Impact of Radiation Dose on Treatment of Maxillary Cancer With Superselective Intra-arterial Cisplatin With Radiotherapy.

Background/aim: Maxillary sinus cancer is a relatively rare disease, and treatment is still evolving. We compared the efficacy of superselective intra-arterial infusion of high-dose cisplatin (CDDP) with concomitant radiotherapy (RADPLAT) using three-dimensional conformal radiotherapy (3DCRT) or intensity-modulated radiotherapy (IMRT) and analyzed the relationship between the total radiation dose and the treatment outcome in localized maxillary sinus cancer.

Patients And Methods: We reviewed the cases of 58 patients with localized maxillary sinus cancer treated with RADPLAT at our institution from March 2004 to November 2020.

Safety and feasibility of radiofrequency ablation using bipolar electrodes for aldosterone-producing adenoma: a multicentric prospective clinical study.

Evaluation of feasibility and safety of percutaneous radiofrequency ablation using bipolar radiofrequency devices in a prospective multicenter cohort of patients with benign aldosterone-producing adenoma. A total of five institutions participated. CT-guided percutaneous RFA was performed for patients diagnosed as APA.

Intra-Left Ventricular Hemodynamics Assessed with 4D Flow Magnetic Resonance Imaging in Patients with Left Ventricular Thrombus.

Left ventricular thrombus (LVT) has been identified to be crucial in patients with reduced ejection fraction (EF). Three-dimensional cine phase-contrast magnetic resonance imaging (4D flow MRI) can visualize the intra-LV vortex during diastole and quantify the maximum flow velocity (Vmax) at the apex. In this study, we investigated whether the change in the intra-LV vortex was associated with the presence of LVT in patients with cardiac disease.

Selective Angiography to Detect Anterior Spinal Artery Stenosis in Thoracic Ossification of the Posterior Longitudinal Ligament.

Study Design: Single-center prospective study.

Purpose: To investigate anterior spinal artery (ASA) status using preoperative selective angiography in patients undergoing surgery for thoracic ossification of the posterior longitudinal ligament (T-OPLL).

Overview Of Literature: Surgery for T-OPLL has a high risk of neurological complications, which might be associated with insufficient spinal cord blood flow.

Hemodynamic change in patients with hypertrophic obstructive cardiomyopathy before and after alcohol septal ablation using 4D flow magnetic resonance imaging: a retrospective observational study.

Background: The hemodynamics in the left ventricle (LV) and the ascending aorta (AAO) before and after alcohol septal ablation (ASA) in patients with hypertrophic obstructive cardiomyopathy (HOCM) is elucidated. Our objective was to evaluate the pattern changes in AAO and intra-LV flow assessed by four-dimensional (4D) flow magnetic resonance imaging (MRI) before and after ASA and to clarify the association between 4D flow MRI-derived hemodynamic characteristics and the peak pressure gradient (PPG) in patients with drug-refractory HOCM.

Methods: In this retrospective observational study, 11 patients with HOCM underwent 4D flow MRI before and a week after ASA.

Preoperative CT Findings for Predicting Acute Exacerbation of Interstitial Pneumonia After Lung Cancer Surgery: A Multicenter Case-Control Study.

Acute exacerbation (AE) is a life-threatening complication of inter-stitial pneumonia (IP). Thoracic surgery may trigger AE. The purpose of this study is to explore the role of preoperative CT findings in predicting postoperative AE in patients with IP and lung cancer.

Early changes of pulmonary arterial hemodynamics in patients with systemic sclerosis: flow pattern, WSS, and OSI analysis with 4D flow MRI.

Objectives: To study the pulmonary artery (PA) hemodynamics in patients with systemic sclerosis (SSc) using 4D flow MRI (4D-flow).

Methods: Twenty-three patients with SSc (M/F: 2/21, 57 ± 15 years, 3 manifest PA hypertension (PAH) by right heart catheterization) and 10 control subjects (M/F: 1/9, 55 ± 17 years) underwent 4D-flow for the in vivo measurement of 3D blood flow velocities in the PA. Data analysis included area-averaged flow quantification at the main PA, 3D wall shear stress (WSS), oscillatory shear index (OSI) calculation along the PA surface, and Reynolds number.

Abnormal Flow Dynamics Result in Low Wall Shear Stress and High Oscillatory Shear Index in Abdominal Aortic Dilatation: Initial in vivo Assessment with 4D-flow MRI.

Purpose: To characterize the non-laminar flow dynamics and resultant decreased wall shear stress (WSS) and high oscillatory shear index (OSI) of the infrarenal abdominal aortic dilatation, cardiac phase-resolved 3D phase-contrast MRI (4D-flow MRI) was performed.

Methods: The prospective single-arm study was approved by the Institutional Review Board and included 18 subjects (median 67.5 years) with the dilated infrarenal aorta (median diameter 35 mm).

Hepatic angiomyolipoma with early drainage veins into the hepatic and portal vein.

Hepatic angiomyolipoma (AML) is a rare stromal tumor composed of variable admixtures of thick-walled vessels, smooth muscles and adipose tissue. One of the specific radiological findings of hepatic AML is an early drainage vein noted via enhanced computed tomography (CT). We report a case of hepatic AML showing early drainage veins into both the hepatic and portal vein.

[Evaluation of CT-Guided Percutaneous Needle Biopsy for Diagnosis of Renal Tumor].

We performed computed tomographic (CT)-guided percutaneous needle biopsy for renal tumors that were difficult to diagnose or were inoperable malignant renal tumors. Nineteen patients who underwent CT-guided percutaneous needle biopsy between November 2007 and March 2015 at Hamamatsu University Hospital were included in this study. The median tumor diameter was 78 mm (40-140 mm).

Four-dimensional phase-contrast vastly undersampled isotropic projection reconstruction (4D PC-VIPR) MR evaluation of the renal arteries in transplant recipients: Preliminary results.

Purpose: To assess the performance of four-dimensional phase-contrast vastly undersampled isotropic projection reconstruction (4D PC-VIPR) at 3.0T in depicting intrarenal arteries compared with computed tomography angiography (CTA), and its correlation with arterial flowmetry in comparison with Doppler ultrasonography (DUS).

Materials And Methods: In our prospective single-arm study, subjects were 25 patients who underwent renal transplant-related surgery at our hospital between July 2011 and June 2015.

Feasibility of magnetic resonance elastography for the pancreas at 3T.

Purpose: 1) To assess the usefulness of an elastic belt bracing the upper abdomen for reducing the miscalculated areas of the pancreas on 3.0T magnetic resonance elastography (MRE); 2) to test whether MRE can detect difference of stiffness between normal pancreas and the focal pancreatic diseases.

Materials And Methods: Using an initial eight normal volunteers, miscalculated areas were compared between MRE with the elastic belt and without the belt on 3.

Detection of intrahepatic veno-venous shunts by three-dimensional venography using multidetector-row computed tomography during angiography.

Purpose: The hepatic vein (HV) can be removed during hepatectomy if there is an effective intrahepatic veno-venous shunt (vv-shunt). We evaluated the efficacy of vv-shunt detection by three-dimensional (3D) venography reconstructed from multidetector-row computed tomography (MDCT) during angiography.

Methods: 3D venography was reconstructed using computer software in 88 patients with intrahepatic tumors.

Cases presenting to orthopedists with manifestations of lung cancer on skeletal radiographs.

The value of cervical spine or shoulder radiography has been established for the detection of Pancoast tumors. However, for the detection of lung cancers other than Pancoast tumors, the value of these skeletal radiographies has not been assessed. The aim of our study was to determine how many patients first presented to orthopedists with manifestations of lung cancer on skeletal radiographs and to present several cases for illustration.

Anomalous arterial ramification in the right liver.

Purpose: The aim of this study was to investigate whether individual arterial and portal venous division during hepatectomy is always safe by examining the presence of the anomalous arterial ramification in the right liver.

Methods: The ramifications of the right hepatic artery (RHA) were investigated by three-dimensional (3D) reconstruction imaging using a computer software program in 87 patients undergoing computed tomography during angiography as a preoperative assessment of intrahepatic tumors.

Results: The anterior view showed that the RHA bifurcated into the anterior and posterior sector arteries at the hilum in 76 patients.

Usefulness of three-dimensional angiographic analysis of perigastric vessels before laparoscopic gastrectomy.

Background: Recognition of perigastric vessel anatomy is important to safely perform gastric surgery, especially in the case of laparoscopic gastrectomy. This study was designed to reevaluate the efficacy of preoperative three-dimensional (3D) angiography reconstructed from enhanced multidetector-row computed tomography (MDCT) data and to classify right gastric artery (RGA) branching patterns.

Methods: Perigastric vessel anatomy was preoperatively analyzed using MDCT-based 3D angiography reconstructed by computer software in patients undergoing laparotomic (n = 75) and laparoscopic (n = 25) gastrectomy.

Postoperative bile leakage managed by interventional intrabiliary ethanol ablation.

We report a case of postoperative bile leakage that was successfully managed by intrabiliary ethanol ablation. A 68-year-old man with peritoneal and liver metastases from a jejunal gastrointestinal stromal tumor (GIST), which were refractory to molecular-targeted agents, underwent extended left lobectomy and peritoneal tumor resection. Bile leakage from the drainage tube persisted at a constant volume of 100 ml per day.

Hemorrhagic radiation gastritis successfully treated with repeated intra-arterial steroid infusions.

Intra-arterial steroid infusion therapy has previously been shown to be effective for inflammatory bowel disease; however, few cases in which it has been used for the treatment of hemorrhagic radiation gastritis have been reported. We report the case of a 70-year-old Japanese man with hemorrhagic radiation gastritis induced by radiation therapy for para-aortic lymph node metastases of hepatocellular carcinoma. Two months after completing radiation therapy, acute persistent bleeding occurred in the gastric irradiation area.

Analysis of intrahepatic venovenous shunt by hepatic venography.

Background: The necessity of preserving hepatic venous drainage in hepatectomy and liver transplantation has recently been accepted; however, the hepatic vein (HV) can be removed when an effective intrahepatic venovenous shunt (VV shunt) exists.

Methods: Occlusion venography of the right HV (RHV) was performed in 51 patients to investigate the VV shunt characteristics.

Results: Twenty patients had a shunt between the RHV and large HVs whose root diameters were >3 mm, such as the superficial or inferior RHV, or the middle HV.