Long-term Follow-up with MRI Scans After Enucleation of Peripheral Nerve Schwannomas: Results from a Single-center Case Series.

Background: Enucleation is a surgical technique to resect peripheral nerve schwannomas. The procedure has a low risk for postoperative deficit, but a small chance for recurrence, because tumor cells may remain inside the pseudocapsule that is left after resection. Magnetic resonance imaging (MRI) scans are frequently performed after surgery to investigate potential residual tumor, but currently there is little information in the literature on the value of follow-up with MRI.

Accelerated Partial Breast Irradiation Using External Beam or Intraoperative Electron Radiation Therapy: 5-Year Oncological Outcomes of a Prospective Cohort Study.

Purpose: To evaluate the ipsilateral breast tumor recurrence (IBTR) after 2 accelerated partial breast irradiation (APBI) techniques (intraoperative electron radiation therapy [IOERT] and external beam APBI [EB-APBI]) in patients with early-stage breast cancer.

Methods And Materials: Between 2011 and 2016, women ≥60 years of age with breast carcinoma or Ductal Carcinoma In Situ (DCIS) of ≤30 mm and cN0 undergoing breast-conserving therapy were included in a 2-armed prospective multicenter cohort study. IOERT (1 × 23.

Inter-observer agreement between 2-dimensional CT versus 3-dimensional I-Space model in the Diagnosis of Occult Scaphoid Fractures.

Background: The I-Space is a radiological imaging system in which Computed Tomography (CT)-scans can be evaluated as a three dimensional hologram. The aim of this study is to analyze the value of virtual reality (I-Space) in diagnosing acute occult scaphoid fractures.

Methods: A convenient cohort of 24 patients with a CT-scan from prior studies, without a scaphoid fracture on radiograph, yet high clinical suspicion of a fracture, were included in this study.

Target volume delineation in breast conserving radiotherapy: are co-registered CT and MR images of added value?

Introduction: In breast conserving radiotherapy differences of target volume delineations between observers do occur. We evaluated whether delineations based on co-registered computed tomography (CT) and magnetic resonance (MR) imaging may result in an improved consistency between observers. We used the delineation conformity index (CI) to compare clinical target volumes of glandular breast tissue (CTV breast) and lumpectomy cavity (LC) on both imaging modalities.

Clinical outcome and structural integrity of all-arthroscopic repair of degenerative subscapularis tendon tears.

Purpose: The purpose of this study was to evaluate the clinical outcome of all-arthroscopic repair of degenerative subscapularis tendon tears and post-operative structural integrity using magnetic resonance imaging with a short-term follow-up.

Methods: Twenty-one patients were treated all-arthroscopically for a full-thickness degenerative subscapularis tendon tear. Median patient age was 55 years (range, 41-69).

MRI as a reference standard for suspected scaphoid fractures.

Objectives: Some have suggested that MRI might be the best reference standard for a true fracture among patients with suspected scaphoid fractures. The primary aim of this study was to determine the rate of false-positive diagnosis of an acute scaphoid fracture in a cohort of healthy volunteers.

Methods: In a prospective study, 33 healthy volunteers were recruited and both wrists of each were scanned, except for 2 volunteers for whom only one wrist was scanned.

MRI- versus CT-based volume delineation of lumpectomy cavity in supine position in breast-conserving therapy: an exploratory study.

Purpose: To examine magnetic resonance imaging (MRI) and computed tomography (CT) for lumpectomy cavity (LC) volume delineation in supine radiotherapy treatment position and to assess the interobserver variability.

Methods And Materials: A total of 15 breast cancer patients underwent a planning CT and directly afterward MRI in supine radiotherapy treatment position. Then, 4 observers (2 radiation oncologists and 2 radiologists) delineated the LC on the CT and MRI scans and assessed the cavity visualization score (CVS).

Magnetic resonance imaging- versus computed tomography-based target volume delineation of the glandular breast tissue (clinical target volume breast) in breast-conserving therapy: an exploratory study.

Purpose: To examine MRI and CT for glandular breast tissue (GBT) volume delineation and to assess interobserver variability.

Methods And Materials: Fifteen breast cancer patients underwent a planning CT and MRI, consecutively, in the treatment position. Four observers (two radiation oncologists and two radiologists) delineated the GBT according to the CT and separately to the MR images.

A simple MRI protocol in patients with clinically suspected appendicitis: results in 138 patients and effect on outcome of appendectomy.

To establish the value of breathhold magnetic resonance imaging (MRI) in the diagnosis of acute appendicitis. Over a 14-month period, 138 patients clinically suspected of having appendicitis were evaluated prospectively with MRI and comprised the study group. Fast turbo spin-echo breathhold T1, T2 and T2 fat suppression sequences were used in coronal and axial planes.

Observer variation in MRI for suspected scaphoid fractures.

The aim of this study was to evaluate prospectively the observer variation in the detection of pathology on MRI for suspected acute scaphoid fracture. 79 consecutive MR scans were included to calculate the inter-observer variation. All patients were suspected of having a scaphoid fracture but had no fracture on radiographs.

MR imaging: effectiveness and costs at triage of patients with nonacute knee symptoms.

Purpose: To prospectively evaluate the cost and effectiveness of magnetic resonance (MR) imaging performed to exclude the need for arthroscopy in patients with nonacute knee symptoms who are highly suspected clinically of having intraarticular knee abnormality.

Materials And Methods: The study was approved by the institutional review boards of three hospitals; informed patient consent was obtained. All 584 included patients (406 male, 178 female; mean age, 31.

The accuracy of subacromial injections: a prospective randomized magnetic resonance imaging study.

Purpose: To assess the accuracy of shoulder infiltrations in the subacromial bursa (SAB) by a posterior or an anteromedial approach. Magnetic resonance imaging (MRI) and clinical outcome were used for evaluation.

Type Of Study: A prospective randomized study.

Clinical consequences of bone bruise around the knee.

The aim of this study is to evaluate the relation between bone bruise and (peri-)articular derangement and to assess the impact of bone bruise on presentation and short term course of knee complaints. We recorded MR abnormalities in 664 consecutive patients with sub-acute knee complaints. Patients were divided in four groups: patients with and without intra-articular knee pathology, subdivided in patients with and without bone bruise.

Mesenteric panniculitis: US and CT features.

Mesenteric panniculitis is an aseptic inflammation of mesenteric fat. Before the age of ultrasonography (US) and computed tomography (CT), mesenteric panniculitis was rarely diagnosed, but today the disorder is more commonly encountered, often as an incidental imaging finding. Its exact cause remains unknown.

Radiographic evaluation of the knee joint after meniscal allograft transplantation. An experimental study in rabbits.

Experimental and clinical studies have documented that meniscal allografts show capsular ingrowth in meniscectomized knees. However, it remains to be established whether meniscal allograft transplantation can prevent degenerative changes after total meniscectomy. In this study radiography was used to compare changes in rabbit knees after meniscectomy and after meniscal transplantation.

Contrast vaginography is more accurate than the radiopaque rod for localization of the vagina.

Purpose: To compare the radiopaque vaginal rod method with contrast vaginography in localization of the vagina.

Methods And Materials: In 25 female patients who needed pelvic radiotherapy, both our standard localization procedure using the vaginal rod and a localization procedure using contrast vaginography were performed. As a rod can change the position of the vagina, contrast vaginography was considered to display the true anatomic position of the vagina.

Ultrasound variables and their prognostic value in a population of 1103 patients with 272 breast cancers.

In a prospective two-centre study targeted US was performed as an adjunct to mammography in a population of 1103 patients with 272 breast cancers, 517 benign lesions and no abnormalities in 314 patients. The purpose of the study was to analyse the distribution of the different US variables among the breast lesions and to determine the prognostic value of these variables with respect to the diagnosis of malignancy. The following variables were analysed: border; contour; orientation; structure; echogenicity; sound transmission; and size.

Infarction of omentum and epiploic appendage: diagnosis, epidemiology and natural history.

Epiploic appendicitis and segmental omentum infarction are considered to be rare conditions, which may mimic an abdominal surgical emergency. The purpose of our study was to describe clinical findings, US and CT appearance of infarction of an epiploic appendage and omentum, and to determine their epidemiological characteristics and natural history. We retrospectively studied clinical, US and CT findings at hospital admission and follow-up of all patients who were diagnosed at our institution with epiploic appendicitis or omentum infarction between June 1988 and November 1997.

Diagnosis of breast cancer: contribution of US as an adjunct to mammography.

Purpose: To determine the value of ultrasonography (US) as an adjunct to mammography for the diagnosis of breast cancer.

Materials And Methods: In a 2-year prospective study, 4,811 mammograms were classified according to level of suspicion of malignancy. Targeted US was performed to analyze (a) circumscribed lesions, possibly cysts; (b) palpable lesions visible at mammography; (c) palpable lesions not visible at mammography; and (d) nonpalpable lesions visible at mammography.