Diagnostic Performance of Core Needle Biopsy and Fine Needle Aspiration Separately or Together in the Diagnosis of Intrathoracic Lesions Under C-arm Guidance.

Purpose: To evaluate and compare the diagnostic accuracy of fine needle aspiration (FNA) and core needle biopsy (CNB) of intrathoracic lesions using the same coaxial guide-needle under a C-arm Cone-Beam computed tomography system.

Materials And Methods: Two hundred and eighty-eight patients (181 male, 107 female; 65.8 ± 13.

Characteristics of Coronary Artery to Pulmonary Artery Fistula on Coronary Computed Tomography Angiography.

Objective: The aim of the study was to evaluate the characteristics of coronary artery-to-pulmonary artery fistula (CPAF) found by coronary computed tomography (CT) angiography.

Methods: Among 10,121 cases of coronary CT angiography performed for 7 years, we found 32 cases of CPAF. We retrospectively evaluated the demographics, clinical symptoms, and anatomical characteristics such as the origin, number of origins, course, opening site of the fistula, and the presence of aneurysmal changes (defined as dilatation 1.

Assessment of treatment success and short-term effectiveness using C-arm CT immediately after hepatic chemoembolization of HCC.

Background/aims: To investigate semiquantitative analyses based on amount and morphology of iodized oil uptake about non-enhanced C-arm cone-beam CT(C-arm CT) immediately following hepatic chemoembolization of HCC.

Methodology: We retrospectively reviewed 40 C-arm CT images taken immediately following chemoembolization in 29 consecutive patients who underwent hepatic chemoembolization for HCC lesions(n=97). Two radiologists scored iodized oil uptake in the index tumours from Grade 0(complete) to 4(invisible).

Metallic stent placement for the management of tracheal carina strictures and fistulas: technical and clinical outcomes.

Objective: The purpose of this article is to assess the technical and clinical outcomes of metallic stent placement in strictures and fistulas involving the carina.

Material And Methods: We performed a retrospective analysis of patients who had undergone stenting for disease involving the carina. We initially reviewed the symptoms, underlying causes, and the types of stent configuration used.

Pure intrasellar meningioma located under the pituitary gland: case report.

Most intrasellar meningiomas are located in the subdiaphragmatic and supraglandular region because they originate from the diaphragma sellae. Subglandular meningiomas located under the pituitary gland are extremely rare. Intrasellar meningiomas in the subdiaphragmatic and subglandular region probably originate from the dura in the sellar floor.

Dual-energy CT to detect recurrent HCC after TACE: initial experience of color-coded iodine CT imaging.

Objectives: To evaluate the feasibility of diagnosing recurrence of HCC after TACE color-coded iodine CT (CICT) based on arterial phase scans obtained by a dual-energy CT (DECT) scanner.

Methods: A CICT scan was acquired from an iodine map after applying material decomposition of the liver tissue and setting a threshold attenuation level for viable tumors. Two radiologists reviewed both conventional and CICT sets in 31 patients who had a history of TACE for HCC.

Development of standard digital images for pneumoconiosis.

We developed the standard digital images (SDIs) to be used in the classification and recognition of pneumoconiosis. From July 3, 2006 through August 31, 2007, 531 retired male workers exposed to inorganic dust were examined by digital (DR) and analog radiography (AR) on the same day, after being approved by our institutional review board and obtaining informed consent from all participants. All images were twice classified according to the International Labour Office (ILO) 2000 guidelines with reference to ILO standard analog radiographs (SARs) by four chest radiologists.

Left costomediastinal recess of the pleura, the potential pleural space anterior to the heart.

Objective: To investigate clinical implications of the left costomediastinal recess of the pleura.

Methods: The left anterior pleural anatomy was studied in 12 cadavers. Chest computed tomography (CT) scans of 68 healthy/near-healthy patients were reviewed for the recess.

Omental mesothelial cyst herniated to the thorax through the esophageal hiatus: a case report.

Both mesothelial cyst in the omentum and omental herniation through the esophageal hiatus without abdominal visceral involvement are rare. We report a case of omental mesothelial cyst herniated to the thorax through the esophageal hiatus.

Cavernous mesenteric lymphangioma (2006: 4b).

We describe a case of mesenteric lymphangioma, a very rare disease in adults that is considered to be a developmental abnormality. Since treatment involves complete excision of the mass to prevent recurrence, it is important to understand the exact extent of the tumor prior to surgery. Magnetic resonance imaging (MRI) is the most useful preoperative approach for diagnosis and surgical planning.

Pulmonary tuberculosis: another disease showing clusters of small nodules.

Objective: Pulmonary sarcoidosis was recently reported to show the "sarcoid galaxy" sign, indicating large pulmonary nodules composed of coalescent small nodules. The purpose of this study was to review cases of pulmonary tuberculosis showing CT features indistinguishable from the sarcoid galaxy sign.

Conclusion: Large nodules arising from the coalescence of small nodules may be seen in active tuberculosis and in sarcoidosis.

Effects of radiation therapy on the lung: radiologic appearances and differential diagnosis.

Radiation-induced lung disease (RILD) due to radiation therapy is common. Radiologic manifestations are usually confined to the lung tissue within the radiation port and are dependent on the interval after completion of treatment. In the acute phase, RILD typically manifests as ground-glass opacity or attenuation or as consolidation; in the late phase, it typically manifests as traction bronchiectasis, volume loss, and scarring.

Basal cell adenoma in the parotid gland: CT and MR findings.

Basal cell adenoma is a rare benign salivary gland epithelial tumor, usually involving the parotid gland. We report CT and MR findings of three cases with basal cell adenoma occurring in the parotid gland. The three cases presented here demonstrate a well-circumscribed tumor, which showed a cystic and solid, or the pure solid mass.

Telangiectatic pulmonary arteriovenous malformation.

Telangiectatic pulmonary arteriovenous malformation is defined as a pulmonary arteriovenous malformation involving every segmental artery of at least one lobe of the lung. The authors report a case of telangiectatic pulmonary arteriovenous malformation in the left lower lobe of the lung.

Heterotopic paragonimiasis in the omentum.

Paragonimus westermani is a lung fluke but may be found in organs other than the lungs. A case of omental paragonimiasis was found incidentally by plain radiography and computed tomography and showed multiple, irregularly shaped, conglomerated calcifications in the intraperitoneum. Many P.

Does contrast enhancement on CT suggest tumor response for chemotherapy in small cell carcinoma of the lung?

Purpose: The purpose of this article is to assess the correlation between contrast enhancement on CT and the tumor reduction ratio in small cell carcinoma of the lung after first-line chemotherapy.

Materials And Methods: Twenty-eight patients with small cell carcinoma of lung underwent preenhancement and postenhancement CT scans before and after first-line chemotherapy, followed by second-line chemotherapy in 7 patients who had relapsed. The authors retrospectively analyzed the correlation between the tumor reduction ratio and the CT numbers of contrast enhancement in each case by multiple regression analysis using SPSS.

Tuberculous pleural effusion: new pulmonary lesions during treatment.

Purpose: To evaluate patients who have a paradoxical response (development of new opacities) to treatment for tuberculous pleural effusion not related to acquired immunodeficiency syndrome.

Materials And Methods: In 16 patients, follow-up chest radiographs (n = 16) and initial (n = 2) and follow-up (n = 9) computed tomographic (CT) scans of the chest were retrospectively reviewed by two radiologists. Patient records (n = 16) and results of percutaneous needle aspiration and/or biopsy (n = 6) were reviewed by one radiologist.

Low-dose spiral CT: application to surface-rendered three-dimensional imaging of central airways.

Purpose: The purpose of this work was to assess the utility of low-dose spiral CT for three-dimensional imaging of the central airways.

Method: Spiral CT was performed in 15 patients using two tube currents (50 and 240 mA), producing 30 CT data sets. Surface-rendered virtual bronchoscopy (VB) and shaded surface display (SSD) images were assessed by three radiologists for image quality.

Sonography of the shoulder after arthrography (arthrosonography): preliminary results.

Purpose: The purpose of this study was to verify whether arthrosonography improves diagnostic accuracy in diseases of the shoulder and provides additional information for therapeutic planning, compared with conventional sonography.

Methods: We prospectively studied 113 consecutive patients with chronic shoulder pain. Sonography was performed before and after arthrography, with the radiologist blinded to the results of arthrography.