Tom Chen

Taipei City Hospital | tch · Department of Medical Imaging

Background/aims Transcatheter arterial chemoembolization (TACE) is a main therapy for patients with intermediate-stage hepatocellular carcinoma (HCC). The purpose of our study was to determine the risk factors for 1-year mortality in patients treated solely with TACE. Methods A total of 123 patients with intermediate-stage HCC treated solely with...

The ultrasonically activated scalpel has been introduced as an alternative to conventional methods of hemostasis in surgical procedures. The present study investigated the benefits of using the Harmonic FOCUS (HF) scalpel in breast-conserving surgery (BCS) and in axillary staging surgery. All early-stage breast cancer patients who underwent BCS and...

Magnetic resonance cholangiopancreatography (MRCP) is a popular modality for evaluation of the biliary tract, yet there is no data on the normal common bile duct (CBD) size of the average Taiwanese adult. This study attempts to establish a reference range for CBD diameter for the Taiwanese population. Over a 2-year period, all adults who underwent...

The objective of our study was to assess the association of hospital characteristics and diagnosis with repeated utilization of CT and MRI using the nationwide population-based Taiwan National Health Insurance database. All CT and MR examinations for all health care services-including inpatient, outpatient, and emergency services-performed during 2...

The use and cost of computed tomography (CT) and magnetic resonance imaging (MRI) are both very high. The purpose of this study was to evaluate the relation between physicians' characteristics and the CT and MRI repeated within 90 days, using a nationwide population-based data set from Taiwan's National Health Insurance system. All physicians who o...

Ultrasound-triggered microbubble destruction (UTMD) is essential for targeted drug delivery but currently there is no agreed gold standard for its real-time monitoring. This study used a clinical diagnostic ultrasound scanner to quantify the destruction effects of different values of mechanical index (MI) on microbubble. This was achieved by measur...

A 56-year-old woman was maintained on continuous ambulatory peritoneal dialysis (PD) for 12 years. The patient presented to our hospital with chief complaints of intermittent abdominal pain and frequent loose stool. Plain radiograph of abdomen revealed extensive peritoneal calcification. Computed tomography confirmed the extensive peritoneal calcif...

To delineate the watersheds between hepatic arterial territories and their variations with the use of CO(2)-enhanced ultrasonography (US) and to compare the results with segmental anatomy as described by Couinaud. From March 2004 to January 2005, this study recruited 31 patients (18 men and 13 women; mean age, 63 years; range, 47-77 y) with hepatoc...

PURPOSE to determine the diagnostic value of 64-MDCT angiography for pre-operative assessment of anterolateral thigh (ALT) perforator flaps. METHOD AND MATERIALS Thirty-one patients (two women and 29 men; mean age: 51.9±10.4 years) underwent head and neck reconstruction surgery using ALT flap were included. All patients underwent pre-operative CT...

The common practice for diagnosis of complex cystic breast masses (CCBM) may be imaging-guided aspiration or biopsy of cystic or solid components. To assess the diagnostic value of sonographically guided needle sampling of cystic and solid components for CCBM. Twenty patients with 20 CCBM underwent sonographically guided fine-needle aspiration biop...

A 58-year-old male patient presented with a recurrent true malignant mixed tumor of the parotid gland. Patchy pulmonary opacities were identified with a chest radiograph. Subsequently, a CT scan of the chest showed pulmonary parenchymal consolidation with amorphous calcifications. This abnormality was confirmed to be the result of a metastatic true...

Polyacrylamide hydrogel (PAAG) was widely used for injection augmentation mammoplasty in Eastern Europe and China although uncommon in the western countries. However, the safety of this procedure remained controversial. Herein, we report a 30-year-old woman with a history of augmentation mammoplasty by PAAG injection developed galactoceles during h...

Hemangiopericytoma (HPC) was first described by Stout and Murray 1 in 1942. The cellular origin of HPC was thought to come from the pericytes, which are contractile cells surrounding the capillaries and post-capillary venules.2-4 The tumor was rare and was reported to most frequently affect patients in their fifth and sixth decades of life, with an...

PURPOSE To delineate the watersheds between right, left medial, and left lateral hepatic arterial territories and their variations using CO2 enhanced ultrasonography. This is then compared with segmental anatomy described by Claude Couinaud. METHOD AND MATERIALS A total of 31 patients were included in the study. After serial angiography prior to T...