Background and study aims: The diagnosis of mediastinal intra-abdominal lymphadenopathy is sometimes difficult, especially in patients who have no other primary lesions. Lymphoma one the main causes this condition. Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) a safe accurate diagnostic procedure for lesions surrounding gastrointestinal tract. However, diagnosing lymphoma using EUS-FNA technique remains challenge, due to limitations amount material sampled. aim present was...

Ductal carcinoma in situ (DCIS) accounts for 20%-25% of breast cancers detected at screening mammography. The lesions are diverse and commonly classified on the basis their mammographic features histologic characteristics such as nuclear grade presence or absence necrosis. most common finding DCIS is microcalcifications, but a low-grade lesion without necrosis less likely to manifest with calcifications than either an intermediate- high-grade lesion. Other findings might include mass...

The purpose of our study was to determine how frequently the right adrenal vein could be unequivocally identified on MDCT and spectrum anatomic variations seen in vein.Contrast-enhanced performed 104 patients with thoracoabdominal vascular disease using an 8-MDCT scanner. Both axial multiplanar images were reviewed by two radiologists. following points regarding evaluated: degree visualization; relationship accessory hepatic or other veins; anatomy, including location orifice relation...

To retrospectively evaluate the accuracy of multi-detector row helical computed tomography (CT) with intravenous contrast material and without oral for depiction perforated appendicitis.This study was approved by institutional review board; informed consent waived. CT images in 102 patients (60 male patients, 42 female patients; age range, 4-82 years; mean age, 37.3 years) surgically pathologically proved appendicitis who were examined between January 2000 December 2002 reviewed. Original...

To preoperatively evaluate anatomic variations of the bronchial arteries by obtaining three-dimensional (3D) simulations with multidetector computed tomography (CT).This study was approved institutional review board, and written informed consent obtained from all participants. Seventy-three consecutive patients esophageal cancer underwent dynamic CT. The data were used to generate 3D thoracic cavity. These images then bilateral mediastinal course in relation esophagus trachea-bronchi....

We reviewed the CT findings of subtypes papillary renal cell carcinoma (RCC), which behave differently clinicopathologically.The features two pathologic RCC differ, probably reflecting their different features. Type 1 tumors have more distinct margins than type 2 and homogeneous density. Although in early stages show similar to those tumors, they are at advanced on whole, with showing indistinct margins, frequent centripetal infiltration, tumor thrombi all pT3b cases. Radiologists should be...

This study evaluates the efficiency and dosimetric performance of RatoGuide, an artificial intelligence (AI)-assisted radiotherapy planning tool, by comparing AI-generated manually created treatment plans for a 50-year-old male with right-sided oropharyngeal cancer (cT2N2bM0, cStage IVA) who underwent concurrent chemoradiotherapy. Treatment were using volumetric-modulated arc therapy (VMAT) following approach used Japanese Clinical Oncology Group (JCOG) protocol. RatoGuide generated two...

Comparison of MDCT and MRI for Evaluating the Intraductal Component Breast CancerAkiko Shimauchi1 2, Takayuki Yamada1, Akihiro Sato1, Kei Takase1, Shin Usami3, Takanori Ishida3, Takuya Moriya4 Shoki Takahashi1Audio Available | Share

Malignant psoas syndrome (MPS) causes painful hip immobilization when a malignant tumor reaches the muscle. However, there exists different condition in which invades muscle, leading to flexion failure without immobilization. This study aimed define (MHFFS) as tumors located upper lumbar region or at lesser trochanter of femur, near origin termination and compare its prevalence, characteristics, outcomes with those classical MPS. We analyzed 291 patients who received palliative radiotherapy...

Rationale and Objectives: To study time-related magnetic resonance imaging (MRI) histopathological findings after radiofrequency ablation (RFA) in the normal liver. Methods: Under ultrasound guidance, RFA was performed 22 rabbits with a 15-gauge expandable probe inserted into The RF power applied at 10 W initially 5-W increment every minute until “roll-off” occurred. subjected to postmortem MRI 3days (n = 6), 2 weeks 4 12 4) RFA. Spin-echo (SE) T1-weighted image (WI) (TR/TE=500/12) fast SE...

Objective: To assess the usefulness of MDCT in preoperative evaluation artery Adamkiewicz (ARM) and its parent artery. Methods: Ten patients with thoracoabdominal vascular diseases underwent entire aorta iliac arteries. The visualization ARM, branching level site origin, continuity intercostal/lumbar arteries ARM were investigated. Results: In 9 10 patients, was clearly visualized. length from to could be traced 8 patients. Surgical treatment or stentgraft insertion based on a consideration...

Accurate diagnosis of local invasion hilar cholangiocarcinomas is challenging due to their small size and the anatomic complexity hepatic region. On other hand, correct essential for assuring possibility curative surgery. The purpose this study was evaluate feasibility four-channel multidetector-row computed tomography (MDCT) in assessment vascular bile duct involvement, by which we could obtain useful information surgical management cholangiocarcinoma. subjects were 18 patients whom extent...

A method is proposed for preventing privacy invasion through unintentional capture of facial images. Prevention methods such as covering the face and painting particular patterns on are effective but hinder face-to-face communication. The overcomes this problem use a device worn that transmits near-infrared signals picked up by camera image sensors, which makes in captured images undetectable. similar appearance to pair eyeglasses, cannot be seen human eye, so communication not hindered....

When a malignant tumor infiltrates the psoas muscle, it is termed syndrome (MPS). We are reporting this case because malignancy led to atrophy of and clinical course differed from typical presentation MPS. A 72-year-old Japanese female with advanced sigmoid colon cancer multiple metastases had been undergoing systemic chemotherapy for four years. She complained severe back pain on numeric rating scale (NRS) 4-5, left groin pain, hip flexion weakness. Although she could stand up, started...

A female patient in her early 50s with breast cancer underwent breast-conserving surgery, followed by radiation therapy. She developed multiple lung and bone metastases was started on chemotherapy bevacizumab paclitaxel 3 years later. After 6 months of chemotherapy, she a decline conversation memory. Magnetic resonance imaging (MRI) conducted showed cortical subcortical lesions nodules restricted diffusion but no contrast enhancement gadolinium (Gd) enhanced T1-weighted image, raising...

The finite element method (FEM) is a powerful mathematical tool to simulate and visualize the mechanical deformation of tissues organs during medical examinations or interventions. It yet challenge build up an FEM mesh directly from volumetric image partially because regions (or structures) interest (ROIs) may be irregular fuzzy. A software package, ImageParser, developed generate 3-D tomographic images. This uses semi-automatic detect ROIs context including neighboring organs, completes...