A software program for automated compressive vertebral fracture detection on elderly women's lateral chest radiograph: Ofeye 1.0.

Background: Because osteoporotic vertebral fracture (OVF) on chest radiographs is commonly missed in radiological reports, we aimed to develop a software program which offers automated detection of compressive vertebral fracture (CVF) on lateral chest radiographs, and which emphasizes CVF detection specificity with a low false positivity rate.

Methods: For model training, we retrieved 3,991 spine radiograph cases and 1,979 chest radiograph cases from 16 sources, with among them in total 1,404 cases had OVF. For model testing, we retrieved 542 chest radiograph cases and 162 spine radiograph cases from four independent clinics, with among them 215 cases had OVF.

Cystic metastatic nasopharyngeal carcinoma presenting as branchial cleft cyst: report of two cases and review of the literature.

Purpose: To describe the differential diagnosis between solitary cystic metastatic carcinoma from branchial cleft cyst and provide references for clinicians to treat cystic metastases from primary sites of the head and neck region.

Materials And Methods: Two cases of cystic metastatic nasopharyngeal carcinoma (NPC) are presented and a review of the relevant English literature on cystic metastasis from head and neck cancer was performed.

Results: Two adult patients with a lateral cystic neck mass were initially clinically diagnosed as branchial cleft cysts.

Evidence based imaging strategies for solitary pulmonary nodule.

Solitary pulmonary nodule (SPN) is defined as a rounded opacity ≤3 cm in diameter surrounded by lung parenchyma. The majority of smokers who undergo thin-section CT have SPNs, most of which are smaller than 7 mm. In the past, multiple follow-up examinations over a two-year period, including CT follow-up at 3, 6, 12, 18, and 24 months, were recommended when such nodules are detected incidentally.

Prevalence and risk factors of lumbar spondylolisthesis in elderly Chinese men and women.

Objective: A screening survey for osteoporotic fractures in men and women in Hong Kong represents the first large-scale prospective population-based study on bone health in elderly (≥65 years) Chinese men and women. This study aims to identify the prevalence and potential risk factors of lumbar spondylolisthesis in these subjects.

Methods: The lateral lumbar radiographs of 1,994 male and 1,996 female patients were analysed using the Meyerding classification.

[Relationship between dynamic contrast-enhanced and perfusion magnetic resonance imaging and T-staging of nasopharyngeal carcinoma].

Objective: To perform the dynamic contrast-enhanced and perfusion magnetic resonance imaging (MRI) of nasopharyngeal carcinoma (NPC) and analyze the correlation with T-staging.

Methods: A total of 46 naïve NPC patients underwent MRI. The parameters of dynamic contrast-enhanced and perfusion MRI included time to peak (TTP), Slopemax and area under the curve (AUC).

Common and unusual CT and MRI manifestations of pancreatic adenocarcinoma: a pictorial review.

Pancreatic adenocarcinoma is the most common malignancy of the pancreas with high death rate. Preoperative imaging is crucial for the assessment of the disease and the planning of treatment. In this review, we discussed the common and unusual findings of pancreatic carcinoma.

A hole in the skull: CT manifestations of a solitary plasmacytoma in skull.

Plasmacytoma can present as multiple myeloma, solitary plasmacytoma of the bone (SPB), or extramedullary plasmacytoma. SPB is a rare entity that composes of malignant plasma cells and involves the bone to form only one or two lesions without evidence of disease dissemination. It accounts for only 4% of malignant plasma cell tumors.

CT findings of a gastrointestinal stromal tumor arising from small bowel.

Gastrointestinal stromal tumors (GISTs), the most common mesenchymal tumors of the gastrointestinal tract, arise from interstitial cells of Cajal. Most of them are composed of spindle cells and mimic leiomyoma morphologically. Nearly all GISTs demonstrate positive staining for CD-117 at immunohistochemistry examination, which helps to distinguish them from true leiomyomas.

The value of delayed (18)F FDG-PET imaging in diagnosis of solitary pulmonary nodules: A preliminary study on 28 patients.

Objective: The aim of this study was to investigate whether adding delayed phase imaging can improve diagnostic ability of (18)F-fluorodeoxyglucose ((18)F-FDG) positron emission tomography (PET) in evaluating solitary pulmonary nodules (SPNs).

Materials And Methods: 28 patients with SPNs received dual-phase (18)F-FDG PET at 1h and 2h after (18)F-FDG injection during Feb 2009 to Jun 2011were included in this retrospective study. Their final diagnosis was confirmed by pathological examination in 27 cases and clinical follow-up in 1 case.

Value of CT in the diagnosis and follow-up of gastrointestinal stromal tumors.

Gastrointestinal stromal tumors (GISTs) are the most common gastrointestinal mesenchymal tumors. Computed tomography (CT) often shows exophytic gastrointestinal masses with cystic changes, necrosis or fistula formation, and heterogeneous enhancement. After Gleevec therapy, the primary tumor, its metastases, and its recurrences can develop cystic changes and decrease in size, these findings can be satisfactorily monitored by CT.

Value of multidetector spiral CT in diagnosis of acute thoracolumbar spinal fracture and fracture-dislocation.

Objective: To investigate the diagnostic value of multidetector spiral CT (MSCT) in acute thoracolumbar spinal fracture and fracture-dislocation.

Methods: CT imaging files of 152 consecutive traumatic patients with thoracolumbar fractures were retrospectively reviewed. MSCT scannings were performed with a collimation of 3-5 mm and a pitch of 5.

Role of curved planar reformations using multidetector spiral CT in diagnosis of pancreatic and peripancreatic diseases.

Aim: To investigate the role of curved planar reformations using multidetector spiral CT (MSCT) in diagnosis of pancreatic and peripancreatic diseases.

Methods: From October 2001 to September 2003, 47 consecutive patients with pancreatic or peripancreatic diseases, which were confirmed by operation, endoscopic retrograde cholangiopancreatography and clinical follow-up, were enrolled in this study. CT scanning was performed at a MSCT with four rows of detector.

Enhancement patterns of small hepatocellular carcinoma shown by dynamic MRI and CT.

Objectives: To study prospectively the enhancement features of small hepatocellular carcinoma (SHCC) with multi-phase scanning of dynamic MRI and spiral CT, and discuss the superiority of dynamic MRI to spiral CT.

Methods: Multi-phase dynamic contrast scanning of high field MRI and spiral CT were performed in 53 patients with SHCC. The arterial phase, portal venous phase and delayed phase scanning of spiral CT was done after the pre-contrast scanning of the entire liver.