Accuracy Management of LiDAR Data Using GPS Ground Control Points

Nowadays, both faster and more accurate data acquisition studies are gradually gaining speed, different of traditional land surveying technics in order to obtain land data having high accuration and geometric resolution on mapping. In this study, it is aimed that, to test with RTK/GPS (Real Time Kinematic-Global Positioning System) data of LiDAR (Light Detection and Ranging) Technology, as Remote Sensing Technic, making detection at 1.064nm near infrared region of electromagnetic spectrum in terms of planimetric and vertical accuracy. İn this context, 2x2 km2 forested land, located in Borçka province of Artvin City in the Eastern Black Sea Region of Turkey was selected as study area. In this study, position and elevation differences were estimated between Ground Control Points (GCP) acquired by RTK- and the corresponding LiDAR points, and then, the relationship between the accuracies of these values was tested with search radius method as compared with. Vertical error (RMSEz) was found as 0.20m in normal distribution while it was 0.39 m, vertical accuracy (accuracyz) in 95% confidence interval, Planimetric error (RMSEr) was found as minimum 0.36m, maximum 1.01m, while it was minimum 0.62m, maximum 1.75m planimetric accuracy (accuracyr) in 95% confidence interval. As a result, it was seen that the horizontal error was as twice as the vertical error

Laryngoscopic Examination During the COVID-19 Pandemic: Turkish Voice Speech and Swallowing Disorders Society and Turkish Professional Voice Society Recommendations

COVID-19 is highly transmissible and spreads rapidly in the population. This increases the occupational risk for health care workers. In otolaryngology clinic practice, patients with upper respiratory tract infection symptoms are common. Also, routine head and neck examinations such as oral cavity examination, nasal/nasopharyngeal examination, or video laryngostroboscopic evaluation are highly risky because of the aerosol formation. To emphasize this issue, two leading otolaryngology organizations in Turkey; 'Voice Speech and Swallowing Disorders Society', and 'Professional Voice Society' gathered a task force. This task force aimed to prepare a consensus report that would provide practical recommendations of the safety measurements during routine clinical care of laryngology patients. To fulfill this, universal aim, on the 2nd and 9th of May 2020, two web-based meetings were conducted by 20 expert physicians. This eighteen items list was prepared as an output

The efficiacy of sternocleidomastoid muscle flap on frey's syndrome via a novel test: Galvanic skin response

The aim of this study was to evaluate the effects of sternocleidomastoid (SCM) muscle flap on preventing Frey's syndrome by using, Galvanic skin responses (GSR). Fourty-three patients who underwent superficial parotidectomy were randomly divided into two groups and their GSR were recorded. SCM muscle flap was applied over the surgical area only in one group. Six months after the surgery, GSRs were remeasured. In addition, the patients completed a questionnaire regarding their complaints about clinical Frey's syndrome. Four patients had symptoms of clinical Frey's syndrome. Postoperative GSR measurements revealed no significant difference between two sides in flap group (p = 0.426) but higher in without flap group (p = 0.003). The patients with clinical Frey syndrome had significantly higher GSR values than the remaining patients. The SCM muscle flap was an effective method in preventing Frey's syndrome. Moreover, GSR test was highly sensitive and specific for diagnosis

Evaluation of rheumatoid arthritis and connective tissue disease-related interstitial lung disease with pulmonary physiologic test, HRCT, and patient-based measures of dyspnea and functional disability

Objectives We aim to investigate the relationship between pulmonary function and imaging parameters with symptom-related patient-reported outcome measures (PROs). Method We included 65 patients of rheumatoid arthritis (RA) and connective tissue disease (CTD) with and without interstitial lung disease (ILD) into this cross-sectional study. We evaluated the relationship between FVC, DLco, and PROs and compared to HRCT findings. PROs included visual analogue scale for breathing, modified Borg scale, medical research council dyspnea scale, St. George's respiratory questionnaire (SGRQ), Leicester cough questionnaire, and Short Form 36 quality of life (SF-36 QoL). Results The mean age was 57.4 +/- 9.7 and 61.9% (39/65) of patients had an established ILD. In RA-ILD group, SGRQ score was higher (p < 0.001) and SF-36 physical functioning score was lower (p = 0.02) than CTD-ILD group. In RA group, there was a significant correlation between FVC and SF-36 role functioning/physical score (r = 0.724, p = 0.012). In CTD group, SF-36 general health score was correlated with both FVC (r = 0.441, p = 0.045) and DLco (r = 0.485, p = 0.035), and also SF-36 physical functioning score was correlated with FVC (r = 0.441, p = 0.040). PROs were found to be similar between ILD and non-ILD patients. SF-36 QoL total and SGRQ outcomes were worse in non-ILD group. Conclusions We concluded that PROs could be used to evaluate health-related quality of life (HRQoL) in RA- or CTD-related ILD. The physical health determinants of HRQoL are measurably worse in RA-ILD patients than in CTD patients. But, PROs may not be very helpful in differentiating patients with cough and/or shortness of breath due to ILD or non-ILD causes in RA/CTD

Etiological Factors in Umbilical Pilonidal Sinus

The objective of this study is to investigate factors leading to the development of umbilical pilonidal sinus (UPS). 31 patients with UPS treated at Harran University and Keçiören State Training Hospital between January 1997 and November 2007. 100 consecutive volunteer outpatients were administered questionnary. The questionnary included questions on age, sex, profession, body mass index (BMI), skin color, hirsute status, frequency of taking baths, personal history of pilonidal sinus (PS), familyal history of PS, and whether –they wear tight clothes and wheteher they use belt. The results obtained from two groups were compared. UPS is one of the PS group diseases and involves umbilical region. There was statistically significant difference between the patient and control groups in terms of age, profession, hirsute status, familial history of PS, wearing tight clothes and BMI. Improvement in these factors may contribute to the reduction of the prevalance of the disease