Dosimetric comparison between RapidArc and HyperArc in hippocampal-sparing whole-brain radiotherapy with a simultaneous integrated boost.

The HyperArc technique is known for generating high-quality radiosurgical treatment plans for intracranial lesions or hippocampal-sparing whole-brain radiotherapy (WBRT). However, there is no reported feasibility of using the HyperArc technique in hippocampal-sparing WBRT with a simultaneous integrated boost (SIB). This study aimed to compare dosimetric parameters of 2 commercially-available volumetric-modulated arc radiotherapy techniques, HyperArc and RapidArc, when using hippocampal-sparing WBRT with a SIB to treat brain metastases.

Tract seeding in indwelling pleural catheter placement for the drainage of malignant pleural effusions: Incidence and related clinical and imaging factors.

Background: The incidence of tract seeding after the placement of indwelling pleural catheter (IPC) for malignant pleural effusion drainage has been variable in the literature.

Research Question: To evaluate the incidence of IPC-related cancer tract seeding and find out related demographic, clinical or imaging factors to the tract seeding.

Study Design And Methods: This retrospective study included 124 consecutive patients seen between January 2011 and December 2021 who underwent IPC placement for malignant pleural effusion drainage.

Association between the extent of diffusion restriction on brain diffusion-weighted imaging and neurological outcomes after an out-of-hospital cardiac arrest.

Background: This study evaluated the association between the extent of diffusion restriction on brain diffusion-weighted imaging (DWI) and neurological outcomes in patients who underwent targeted temperature management (TTM) after an out-of-hospital cardiac arrest (OHCA).

Methods: Patients who underwent brain magnetic resonance imaging within 10 days of OHCA between 2012 and 2021 were analysed. The extent of diffusion restriction was described according to the modified DWI Alberta Stroke Program Early Computed Tomography Score (DWI-ASPECTS).

Patient-related risk factors for late rectal bleeding after hypofractionated radiotherapy for localized prostate cancer: a single-center retrospective study.

Background: Several studies have reported patient-related risk factors for late rectal bleeding following conventionally fractionated radiotherapy for prostate cancer. We investigated patient-related risk factors for late rectal bleeding after hypofractionated radiotherapy.

Methods: A total of 231 patients with local or locally advanced prostate cancer treated with hypofractionated radiotherapy (70 or 67.

Interfractional diaphragmatic position variation according to stomach volume change during respiratory-gated radiotherapy for hepatocellular carcinoma.

Purpose: We evaluated the correlation between stomach volume change and interfractional baseline shifts of the diaphragm in image-guided radiotherapy (IGRT) for hepatocellular carcinoma (HCC).

Materials And Methods: Twenty-four patients with HCC underwent ten fractions of IGRT, and a total of 240 cone beam computed tomography (CBCT) and on-board imager (OBI) kV image sets were acquired. These image sets were retrospectively analyzed.

Possible effects of agent orange and posttraumatic stress disorder on hyperglycemia in Korean veterans from the US-Vietnam war.

This study was conducted to examine whether Korean veterans from the US-Vietnam War who had a diagnosis of type II diabetes mellitus (T2DM) as well as past history of exposure to agent orange (AO) are vulnerable to hyperglycemia when receiving intra-articular corticosteroid injection (IACI) for pain relief.The current study included a total of 49 patients (n = 49) who received an injection of triamcinolone 20 or 40 mg to the shoulder under sonographic guidance or did that of dexamethasone 10 mg or triamcinolone 40 mg combined with dexamethasone 20 mg to the spine under fluoroscopic guidance. Their 7-day fasting blood glucose (FBG) levels were measured and then averaged, serving as baseline levels.

Video-assisted thoracoscopic surgical wedge resection using multiplanar computed tomography reconstruction-fluoroscopy after CT guided microcoil localization.

Background: When early-stage lung cancer is diagnosed, the recommended treatment is anatomical resection using video-assisted thoracoscopic surgery (VATS) or robotic lobectomy. However, nonanatomical resection, known as wedge resection (WR), which is performed to diagnose pulmonary nodules, can be problematic for clinicians performing VATS or robotic-assisted thoracic surgery (RATS). The purpose of this study was to evaluate the safety and effectiveness of VATS WR using multiplanar computed tomography reconstruction (CT MPR)-fluoroscopy after CT guided microcoil localization to achieve complete pulmonary nodule resection.

Four-Year Interim Results of the Safety of Augmentation Mammaplasty Using the Motiva Ergonomix™ Round SilkSurface: A Multicenter, Retrospective Study.

Background: The Motiva Ergonomix™ Round SilkSurface (Establishment Labs Holdings Inc., Alajuela, Costa Rica) is the fifth generation of a silicone gel-filled breast implant that is commercially available in Korea.

Objectives: In this study, we describe 4-year interim results of the safety of augmentation mammaplasty using the Motiva Ergonomix™ Round SilkSurface in Korean women.

Applicability of Anatomical Landmarks for Chest Compression Depth in Cardiopulmonary Resuscitation for Children.

We evaluated the applicability of the neck and sternal notch (SN) as anatomical landmarks for paediatric chest compression (CC) depth using chest computed tomography. The external anteroposterior diameter (EAPD) of the neck and chest at the SN level, mid-point between two landmarks (mid-landmark), and EAPD of the chest at the lower half of the sternum (EDLH) were measured. To estimate the depths of the landmarks from a virtual point at the same height as the position for CC, we calculated the differences between the EAPDs of the neck, SN, mid-landmark, and EDLH.

The position of the inferior vena cava-right atrium junction on simple radiography: implication for optimal veno-venous extracorporeal membrane oxygenation cannula tip position.

Background: Extracorporeal membrane oxygenation (ECMO) is increasingly used. For effective oxygenation, position of cannula tip is important. The objective of this study is to identify the position of the inferior vena cava-right atrium junction (IRJ) using the vertebral body unit (VBU) and carina.

Accuracy of objective parameters in acute epiglottitis diagnosis: A case-control study.

Lateral neck radiography is often used as a screening tool in emergency departments for suspected acute epiglottitis. The qualitative radiographic signs have been mainly used. The aim of this study was to evaluate the accuracy of objective radiographic parameters to aid diagnosis of acute epiglottitis.

Efficacy and safety of compound tri-metal stent placement for malignant perihilar biliary obstruction.

Background: Despite many attempts to improve the patency rate of biliary stents in patients with inoperable perihilar cholangiocarcinomas, the longevity of these stents has not been satisfactory. The purpose of the present study is to report technical outcomes and clinical efficacy of the placement of compound tri-metal stent in patients with malignant perihilar biliary obstruction.

Materials And Methods: Retrospective analysis was performed of the medical records of 26 consecutive patients with inoperable malignant perihilar biliary obstruction who underwent compound tri-metal stent placement through a percutaneous transhepatic biliary drainage tube from January 2012 to April 2017.

Comparison of hook wire versus coil localization for video-assisted thoracoscopic surgery.

Background: A hook wire has been most widely used for computed tomography (CT)-guided localization before video-assisted thoracoscopic surgery (VATS). However, microcoils have been suggested to replace wires. The purpose of this study was to compare the efficacy, VATS procedure time, and excised volume of specimens of CT-guided localization using a hook wire and microcoil.

Femoro-Supragenicular Popliteal Bypass with a Bridging Stent Graft in a Diffusely Diseased Distal Target Popliteal Artery: Alternative to Below-Knee Popliteal Polytetrafluoroethylene Bypass.

Background: Lesions in distal target arteries hinder surgical bypass procedures in patients with peripheral arterial occlusive disease.

Methods: Between April 2012 and October 2015, 16 patients (18 limbs) with lifestyle-limiting claudication (n=12) or chronic critical limb ischemia (n=6) underwent femoral-above-knee (AK) polytetrafluoroethylene (PTFE) bypass grafts with a bridging stent graft placement between the distal target popliteal artery and the PTFE graft. Ring-supported PTFE grafts were used in all patients with no available vein for graft material.

Inferior Mesentery Artery and Internal Iliac Artery Preservation with Covered Self-Expanding Stents during Endovascular Aneurysm Repair.

We report an endovascular aneurysm repair in a patient with isolated bilateral common iliac artery aneurysms, a prominent inferior mesentery artery (IMA), and bilateral proximal internal iliac artery (IIA) aneurysms using covered self-expanding stents to preserve the IMA and bilateral internal iliac arteries. A follow-up computed tomography angiography was obtained at 1 month. Pelvic circulation was well preserved without bowel ischemia.

The effects of uterine artery embolization on ovarian reserve.

Objective: To evaluate the effects of UAE for symptomatic uterine fibroids on ovarian reserve based on AMH.

Study Design: This was a retrospective study conducted between March 2011 and October 2014. All women underwent UAE.

Comparison of enhancement and image quality: different iodine concentrations for liver on 128-slice multidetector computed tomography in the same chronic liver disease patients.

Background/aims: The objective of this study was to compare the degree of hepatic enhancement and image quality using contrast media of different iodine concentrations with the same iodine dose.

Methods: From July 2011 to June 2013, 50 patients with chronic liver disease who underwent baseline and follow-up 128-slice multidetector computed tomography(MDCT) using contrast media with 350 mg I/mL (group A) and 400 mg I/mL (group B) iodine concentrations were included in this prospective study. The patients were randomly allocated to one of two protocols: 350 mg I/mL initially and then 400 mg I/mL; and 400 mg I/mL initially and then 350 mg I/mL.

Changes in Body Temperature in Incomplete Spinal Cord Injury by Digital Infrared Thermographic Imaging.

Objective: To investigate changes in the core temperature and body surface temperature in patients with incomplete spinal cord injuries (SCI). In incomplete SCI, the temperature change is difficult to see compared with complete spinal cord injuries. The goal of this study was to better understand thermal regulation in patients with incomplete SCI.

Uterine artery embolization using progressively larger calibrated gelatin sponge particles.

Purpose: To assess the effectiveness and safety of uterine artery embolization (UAE) using progressively larger calibrated gelatin sponge particles for symptomatic uterine fibroids.

Material And Methods: Thirty patients with symptomatic uterine fibroids underwent UAE. Calibrated gelatin sponge particles were used in all patients, beginning with 355-500 μm particles, progressively increasing to 500-710 μm and finally to 710-1000 μm particles.

Profiling of the bacteria responsible for pyogenic liver abscess by 16S rRNA gene pyrosequencing.

Pyogenic liver abscess (PLA) is a severe disease with considerable mortality and is often polymicrobial. Understanding the pathogens that cause PLA is the basis for PLA treatment. Here, we profiled the bacterial composition in PLA fluid by pyrosequencing the 16S ribosomal RNA (rRNA) gene based on next-generation sequencing (NGS) technology to identify etiological agents of PLA and to provide information of their 16S rRNA sequences for application to DNA-based techniques in the hospital.

Transarterial chemoembolization as first-line therapy for hepatocellular carcinomas infeasible for ultrasound-guided radiofrequency ablation: a retrospective cohort study of 116 patients.

Background: Ultrasound (US)-guided radiofrequency ablation (RFA) is frequently infeasible even for very early or early stage hepatocellular carcinoma (HCC) due to various reasons such as inconspicuous tumors or absence of a safe electrode path and the infeasibility rate is reportedly as high as 45%. In such cases, transarterial chemoembolization (TACE) is a commonly practiced alternative.

Purpose: To analyze long-term outcomes including tumor progression patterns and factors contributing to survival of patients who received TACE as the first line of therapy for very early or early stage HCC infeasible for US-guided RFA.

Ethanol embolotherapy of foot arteriovenous malformations.

Objective: To review initial clinical presentation, treatment course, and results of ethanol embolotherapy for foot arteriovenous malformations (AVMs) and to analyze prognostic factors for treatment results.

Methods: Twenty-nine patients (mean age, 31.3 years; range, 9-59) who underwent ethanol embolotherapy between 1999 and 2012 were retrospectively reviewed.

Non spherical polyvinyl alcohol versus gelatin sponge particles for uterine artery embolization for symptomatic fibroids.

Purpose: To compare clinical and magnetic resonance imaging (MRI) outcomes after uterine artery embolization (UAE) with non spherical polyvinyl alcohol (nPVA) versus gelatin sponge particles.

Material And Methods: During ten months, from Jan 2011 to Oct 2011, 60 patients underwent UAE in a standardized manner. nPVA (n = 30) or gelatin sponge particles (n = 30) were used in all patients.