The Effect of the Lumbar Vertebral Malpositioning on Bone Mineral Density Measurements of the Lumbar Spine by Dual-Energy X-Ray Absorptiometry

Izadyar, Sina; Golbarg, Shima; Takavar, Abbas; Zakariaee, Seyed Salman

doi:10.1016/j.jocd.2015.12.001

Cited by 16 publications

(10 citation statements)

References 6 publications

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“…In a study using the human cadastral model, it is reported that positioning the spine affects BMD values. In this study, as the lordosis and kyphosis of the cadaver increased, the BMD values decreased by 17.5% and 11.5%, respectively (14). The effect of leg positioning on BMD is addressed in a study included 1039 patients.…”

Section: Discussionmentioning

confidence: 93%

“…This indisputable value of DEXA depends on the suitability of many stages. The selection and calibration of devices used in this fit, the knowledge of technicians (acquisition), and the knowledge and skill of the clinicians who make the diagnosis and treatment decision (2,3,14). Messina et al (6), explored the types and prevalence of errors that occurred during DEXA evaluation and founded error rates as; data analysis, 79%; patient positioning, 12%; presence of artefacts, 7%; and demographic data, %2.…”

Section: Discussionmentioning

confidence: 99%

“…To our knowledge, no data are available on the effect of the patient's demographics on positioning errors. Patient positioning during DEXA examination is known to affect BMD results (3,13,14). However, some studies on patient positioning are concentrated in the field of DEXA total body composition with regional analysis (15,16).…”

Section: Discussionmentioning

confidence: 99%

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Is There an Effect of Patient’s Age, Weight, Height and Body Mass Index on Positioning Errors During Scan Acquisition of Dual X-ray Absorptiometry?

Tuna¹,

Kabayel²

2018

Tod

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Amaç: Dual enerji X-ışını absorbsiyometri tetkiki esnasında hastanın pozisyonlaması, kemik mineral yoğunluğu değerlendirmesinde önemlidir. Doğru pozisyonlama üzerine teknisyenin rolü önemli kabul edilirken, hastaya ait özelliklerin bu pozisyonlamaya etkisi yeterince açıklanmamaktadır. Bu araştırmadaki amacımız; postmenopozal kadınların yaş, boy, kilo ve vücut kitle indeksi gibi özelliklerinin pozisyonlama hatalarına etkileri olup olmadığını araştırmaktır. Gereç ve Yöntem: Post-menopozal kadınlara ait dual enerji X-ışını absorbsiyometri raporları ve dosyaları retrospektif olarak incelendi. Beden kitle indeksi değerlerine göre 3 grup oluşturuldu; normal, fazla kilolu ve obez. Her bir gruba 41 hasta dahil edildi. Yalnızca Hologic cihazına ait görüntüler değerlendirmeye katıldı. Dual enerji X-ışını absorbsiyometri çıktı raporlarındaki bel ve kalça bölgesi görüntüleri kullanılarak, pozisyonlama hatası olan hastalar tanımlandı. Vücut kitle indeksi grupları arasında pozisyonlama hata oranları arasındaki fark Pearson ki-kare testi ile belirlendi. Yaş, boy, ağırlık ve vücut kitle indeksinin pozisyonlama hataları üzerine etkisi basit doğrusal regresyon analizi ile incelendi. Bulgular: Normal, aşırı kilolu ve obez gruplar arasındaki pozisyonlama hataları dağılımı sırasıyla %35,3 (36), %29,4 (30) ve %35,3 (36) saptandı. Aynı gruplarda doğru pozisyonlanmış hastaların dağılımı sırasıyla; %23,8 (5), %52,4 (11) ve %23,8 (5) idi. Pozisyonlama hataları açısından gruplar arasında istatistiksel olarak anlamlı fark saptanmadı (Pearson ki-kare, p=0,127). Sonuç: Yaş, boy, ağırlık ve beden kütle indeksi gibi hastaya ait özellikler pozisyonlama hatalarını istatistiksel olarak anlamlı düzeyde etkilemez.Objective: Patient positioning during dual energy X-ray absorptiometry examination is important in assessing bone mineral density. While the role of the technician is considered important on correct positioning, the effect of the patient characteristics on positioning is not adequately explained. The aim of this study is investigate whether postmenopausal women's characteristics such as age, weight, height, and body mass index affect the positioning errors. Materials and Methods: Dual energy X-ray absorptiometry reports and files of postmenopausal women were reviewed retrospectively. According to the values of body mass index three groups were formed; normal, overweight and obese. Forty one patients were included in each group. Only the images of the Hologic dual energy X-ray absorptiometry device were participated to assessment. Patients with positioning error were identified using the lumbar and hip region images in the dual energy X-ray absorptiometry output reports. The difference in positioning error rates between the body mass index groups was determined by Pearson's chi-square test. The effect of age, height, weight, and body mass index of patients on positioning errors was examined by simple linear regression analysis. Results: Distribution of positioning errors between normal, overweight and obese groups were determined as 35.3% (3...

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Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Is There an Effect of Patient’s Age, Weight, Height and Body Mass Index on Positioning Errors During Scan Acquisition of Dual X-ray Absorptiometry?

Tuna¹,

Kabayel²

2018

Tod

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“…In addition, the bone turnover rate of cancellous bone is higher than that of cortical bone, and it is more sensitive to all kinds of metabolic stimuli. Moreover, its accumulation of bone mass will reach the peak earlier than cortical bone, so the measurement of lateral lumbar BMD has a higher sensitivity ( 14 ).…”

Section: Discussionmentioning

confidence: 99%

Relationship of melatonin level, oxidative stress and inflammatory status with osteoporosis in maintenance hemodialysis of chronic renal failure

2018

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The relationship of melatonin (MT) level, oxidative stress and inflammatory status with osteoporosis in the maintenance hemodialysis (MHD) of chronic renal failure was investigated. Ninety-four patients with chronic renal failure treated in Dezhou People's Hospital (Dezhoo, China) and receiving MHD for more than 3 months from May to April 2017 were selected and divided into the osteoporosis group (observation group, n=49) and the non-osteoporosis group (control group, n=45) based on whether osteoporosis was involved. The serum advanced oxidation protein products (AOPP), MT level and inflammatory factors [tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) and IL-1] in patients were detected via enzyme-linked immunosorbent assay (ELISA). Moreover, the malondialdehyde (MDA) level in serum was detected via thibabituric acid (TBA) assay and the spinal bone mineral density (BMD) was detected using the total BMD testing instrument, followed by correlation analysis. The MT level in observation group was significantly lower than that in control group, but the levels of AOPP and MDA were significantly higher than those in control group (P<0.05). The levels of inflammatory factors (TNF-α, IL-6 and IL-1) in observation group were obviously higher than those in the control group (P<0.05). Besides, the spinal BMD and T-value in observation group were significantly lower than those in the control group (P<0.05). Pearson's correlation analysis showed that AOPP, MDA, TNF-α, IL-6 and IL-1 levels were negatively correlated with BMD, but MT was positively correlated with BMD (P<0.05). Osteoporosis occurs easily in MHD patients; oxidative stress and inflammatory degree are negatively correlated with osteoporosis, but MT is positively correlated with osteoporosis.

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“…Scoliosis is a combination of a lateral curvature of the spinal column with a degree of axial rotation. There have been cadaveric [17] and phantom [18] studies describing conflicting effects of vertebral rotation on BMD. When studied on phantoms, the vertebral rotation results in a higher surface area, hence giving a falsely reduced areal BMD (Fig.…”

Section: Pitfall 6: Scoliosismentioning

confidence: 99%

Dual-energy X-ray absorptiometry bone densitometry and pitfalls in the assessment of osteoporosis: a primer for the practicing clinician

2020

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A guide to the clinician on the use of dual-energy x-ray absorptiometry bone densitometry for the management of osteoporosis and the importance of recognizing its pitfalls. Purpose Osteoporosis is a major risk factor for severe fractures in the aging population worldwide, posing a serious public health issue. Dual-energy X-ray absorptiometry (DXA) is and remains the main tool for screening of osteoporosis and monitoring of osteoporosis treatment through quantitative measurement of bone mineral density (BMD). Employing DXA to measure BMD is not without pitfalls. We set out to analyze and classify the potential pitfalls of DXA acquisitions and BMD measurements encountered in clinical practice in our institution. Methods Technical inaccuracies and discrepancies in BMD interpretation in the history of our department were analyzed and classified into different categories of pitfalls. Results We found that major pitfalls of BMD acquisition and interpretation using DXA can be classified into technical, patient, and interpretive factors. These are illustrated with case examples. Conclusion Good technical understanding of BMD measurements using DXA and recognition of potential pitfalls allow for greater technical and interpretive accuracy, which together hopefully increases the precision of osteoporosis management when practiced in accordance with established clinical guidelines.

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The Effect of the Lumbar Vertebral Malpositioning on Bone Mineral Density Measurements of the Lumbar Spine by Dual-Energy X-Ray Absorptiometry

Cited by 16 publications

References 6 publications

Is There an Effect of Patient’s Age, Weight, Height and Body Mass Index on Positioning Errors During Scan Acquisition of Dual X-ray Absorptiometry?

Is There an Effect of Patient’s Age, Weight, Height and Body Mass Index on Positioning Errors During Scan Acquisition of Dual X-ray Absorptiometry?

Relationship of melatonin level, oxidative stress and inflammatory status with osteoporosis in maintenance hemodialysis of chronic renal failure

Dual-energy X-ray absorptiometry bone densitometry and pitfalls in the assessment of osteoporosis: a primer for the practicing clinician

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