MRI of early rectal cancer; bisacodyl micro-enema increases submucosal width, reader confidence, and tumor conspicuity.

Purpose: To investigate the influence of a micro-enema on diagnostic performance, submucosal width, reader confidence, and tumor conspicuity using MRI to stage early rectal cancers (ERC).

Methods: In this single-center study, we consecutively included 50 participants with assumed ERC who all completed MRI with (MRin) and without (MRex) a micro-enema. The diagnostic performance was recorded for two experienced radiologists using histopathology as the gold standard.

Early rectal cancer: The diagnostic performance of MRI supplemented with a rectal micro-enema and a modified staging system to identify tumors eligible for local excision.

Background: In staging early rectal cancers (ERC), submucosal tumor depth is one of the most important features determining the possibility of local excision (LE). The micro-enema (Bisacodyl) induces submucosal edema and may hypothetically improve the visualization of tumor depth.

Purpose: To test the diagnostic performance of MRI to identify ERC suitable for LE when adding a pre-procedural micro-enema and concurrent use of a modified classification system.

Magnetic resonance imaging of anal cancer: tumor characteristics and early prediction of treatment outcome.

Purpose: To analyze tumor characteristics derived from pelvic magnetic resonance imaging (MRI) of patients with squamous cell carcinoma of the anus (SCCA) before and during chemoradiotherapy (CRT), and to compare the changes in these characteristics between scans of responders vs. nonresponders to CRT.

Methods: We included 52 patients with a pelvic 3T MRI scan prior to CRT (baseline scan); 39 of these patients received an additional scan during week 2 of CRT (second scan).

Iterative reconstruction improves image quality and reduces radiation dose in trauma protocols; A human cadaver study.

Background: Radiation-related cancer risk is an object of concern in CT of trauma patients, as these represent a young population. Different radiation reducing methods, including iterative reconstruction (IR), and spilt bolus techniques have been introduced in the recent years in different large scale trauma centers.

Purpose: To compare image quality in human cadaver exposed to thoracoabdominal computed tomography using IR and standard filtered back-projection (FBP) at different dose levels.

Is there need for routine CT colonography after CT-verified uncomplicated diverticulitis of the sigmoid colon?

Background: Following an episode of acute diverticulitis, surgical guidelines commonly advise routine colonic follow-up to rule out underlying malignancy. However, as a CT of the abdomen is frequently performed during clinical work-up, the routine need for colonic follow-up has become debated.

Purpose: To evaluate the need for routine CT colonography after an episode of CT-verified uncomplicated sigmoid diverticulitis to rule out underlying colorectal malignancy.

Preoperative 18F-FDG PET/computed tomography predicts survival following resection for colorectal liver metastases.

Objective: The liver is the most frequent metastatic site from colorectal cancer and about 20% of these patients are treated by surgical resection. However, the 5-year disease-free survival (DFS) following resection is only about 25% and 5-year overall survival (OS) about 38%. The aim of the study was to evaluate the ability of metabolic and volumetric measurements from fluorine-18-fluorodeoxyglucose (F-FDG) PET/computed tomography (CT) prior to resection for colorectal liver metastases (CLM) to predict survival.

Do we really need the arterial phase on CT in pelvic trauma patients?

Purpose: To evaluate whether an arterial phase scan improves the diagnostic performance of computed tomography to identify pelvic trauma patients who received angiographic intervention on demand of the trauma surgeon.

Methods: This retrospective single-center study was performed at an academic Scandinavian trauma center with approximately 2000 trauma admissions annually. Pelvic trauma patients with arterial and portal venous phase CT from 2009 to 2015 were included.

Texture analysis on diffusion tensor imaging: discriminating glioblastoma from single brain metastasis.

Background: Texture analysis has been done on several radiological modalities to stage, differentiate, and predict prognosis in many oncologic tumors.

Purpose: To determine the diagnostic accuracy of discriminating glioblastoma (GBM) from single brain metastasis (MET) by assessing the heterogeneity of both the solid tumor and the peritumoral edema with magnetic resonance imaging (MRI) texture analysis (MRTA).

Material And Methods: Preoperative MRI examinations done on a 3-T scanner of 43 patients were included: 22 GBM and 21 MET.

Triple-split-bolus versus single-bolus CT in abdominal trauma patients: a comparative study.

Background Split-bolus computed tomography (CT) is a recent development in trauma imaging. Instead of multiple scans in different contrast phases after a single contrast bolus, split-bolus protocols consist of one single scan of the thorax and abdomen after two or three contrast injections at different points of time. Purpose To evaluate and compare image quality and injury findings of a new triple-split-bolus CT (TS-CT) protocol of thorax and abdomen with those of a portal venous phase CT (PV-CT) in the same patient group.

Diagnostic performance of texture analysis on MRI in grading cerebral gliomas.

Background And Purpose: Grading of cerebral gliomas is important both in treatment decision and assessment of prognosis. The purpose of this study was to determine the diagnostic accuracy of grading cerebral gliomas by assessing the tumor heterogeneity using MRI texture analysis (MRTA).

Material And Methods: 95 patients with gliomas were included, 27 low grade gliomas (LGG) all grade II and 68 high grade gliomas (HGG) (grade III=34 and grade IV=34).

Diagnostic performance of CT, MRI and PET/CT in patients with suspected colorectal liver metastases: the superiority of MRI.

Background: Meticulous imaging of colorectal liver metastases (CRLM) is mandatory to optimize outcome after liver resection. However, the detection of CRLM is still challenging.

Purpose: To evaluate prospectively if magnetic resonance imaging (MRI) with diffusion-weighted and Gd-EOB-DTPA-enhanced sequences had a better diagnostic performance for CRLM compared to computed tomography (CT) and fluorine-18 fluorodeoxyglucose positron emission tomography (PET/CT).

Respiratory gated PET/CT of the liver: A novel method and its impact on the detection of colorectal liver metastases.

Purpose: To evaluate the diagnostic performance of a new method for respiratory gated positron emission tomography (rgPET/CT) for colorectal liver metastases (CRLM), secondly, to assess its additional value to standard PET/CT (PET/CT).

Materials And Methods: Forty-three patients scheduled for resection of suspected CRLM were prospectively included from September 2011 to January 2013. None of the patients had previously undergone treatment for their CRLM.

Standardized cine-loop documentation in renal ultrasound facilitates skill-mix between radiographer and radiologist.

Background: The radiographers' role in ultrasound (US) has been debated due to the operator-dependent aspect of diagnostic US. With standardized cine-loop ultrasound (SCUS) a reliable diagnosis can be achieved by reading SCUS independently from performing the procedure.

Purpose: To study the correlation between sonographic findings when SCUS is performed and read by a radiologist and when SCUS is performed by a radiographer and read by a radiologist, and to assess the radiologists' confidence when reading SCUS examinations performed by a radiographer.

Standardized cine-loop documentation in abdominal ultrasound facilitates offline image interpretation.

Background: One of the main disadvantages of conventional ultrasound is its operator dependency, which might impede the reproducibility of the sonographic findings. A new approach with cine-loops and standardized scan protocols can overcome this drawback.

Purpose: To compare abdominal ultrasound findings of immediate bedside reading by performing radiologist with offline reading by a non-performing radiologist, using standardized cine-loop sequences.

Impact of contrast-enhanced intraoperative ultrasound on operation strategy in case of colorectal liver metastasis.

Background: Surgical treatment is the only option for long-term survival in patients with colorectal liver metastasis (CRLM). Contrast-enhanced CT and MRI are usually used for preoperative liver imaging. The initial surgical strategy for liver resection is based upon these findings.

Preserved splenic function after angioembolisation of high grade injury.

Background: After introducing splenic artery embolisation (SAE) in the institutional treatment protocol for splenic injury, we wanted to evaluate the effects of SAE on splenic function and assess the need for immunisation in SAE treated patients.

Methods: 15 SAE patients and 14 splenectomised (SPL) patients were included and 29 healthy blood donors volunteered as controls. Clinical examination, medical history, general blood counts, immunoglobulin quantifications and flowcytometric analysis of lymphocyte phenotypes were performed.

Nonoperative management of splenic injuries: improved results with angioembolization.

Background: Nonoperative management (NOM) of patients with severe splenic injuries carries a significant risk of failure. We hypothesized that adding angiographic embolization (AE) to the NOM protocol would decrease the laparotomy rate, and increase the success rate of NOM and splenic salvage rate.

Methods: A protocol introducing AE in the treatment of splenic injuries was implemented.

A protocol for angiographic embolization in exsanguinating pelvic trauma: a report on 31 patients.

Background: The indication for acquiring angiographic embolization in the initial treatment of severe pelvic fractures is controversial. We describe the characteristics and outcome of 31 patients with traumatic pelvic bleeding who underwent percutaneous angiography with embolization according to a standardized protocol.

Patients And Methods: During an 8.

[Treatment of splenic injuries in children].

Background: Most children with blunt splenic trauma are treated non-operatively. Controversy exists regarding the minimal hospital stay, follow-up imaging and length of activity restriction required after discharge.

Material And Methods: To evaluate outcome for this group of patients, a review was performed of children (age below 14) with blunt splenic injuries treated between January 2000 and December 2003.

[Pseudoaneurysm in splenic injury].

Blunt splenic injuries are increasingly being managed non-operatively. Consequently, radiological examinations in the follow up of these injuries must aim at detecting lesions like pseudoaneurysms that can cause delayed bleeding. Two patients are presented.