's change in body habitus and computed tomography is not desirable due to fetal irradiation. Magnetic resonance imaging (MRI) has thus become increasingly popular in the evaluation of such patients, due to its lack of ionizing radiation, multiplanar capability and high contrast resolution.

Magnetic resonance angiography of abdominal vessels at 3 T.

Magnetic resonance angiography (MRA) has evolved significantly since first described in the early 1990s. Unrivaled image quality and freedom from artifacts has made it a reliable and widely utilized technique. Imaging at 3 T offers the potential for higher resolutions images with better temporal resolution compared to 1.