Osteoid osteoma of the distal phalanx of the finger: Case report and review of literature.

Osteoid osteoma (OO), a benign bone-forming tumor estimated to account for 3% of all primary bone tumors, rarely occurs in the finger. This case report presents an unusual instance of osteoid osteoma in the finger of a 15-year-old male patient. The lesion was discovered following an initial patient visit for left middle finger pain and swelling for one year without any identifiable injuries.

Studying the effect of donor kidney volume ratios to recipients' body surface area, body mass index, and total body weight on post-transplant graft function.

Objectives: The goal of this study was to retrospectively investigate the relationship between renal transplanted volume indexes (Total kidney volume (TKV)/Body surface area (BSA), Renal parenchymal volume (RPV)/BSA, Renal cortical volume (RCV)/BSA, RPV/Body mass index (BMI), RCV/BMI, RPV/Weight, RCV/Weight), and short- and long-term function of the graft.

Methods: One-hundred and twelve live donor-recipient pairs from 2017 to 2018, whose donors underwent preoperative renal computed tomography angiography and recipients survived during 12 months of follow-up, were included in this study.

Results: The crude and adjusted linear regressions for the effect of volume measurements by voxel and ellipsoid methods on the estimated glomerular filtration rate (eGFR) at different post-transplantation times demonstrated that the RPV/weight ratio had the most substantial crude effect on the eGFR 12 months and 4 years after renal transplant.

MEASUREMENT OF ENTRANCE SKIN DOSE AND ABSORBED DOSE TO DIFFERENT ORGANS IN DUAL-ENERGY X-RAY ABSORPTIOMETRY SCANS USING THERMOLUMINESCENCE DOSIMETRY.

Thermoluminescence dosimetry is considered as an effective method in estimating the absorbed doses to organs in different imaging modalities. The present study focuses on dosimetry in dual-energy X-ray absorptiometry scans, for patients, and phantoms in various imaging centres. The cubical LiF (Mg, Ti) thermoluminescence dosemeters were inserted inside the holes of the Rando phantom slabs, to measure the absorbed dose to different organs in the whole body and lumbar scans.

Measurement of Entrance Skin Dose and the Dose Received by Different Organs in Panoramic Dental Imaging.

Background: Thermoluminescence dosimetry(TLD) has been known as one of the most effective methods for dose estimation in diagnostic radiology. Orthopantomogram (OPG) imaging is used by many dentists, oral and maxillofacial surgeons as an effective tool for choosing an appropriate treatment plan.

Objective: This study aims to measure the entrance skin dose and the dose values received by different head and neck organs in OPG imaging using TLD dosimeters (TLD-100).

Persian manual therapy method for chronic low-back pain with lumbar radiculopathy; a randomized controlled trial.

Background: Manual therapy is a non-surgical approach for management of musculoskeletal symptoms. This study investigated safety and efficacy of a Persian manual therapy method (Fateh technique) for management of chronic low-back pain (LBP) and radiculopathy.

Methods: In this controlled trial, 52 eligible patients with chronic LBP and lumbar radiculopathy were randomly assigned into two intervention groups; one received a 16-min soft tissue manipulation for four weekly sessions and did two daily home active exercises.

A new approach to cardiac fat volume assessment and the correlation with coronary artery calcification.

Background: Coronary artery disease (CAD) is the foremost cause of death in the most developed societies. Plaque formation in epicardial coronary arteries and ensuing inflammation are a known pathophysiologic factor of CAD.

Objectives: We aimed to separately and simultaneously evaluate the correlation between pericardial fat pad volume and overall peri-coronary epicardial adipose tissue (EAT) thickness with coronary calcium score (CCS) to improve risk stratification of CAD.

VARIATION SIMULATION OF RADON CONCENTRATION IN THE TISSUES AND ORGANS OF THE BODY BY AN ELECTRICAL CIRCUIT.

In this study, a new model based on electric circuit theory has been introduced to simulate the dynamics of radioactive chemically inert gases in the human body. For this manner, it is assumed that inert gas is transported through the body to various organs via the blood stream. In this simulation, a voltage source is equivalent to gas generation in the atmosphere, the conductivity is equivalent to the cardiac output of the organ, the capacitor capacitance is equivalent to the volume of blood or tissue and voltage across a capacitor is equivalent to the gas concentration in air or blood or a tissue.

Processing the spike- like radon anomaly exhalation from the soil surface by electrical model.

A model based on electric circuit theory has been developed to simulate the radon concentration in an accumulator chamber from the soil surface. This model simulates the radon generation on earth as a voltage source, diffusion to the earth's surface as an electrical conductor, the convection flux of radon as an electrical current source and radon concentration in a chamber as a voltage across a capacitor. We use this model for processing the spike like an anomaly of radon.

Autoimmune hepatitis in children: experiences in a tertiary center.

Objective: Autoimmune hepatitis (AIH) is a necroinflammatory liver disease of unknown etiology that occurs in the children of all ages. The present study aimed to evaluate the clinical and paraclinical presentations, including pattern of autoantibodies, response to treatment, mortality, and liver transplantation outcome in the Iranian children with AIH.

Methods: The medical records of 87 children (56 girls and 31 boy) diagnosed with AIH between 2001 and 2010 were retrospectively analyzed for clinical and paraclinical profiles and also treatment outcome.

An electrical circuit model for simulation of indoor radon concentration.

In this study, a new model based on electric circuit theory was introduced to simulate the behaviour of indoor radon concentration. In this model, a voltage source simulates radon generation in walls, conductivity simulates migration through walls and voltage across a capacitor simulates radon concentration in a room. This simulation considers migration of radon through walls by diffusion mechanism in one-dimensional geometry.

Estimation of the radon concentration in soil related to the environmental parameters by a modified Adaline neural network.

A new method based on adaptive linear neuron (Adaline) is used to estimate the radon concentration in soil associated with the environmental parameters. Analysis of the data obtained from a site in Thailand indicates that our proposed method is able to differentiate temporal variation of radon concentration related to the environmental parameters from those caused by phenomena in the earth (e.g.

Layered neural networks based analysis of radon concentration and environmental parameters in earthquake prediction.

A layered neural network (LNN) has been employed to estimate the radon concentration in soil related to the environmental parameters. This technique can find any functional relationship between the radon concentration and the environmental parameters. Analysis of the data obtained from a site in Thailand indicates that this approach is able to differentiate time variation of radon concentration caused by environmental parameters from those arising by anomaly phenomena in the earth (e.