[Percutaneous paraumbilical embolization of bleeding rectal varices due to portal hypertension].

 Portal hypertension may lead to severe esophageal or rectal variceal bleeding.  We present a case of a 67-year-old patient presenting with recurrent rectal variceal bleeding who was non-responsive to endoscopic treatment. We are reporting on an interventional therapeutic approach found in interdisciplinary consensus.

Oral distension methods for small bowel MRI: comparison of different agents to optimize bowel distension.

Background Different methods for bowel distension prior to magnetic resonance imaging (MRI) examinations were described in recent years. Purpose To compare orally administered psyllium or locust bean gum / mannitol (LBM) with tylose administered through a duodenal catheter for bowel distension in patients undergoing MRI examination of the small bowel. Material and Methods Three different methods of bowel distension prior to MRI were compared: tylose applied through a duodenal catheter and orally administered psyllium and LBM in three groups with 15 patients each.

[S3 guideline--Diagnosis and treatment of colorectal carcinoma: relevance for radiologic imaging and interventions].

The new German S3 guideline "Colorectal Carcinoma" was created as part of the German Guideline Program in Oncology of the Association of the Scientific Medical Societies in Germany, the German Cancer Society and the German Cancer Aid under the auspices of the German Society for Digestive and Metabolic Diseases and replaces the guideline from 2008. With its evidence-based treatment recommendations, the guideline contains numerous updates and detailed definitions regarding the diagnosis and treatment of colon and rectal cancer. In particular, consensus-based recommendations regarding early detection, preoperative diagnostic method selection, and the use of interventional radiological treatment methods are detailed.

Characteristics, changes and influence of body composition during a 4486 km transcontinental ultramarathon: results from the TransEurope FootRace mobile whole body MRI-project.

Background: Almost nothing is known about the medical aspects of runners doing a transcontinental ultramarathon over several weeks. The results of differentiated measurements of changes in body composition during the Transeurope Footrace 2009 using a mobile whole body magnetic resonance (MR) imager are presented and the proposed influence of visceral and somatic adipose and lean tissue distribution on performance tested.

Methods: 22 participants were randomly selected for the repeated MR measurements (intervals: 800 km) with a 1.

Sixty-four MDCT achieves higher contrast in pancreas with optimization of scan time delay.

Aim: To compare different multidetector computed tomography (MDCT) protocols to optimize pancreatic contrast enhancement.

Methods: Forty consecutive patients underwent contrast-enhanced biphasic MDCT (arterial and portal-venous phase) using a 64-slice MDCT. In 20 patients, the scan protocol was adapted from a previously used 40-channel MDCT scanner with arterial phase scanning initiated 11.

The TransEurope FootRace Project: longitudinal data acquisition in a cluster randomized mobile MRI observational cohort study on 44 endurance runners at a 64-stage 4,486 km transcontinental ultramarathon.

Background: The TransEurope FootRace 2009 (TEFR09) was one of the longest transcontinental ultramarathons with an extreme endurance physical load of running nearly 4,500 km in 64 days. The aim of this study was to assess the wide spectrum of adaptive responses in humans regarding the different tissues, organs and functional systems being exposed to such chronic physical endurance load with limited time for regeneration and resulting negative energy balance. A detailed description of the TEFR project and its implemented measuring methods in relation to the hypotheses are presented.

[Radiological evaluation of intraductal papillary mucinous neoplasm].

The intraductal papillary mucinous neoplasm (IPMN) is the most frequent cystic neoplasm of the pancreas. Due to the widespread use of cross-sectional imaging IPMN is being incidentally recognized with increasing frequency. The most common type is branch- duct IPMN which occurs multifocally in about 20-30%.

The role of dynamic, contrast-enhanced MRI in differentiating lung tumor subtypes.

The aim was to correlate dynamic magnetic resonance imaging perfusion parameters of pulmonary tumors with histological tumor classification. Eighty-six patients with lung cancer were examined. A differentiation of non-small cell lung cancer vs.

[MRI changes of Achilles tendon and hindfoot in experienced runners and beginners during training and after a (half)-marathon competition].

Background: Marathon running is gaining in popularity. Its benefits regarding the cardiovascular system as well as the metabolism are beyond doubt. However, whether or not there are detrimental side effects to the musculoskeletal system such as wear and tear is an unsolved question.

Automatic detection of the carotid artery boundary on cross-sectional MR image sequences using a circle model guided dynamic programming.

Background: Systematic aerobe training has positive effects on the compliance of dedicated arterial walls. The adaptations of the arterial structure and function are associated with the blood flow-induced changes of the wall shear stress which induced vascular remodelling via nitric oxide delivered from the endothelial cell. In order to assess functional changes of the common carotid artery over time in these processes, a precise measurement technique is necessary.

Use of magnetic resonance imaging to detect neoplastic meningitis: limited use in leukemia and lymphoma but convincing results in solid tumors.

Background: An early diagnosis of meningitis is important to improve patients' survival. Data about a direct comparison of cerebrospinal fluid cytology (CSF-cytology) and MRI are very limited. Therefore, the aim of this study was to compare these two diagnostic modalities in diagnosing meningitis in patients with hematopoietic and solid malignancies.

Diffusion-weighted MR imaging in comparison to integrated [¹⁸F]-FDG PET/CT for N-staging in patients with lung cancer.

Purpose: The purpose of this study was to prospectively determine the diagnostic accuracy of diffusion-weighted imaging (DWI) using MRI in the staging of thoracic lymph nodes in patients with lung cancer, and to compare the performance to that of PET/CT.

Patients And Method: 20 consecutive patients (pts) with histologically proven lung cancer were included in this study. In all pts FDG-PET/CT was routinely performed to stage lung carcinoma.

[A prospective comparison of video colonoscopy and CT colonography in asymptomatic patients screened for colorectal cancer].

Background And Objective: It was the aim of this study to compare the sensitivity and specificity of low-dose CT colonography (CTC) with that of optical colonoscopy (OC) in asymptomatic patients undergoing these tests in a screening program for colonic cancer.

Patients And Methods: 58 patients (mean age 62.6 years) were included.

Assessment of COPD severity by computed tomography: correlation with lung functional testing.

CT scans of 474 patients with suspected chronic obstructive pulmonary disease (COPD) were retrospectively evaluated by automated software. There was a correlation between the total lung capacity (TLC) and the total lung volume (TLV) (r=.675, P<.

Cisterna chyli in patients with malignancy--influence of cardiovascular disease on the prevalence of the cisterna.

Unlabelled: The purpose of this study was to investigate the potential correlation between the presence and size of the cisterna chyli (CC) on computed tomography (CT) and the presence of cardiovascular disease.

Materials And Methods: Out of a 3000-patient cohort 2599 patients who received a CT examination of the chest and/or abdomen with measurable inferior vena cava and azygos vein were included in this retrospective study. To assess the presence of cardiovascular disease the following parameters were recorded from the PACS or clinical information system: diameter of vena cava and azygos vein, presence of ascitis, serum creatinine, history of congestive heart failure, coronary artery disease or arterial hypertension and medication (diuretics, beta-blocker).

Lymphangioleiomyomatosis: solitary abdominal manifestation (2009: 9b).

Lymphangioleiomyomatosis (LAM) is a rare disease that usually affects premenopausal woman and is characterized by cystic lung lesions and lymphatic disorders. We report a case of a 23-year-old woman who presented with diffuse, but increasing abdominal pain. Transabdominal ultrasound showed multiple cystic formations.

Pitfalls in abdominal diffusion-weighted imaging: how predictive is restricted water diffusion for malignancy.

Objective: As diffusion-weighted imaging is increasingly implemented into routine protocols of abdominal MRI, abnormal findings in expected and unexpected locations become more common. The aim of our retrospective study was to investigate the specificity of restricted diffusion in differentiation of benign from malignant abdominal disease.

Materials And Methods: Two hundred thirty consecutively registered patients underwent abdominal MRI including diffusion-weighted imaging (single-shot spin-echo echo-planar sequence) with b values of 0, 150, 500, and 1,000 s/mm(2).

Liver perfusion with dynamic multidetector-row computed tomography as an objective method to evaluate the efficacy of chemotherapy in patients with colorectal cancer.

A total of 24 liver metastases of colorectal cancer were evaluated by dynamic multiphasic CT. Under chemotherapy, follow-up examinations were performed every 3 months. The tumor marker CEA before vs.

[CT colonography: evaluation of two 3D algorithms in a screening population].

Purpose: The purpose of this multicenter study was to compare a dissection display and an endoluminal display for CT colonography (CTC) by means of detection rates and evaluation time in a screening collective.

Materials And Methods: 4 blinded readers evaluated CTC datasets from 42 patients with 55 endoscopically confirmed polyps. The datasets were read in a randomized order using two different 3D visualization methods (endoluminal view vs.

Value of MDCT in preoperative local staging of rectal cancer for predicting the necessity for neoadjuvant radiochemotherapy.

Purpose: Neoadjuvant therapy may reduce local rectal cancer recurrence after total mesorectum extirpation. This study was performed to assess whether multi-detector row CT (MDCT) is capable of reliably differentiating UICC I (surgery) from UICC II-IV (neoadjuvant therapy).

Materials And Methods: 29 patients underwent preoperative MDCT of the abdomen in a portal venous phase.

Coronary MR imaging: navigator echo biofeedback increases navigator efficiency--initial experience.

Rationale And Objectives: The aim of this study was to investigate whether a respiratory biofeedback system could increase navigator efficiency and maintain image quality compared to conventional respiratory-gated magnetic resonance coronary angiography (MRCA).

Materials And Methods: Eighteen healthy volunteers underwent MRCA using three different respiratory-gating protocols. A conventional expiratory free-breathing (FB) sequence was compared to two approaches using navigator echo biofeedback (NEB), a midinspiratory approach (NEBin) and an expiratory approach (NEBex).

Aortic wall thickness assessed by multidetector computed tomography as a predictor of coronary atherosclerosis.

Purpose of this study was the evaluation of the thoracic aortic wall thickness as a potential identifier of patients at increased risk for future cardiac events. Thoracic aortic wall thickness was measured with MDCT in 160 patients. The CT-scans were implemented as non-invasive coronary angiography studies.

Prospectively gated axial CT coronary angiography: preliminary experiences with a novel low-dose technique.

To assess image quality and radiation exposure with prospectively gated axial CT coronary angiography (PGA) compared to retrospectively gated helical techniques (RGH). Forty patients with suspected coronary artery disease (CAD) and a stable heart rate below 65 bpm underwent CT coronary angiography (CTCA) using a 64-channel CT system. The patient cohort consisted of 20 consecutive patients examined using a PGA technique and 20 patients examined using a standard RGH technique.